Professor I M Dharmadasa BSc, PhD, CPhys, CEng, FInstP, FWIF

Dharme is the Head of Electronic Materials & Sensors Group within the Materials and Engineering Research Institute. His research focuses on the development of next generation, low-cost and high-efficiency solar cells. He has nearly four decades of experience in both industry and academia and his work has secured six patents, based on novel process developments. He has also proposed two new scientific models concerning development of photovoltaic solar cells. During his career he has successfully supervised 28 PhDs, 14 years of postdoctoral research and examined 30 postgraduate candidates.

Earlier in his career, Dharme graduated from University of Peradeniya in Sri Lanka by completing two BSc Honours degrees covering Chemistry, Physics and Mathematics. He won the Dr. Hewavitharana memorial prize for best performance for his Physics Special Degree in 1975, and joined the academic staff of the Physics Department at University of Peradeniya. After winning an open commonwealth scholarship in 1977, he completed his PhD thesis in 1980 at University of Durham, before returning to his post in Sri Lanka. A deep research interest generated by his PhD thesis led his return to the UK in 1984, where he carried out active research at University College Cardiff and the British Petroleum Company, before joining SHU in 1990.

Dharme is actively involved in the promotion of clean energy for social development and reduction of poverty. He has designed, piloted and monitored "Solar Village" project, and this is now in the replication stage within and outside Sri Lanka. He is a Fellow of the World Innovation Foundation and the Institute of Physics, UK. He referees for over 14 Journals and one of the Editors of J. of Materials; Materials in Electronics. He currently serves as Assessor/panel member for The European Commission and the Commonwealth Scholarship Commission. In the past he has served as an Assessor/panel member for the EPSRC, DTI and the British Council for a period of 6-years each. Dharme is one of the founding members of the APSL-UK charity and has served as the Vice President for 5 years and the President for two years (2009-2011). Now he is serving as a senior adviser within the Ex-Co of APSL-UK charity organisation.

Dharme's duties within the University include Teaching, Research and Scholarly Activities. He teaches various courses within Electronic Engineering and carries out active research within MERI in electronic materials and electronic devices. His current focus is on solar energy conversion with new device structures and solar hydrogen production. He is currently developing next generation solar cells using graded bandgap device structures which he designed and experimentally tested in 2005. Dharme is also actively working to take solar energy technology from laboratory to the society through the "Solar Village" projects.

Further details at Research Gate: https://www.researchgate.net/profile/I_Dharmadasa/reputation
And at the Blogsite: https://dharmesblog.wordpress.com/

Awards:

• Won a Sri Lankan government scholarship on the merit of O/L results in 1966.
• Won the best student prize from high school (~2000 students) after A/L in 1969.
• Won Dr Hewavitharana memorial prize for the best performance at the Univ. in 1975.
• Won an open Commonwealth Scholarship from Association of Commonwealth
Universities for 3-year postgraduate research at Durham University in 1977.
• Won the media category of Eurosolar UK Prize Award for inspiring renewable energy applications in 2001.
• Inclusion in Marquis Who’s Who in Science and Eng. Directory-7th Ed., in 2002.
• Won the BRISLA Award for "Achievements in Science & Technology" in October 2016

Areas of Interest:

- Development of semiconductors using low-cost electroplating;

- Development of thin film solar cells for solar energy conversion

- Production of solar hydrogen

- Social development projects (Solar Villages) for sustainable development.

Department of Engineering and Mathematics

Business, Technology and Enterprise

Numerous PhD projects on materials & device development
Solar Villages for sustainable development.

Subject Area/Group: Electrical, Electronic & Control Engineering

Modules:

- PV Technology for “Sustainability, Energy & Environmental Management”, part of the MSc Advanced Engineering.
- Engineering Product Analysis & Design (EPAD), part of BEng Electronic & Electrical Engineering (Year 2).
- Optical Fibre Communication for “Railway Communication”, part of BEng Railway Engineering (Final year).
- PV Technology for Various Engineering Degree Courses as a Guest Lecturer. - Member of the Industrial Placement Preparation Team (academic)

• Materials and Engineering Research Institute

Dharme's research programme aims to develop next generation solar cells based on electrodeposited semiconductors and graded bandgap device architectures. The work involves thin film materials deposition (CdS, ZnS, ZnTe, ZnSe, GaSe, InSe, CdSe, CdTe, CdMnTe etc.), material characterisation (XRD, SEM, EDAX, PEC, XRF, Raman, Hall-Effect, Optical Absorption, Film Thickness measurements etc.), device fabrication & assessment (I-V, C-V, Responsivity measurements, monitoring stability, lifetime, uniformity & yield) and scaling up of thin film solar cells. In this work, PhD candidates will use a selected number of materials when the candidate joins the group according to the requirements of the time, electroplate materials, use a wide range of modern analytical techniques to characterise layers & optimise growth conditions, and work with an active research Team. The work will mainly concentrate on doping of materials to achieve high efficiencies for the II-VI semiconductors based solar cells. The current lab-scale efficiency achieved is 15.3%, and the efforts are to achieve highest possible values from these materials. The solar cell sizes will also been scaled up achieving high efficiencies, and their stability, reproducibility and yield will be monitored.
New candidates joining the group will also learn and experience Renewable Energy applications for sustainable development, in particular the "Solar Village" programme designed, piloted and monitored by Dharme. This project has now entered into the replication stage.

Current Collaborators:
CONN Centre -USA
ED Institute in Kazakhstan
Dept. of Chemistry, Kelaniya, Sri Lanka
CREST, Loughborough University
Oweri, Kano & Akure Universities in Nigeria
Univ. of Malaya, Malaysia
Jawaharlal Nehru Centre, Bangalore, India

Sponsors for this Research:
Sheffield Hallam University
EPSRC - UK
DTI/UK Industry
ACU/CSC (C/W)
British Council/DFID
Governments of Nigeria, Malaysia, Libya, Kurdishtan

Journal articles

Alam, A.E., Olusola, O.I., Loch, D.A.L., Shukla, K., Cranton, W.M., & Dharmadasa, I. (2020). Electrodeposition of ternary compounds for novel PV application and optimisation of electrodeposited CdMnTe thin-films. Scientific Reports, 10 (1), 21445. http://doi.org/10.1038/s41598-020-78066-y

Olusola, O.I., Madugu, M.L., Ojo, A.A., & Dharmadasa, I. (2020). Development of CdMnTe thin films using electroplating technique for opto-electronic device applications. Journal of Materials Science: Materials in Electronics. http://doi.org/10.1007/s10854-020-04717-5

Dharmadasa, I. (2020). Special Issue: “Advanced Thin Film Materials for Photovoltaic Applications”. Coatings, 10 (6), e562. http://doi.org/10.3390/coatings10060562

Dharmadasa, I., Alam, A.E., Ojo, A.A., & Echendu, O.K. (2019). Scientific complications and controversies noted in the field of CdS/CdTe thin film solar cells and the way forward for further development. Journal of Materials Science: Materials in Electronics, 30 (23), 20330-20344. http://doi.org/10.1007/s10854-019-02422-6

Dharmadasa, I., Rahaq, Y., & Alam, A.E. (2019). Perovskite solar cells: short lifetime and hysteresis behaviour of current–voltage characteristics. Journal of materials science: Materials in electronics, 30 (14), 12851-12859. http://doi.org/10.1007/s10854-019-01759-2

Ojo, A.A., & Dharmadasa, I. (2019). Factors affecting electroplated semiconductor material properties: The case study of deposition temperature on cadmium telluride. Coatings, 9 (6), e370. http://doi.org/10.3390/coatings9060370

Ojo, A., & Dharmadasa, I.M. (2019). Factors Affecting Electroplated Semiconductor Material Properties: The Case Study of Deposition Temperature on Cadmium Telluride. . http://doi.org/10.20944/preprints201904.0129.v1

Echendu, O.K., Werta, S.Z., Dejene, F.B., Ojo, A.A., & Dharmadasa, I. (2019). Ga doping of nanocrystalline CdS thin films by electrodeposition method for solar cell application: The influence of dopant precursor concentration. Journal of Materials Science: Materials in Electronics, 30 (5), 4977-4989. http://doi.org/10.1007/s10854-019-00794-3

Alam, A.E., Cranton, W., & Dharmadasa, I. (2019). Electrodeposition of CdS thin-films from cadmium acetate and ammonium thiosulphate precursors. Journal of Materials Science: Materials in Electronics. http://doi.org/10.1007/s10854-019-00750-1

Alam, A., Ojo, A., Jasinski, J., & Dharmadasa, I. (2018). Magnesium incorporation in n-CdTe to produce wide bandgap p-Type CdTe:Mg window layers. ChemEngineering, 2 (4), 59. http://doi.org/10.3390/chemengineering2040059

Echendu, O.K., Dejene, F.B., & Dharmadasa, I. (2018). An investigation of the influence of different transparent conducting oxide substrates/front contacts on the performance of CdS/CdTe thin-film solar cells. Journal of Materials Science: Materials in Electronics, 28 (24), 18865-18872. http://doi.org/10.1007/s10854-017-7838-x

Dharmadasa, I.M., Rahaq, Y., Ojo, A.A., & Alanazi, T.I. (2018). Perovskite solar cells: a deep analysis using current–voltage and capacitance–voltage techniques. Journal of materials science: Materials in electronics. http://doi.org/10.1007/s10854-018-0390-5

Ojo, A.A., & Dharmadasa, I. (2018). Effect of iodine incorporation on characteristic properties of cadmium telluride deposited in aqueous solution. Journal of Electronic Materials, 47 (11), 6909-6917. http://doi.org/10.1007/s11664-018-6616-8

Ojo, A.A., & Dharmadasa, I. (2018). Optimisation of pH of the CdCl2+Ga2(SO4)3 activation step of CdS/CdTe based thin-film solar cells. Solar Energy, 170, 398-405. http://doi.org/10.1016/j.solener.2018.05.083

Ojo, A.A., & Dharmadasa, I. (2018). Electroplating of semiconductor Materials for Applications in Large Area Electronics: A Review. Coatings, 8 (8), 262. http://doi.org/10.3390/coatings8080262

Atapattu, H.Y.R., De Silva, D.S.M., Pathiratne, K.A.S., & Dharmadasa, I. (2018). An investigation into the effect of rate of stirring of bath electrolyte on the properties of electrodeposited CdTe thin film semiconductors. Journal of Materials Science: Materials in Electronics, 29 (8), 6236-6244. http://doi.org/10.1007/s10854-018-8600-8

Ojo, A.A., Salim, H.I., & Dharmadasa, I. (2018). The influence of ZnS crystallinity on all-electroplated ZnS/CdS/CdTe graded bandgap device properties. Journal of Materials Science: Materials in Electronics, 1-18. http://doi.org/10.1007/s10854-018-9491-4

Abdul-Manaf, N.A., & Dharmadasa, I. (2017). Development of CdTe thin film solar cells for military applications. Defence S&T Technical Bulletin, 10 (2), 129-141. http://www.stride.gov.my/v1/techbulletin/2017_vol_10_num_2_se_dstc_draft.pdf

Echendu, O.K., Dejene, B.F., & Dharmadasa, I. (2017). The effects of anode material type on the optoelectronic properties of electroplated CdTe thin films and the implications for photovoltaic application. Journal of Physics and Chemistry of Solids, 114, 100-108. http://doi.org/10.1016/j.jpcs.2017.11.020

Echendu, O.K., Dejene, F.B., Dharmadasa, I., & Eze, F.C. (2017). Characteristics of nanocrystallite-CdS produced by low-cost electrochemical technique for thin film photovoltaic application: The influence of deposition voltage. International Journal of Photoenergy, 2017, 3989432. http://doi.org/10.1155/2017/3989432

Dharmadasa, I., & Ojo, A.A. (2017). Unravelling complex nature of CdS/CdTe based thin film solar cells. Journal of Materials Science: Materials in Electronics, 28 (22), 16598-16617. http://doi.org/10.1007/s10854-017-7615-x

Ojo, A.A., & Dharmadasa, I. (2017). Analysis of the Electronic Properties of All-electroplated ZnS, CdS and CdTe Graded Bandgap Photovoltaic Device Configuration. Solar Energy, 158, 721-727. http://doi.org/10.1016/j.solener.2017.10.042

Atapattu, H.Y.R., De Silva, D.S.M., Pathiratne, K.A.S., Olusola, O.I., & Dharmadasa, I. (2017). Necessity and relevance of precipitate free clear electrolytes for electrodeposition of CdS semiconductor materials with enhanced photovoltaic properties. Journal of Materials Science: Materials in Electronics, 28 (24), 18592-18602. http://doi.org/10.1007/s10854-017-7808-3

Ojo, A.A., Olusola, I.O., & Dharmadasa, I. (2017). Effect of the inclusion of Galium in normal Cadmium chloride treatment on electrical properties of CdS/CdTe solar cell. Materials Chemistry and Physics, 196, 229-236. http://doi.org/10.1016/j.matchemphys.2017.04.053

Ojo, A.A., & Dharmadasa, I. (2017). Effect of gallium doping on the characteristic properties of polycrystalline cadmium telluride thin film. Journal of Electronic Materials, 46 (8), 5127-5135. http://doi.org/10.1007/s11664-017-5519-4

Echendu, O.K., Dejene, F.B., & Dharmadasa, I. (2017). Fluorine-induced improvement of structural and optical properties of CdTe thin films for solar cell efficiency enhancement. Journal of Materials Science: Materials in Electronics, 28 (19), 14615-14630. http://doi.org/10.1007/s10854-017-7326-3

Ojo, A.A., & Dharmadasa, I. (2017). Analysis of electrodeposited CdTe thin films grown using cadmium chloride precursor for applications in solar cells. Journal of Materials Science: Materials in Electronics, 28 (19), 14110-14120. http://doi.org/10.1007/s10854-017-7264-0

Olusola, O.I., Madugu, M.L., & Dharmadasa, I. (2017). Investigating the electronic properties of multi-junction ZnS/CdS/CdTe graded bandgap solar cells. Materials chemistry and physics, 191, 145-150. http://doi.org/10.1016/j.matchemphys.2017.01.027

Ojo, A.A., & Dharmadasa, I. (2017). Optimisation of pH of cadmium chloride post-growth-treatment in processing CDS/CDTE based thin film solar cells. Journal of Materials Science: Materials in Electronics, 28 (10), 7231-7242. http://doi.org/10.1007/s10854-017-6404-x

Ojo, A.A., & Dharmadasa, I. (2017). Progress in development of graded bandgap thin film solar cells with electroplated materials. Journal of Materials Science: Materials in Electronics, 28 (9), 6359-6365. http://doi.org/10.1007/s10854-017-6366-z

Dharmadasa, I., Madugu, M.L., Olusola, O.I., Echendu, O.K., Fauzi, F., Diso, D., ... Sumanasekera, G. (2017). Electroplating of CdTe thin films from cadmium sulphate precursor and comparison of layers grown by 3-electrode and 2-electrode systems. Coatings, 7 (2), 17. http://doi.org/10.3390/coatings7020017

Olusola, O.I., Madugu, M.L., Ojo, A.A., & Dharmadasa, I.M. (2016). Investigating the effect of GaCl3 incorporation into the usual CdCl2 treatment on CdTe-based solar cell device structures. Current Applied Physics, 17 (2), 279-289. http://doi.org/10.1016/j.cap.2016.11.027

Dharmadasa, I.M., Chaure, N.B., Jadkar, S.R., Kshirsangar, A., & Pathan, H.M. (2016). Forward for special issue of the Solar Asia-2015 conference: selected papers. Journal of Materials Science: Materials in Electronics, 27 (12), 12279. http://doi.org/10.1007/s10854-016-6021-0

Ojo, A.A., Salim, H.I., Olusola, O.I., Madugu, M.L., & Dharmadasa, I. (2016). Effect of thickness: as case study of electrodeposited CdS in Cds/CdTe based photovoltaic devices. Journal of Materials Science: Materials in Electronics, 28 (4), 3254-3263. http://doi.org/10.1007/s10854-016-5916-0

Dharmadasa, I., Echendu, O.K., Fauzi, F., Abdul-Mafaf, N.A., Olusola, O.I., Salim, H.I., ... Ojo, A.A. (2016). Improvement of composition of CdTe thin films during heat treatment in the presence of CdCl2. Journal of Materials Science: Materials in Electronics, 28 (3), 2343-2352. http://doi.org/10.1007/s10854-016-5802-9

Olusola, O.I., Salim, H.I., & Dharmadasa, I. (2016). One-sided rectifying p-n junction diodes fabricated from n-CdS and p-ZnTe:Te semiconductors. Materials research express, 3 (9), 095904. http://doi.org/10.1088/2053-1591/3/9/095904

Ojo, A.A., & Dharmadasa, I. (2016). The Effect of Fluorine Doping on the Characteristic Behaviour of CdTe. Journal of Electronic Materials, 45 (11), 5728-5738. http://doi.org/10.1007/s11664-016-4786-9

Ojo, A.A., & Dharmadasa, I. (2016). 15.3% efficient graded bandgap solar cells fabricated using electroplated CdS and CdTe thin films. Solar Energy, 136, 10-14. http://doi.org/10.1016/j.solener.2016.06.067

Echendu, O.K., Okeoma, K.B., Oriaku, C.I., & Dharmadasa, I.M. (2016). Electrochemical deposition of CdTe semiconductor thin films for solar cell application using two-electrode and three-electrode configurations: a comparative study. Advances in Materials Science and Engineering. http://doi.org/10.1155/2016/3581725

Echend, O.K., Mbamara, U.S., Okeoma, K.B., Iroegbu, C., Madu, C.A., Ndukwe, I.C., & Dharmadasa, I.M. (2016). Effects of deposition time and post-deposition annealing on the physical and chemical properties of electrodeposited CdS thin films for solar cell application. Journal of Materials Science: Materials in Electronics, 27 (10), 10180-10191. http://doi.org/10.1007/s10854-016-5095-z

Ojo, A.A., & Dharmadasa, I. (2016). Investigation of electronic quality of electrodeposited cadmium sulphide layers from thiourea precursor for use in large area electronics. Materials Chemistry and Physics, 180, 14-28. http://doi.org/10.1016/j.matchemphys.2016.05.006

Salim, H.I., Olusola, O.I., Ojo, A.A., Urasov, K.A., Dergacheva, M.B., & Dharmadasa, I. (2016). Electrodeposition and characterisation of CdS thin films using thiourea precursor for application in solar cells. Journal of Materials Science: Materials in Electronics, 27 (7), 6786-6799. http://doi.org/10.1007/s10854-016-4629-8

Atapattu, H.Y.R., De Silva, D.S.M., Pathiratne, K.A.S., & Dharmadasa, I. (2016). Effect of stirring rate of electrolyte on properties of electrodeposited CdS layers. Journal of Materials Science: Materials in Electronics, 27 (5), 5415-5421. http://doi.org/10.1007/s10854-016-4443-3

Dharmadasa, I., Echendu, O.K., Fauzi, F., Salim, H.I., Abdul-Manaf, N.A., Jasinski, J.B., ... Sumanasekera, G. (2016). Study of Fermi level movement during CdCl2 treatment of CdTe thin films using Ultra-violet Photoemission Spectroscopy. Journal of Materials Science: Materials in Electronics, 27 (5), 5039-5046. http://doi.org/10.1007/s10854-016-4391-y

Madugu, M.L., Olusola, O.I.-.O., Echendu, O.K., Kadem, B., & Dharmadasa, I. (2016). Intrinsic Doping in Electrodeposited ZnS Thin Films for Application in Large-Area Optoelectronic Devices. Journal of Electronic Materials, 45 (6), 2710-2717. http://doi.org/10.1007/s11664-015-4310-7

Echendu, O., & Dharmadasa, I. (2015). Graded-Bandgap solar cells using all-electrodeposited ZnS, CdS and CdTe thin-films. Energies, 8 (5), 4416-4435. http://doi.org/10.3390/en8054416

Olusola, O.I., Madugu, M.L., Abdul-Manaf, N.A., & Dharmadasa, I. (2015). Growth and characterisation of n- and p-type ZnTe thin films for applications in electronic devices. Current Applied Physics, 16 (2), 120-130. http://doi.org/10.1016/j.cap.2015.11.008

Dharmadasa, I., Echundu, O.K., Fauzi, F., Abdul-Manaf, N.A., Salim, H.I., Druffel, T., ... Lavey, B. (2015). Effects of CdCl2 treatment on deep levels in CdTe and their implications on thin film solar cells;A comprehensive photoluminescence study. Journal of Materials Science: Materials in Electronics, 26 (7), 4571-4583. http://doi.org/10.1007/s10854-015-3090-4

Pandit, B., Dharmadasa, R., Dharmadasa, I., Druffel, T., & Liu, J. (2015). Ultrafast charge carrier relaxation and charge transfer processes in CdS/CdTe thin films. Physical Chemistry Chemical Physics, 17 (26), 16760-16766. http://doi.org/10.1039/c5cp01652e

Echendu, O.K., & Dharmadasa, I. (2015). The effect on CdS/CdTe solar cell conversion efficiency of the presence of fluorine in the usual CdCl2 treatment of CdTe. Materials chemistry and physics, 157, 39-44. http://doi.org/10.1016/j.matchemphys.2015.03.010

Salim, H.I., Patel, V., Abbas, A., Walls, J.M., & Dharmadasa, I. (2015). Electrodeposition of CdTe thin films using nitrate precursor for applications in solar cells. Journal of Materials Science: Materials in Electronics, 26 (5), 3119-3128. http://doi.org/10.1007/s10854-015-2805-x

Abdul-Manaf, N.A., Weerasinghe, A.R., Echendu, O.K., & Dharmadasa, I.M. (2015). Electro-plating and characterisation of cadmium sulphide thin films using ammonium thiosulphate as the sulphur source. Journal of Materials Science: Materials in Electronics, 26 (4), 2418-2429. http://doi.org/10.1007/s10854-015-2700-5

Olusola, O.I., Echendu, O.K., & Dharmadasa, I. (2015). Development of CdSe thin films for application in electronic devices. Journal of Materials Science: Materials in Electronics, 26 (2), 1066-1076. http://doi.org/10.1007/s10854-014-2506-x

Dharmadasa, I.M., Ojo, A.A., Salim, H.I., & Dharmadasa, R. (2015). Next generation solar cells based on graded bandgap device structures utilising rod-type nano-materials. Energies, 8 (6), 5440-5458. http://doi.org/10.3390/en8065440

Abdul-Manaf, N.A., Salim, H.I., Madugu, M.L., Olusola, O.I., & Dharmadasa, I.M. (2015). Electro-plating and characterisation of CdTe thin films using CdCl2 as the cadmium source. Energies, 8 (10), 10883-10903. http://doi.org/10.3390/en81010883

Echendu, O.K., & Dharmadasa, I. (2014). Effects of thickness and annealing on optoelectronic properties of electrodeposited ZnS thin films for photonic device applications. Journal of Electronic Materials, 43 (3), 791-801. http://doi.org/10.1007/s11664-013-2943-y

Abdul-Manaf, N.A., Echendu, O.K., Fauzi, F., Bowen, L., & Dharmadasa, I. (2014). Development of Polyaniline using electrochemical technique for plugging pinholes in Cadmium Sulfide/Cadmium Telluride Solar Cells. Journal of Electronic Materials, 43 (11), 4003-4010. http://doi.org/10.1007/s11664-014-3361-5

Echendu, O.K., Fauzi, F., Weerasinghe, A.R., & Dharmadasa, I. (2014). High short-circuit current density CdTe solar cells using all-electrodeposited semiconductors. Thin Solid Films, 556, 529-534. http://doi.org/10.1016/j.tsf.2014.01.071

Dharmadasa, R., Lavery, B., Dharmadasa, I., & Druffel, T. (2014). Intense pulsed light treatment of cadmium telluride nanoparticle-based thin films. ACS Applied Materials & Interfaces, 6 (7), 5034-5040. http://doi.org/10.1021/am500124t

Dharmadasa, R., Dharmadasa, I., & Druffel, T. (2014). Intense pulsed light sintering of electrodeposited CdS thin films. Advanced Engineering Materials, 16 (11), 1351-1361. http://doi.org/10.1002/adem.201400008

Dharmadasa, I., Bingham, P., Echendu, O., Salim, H., Druffel, T., Dharmadasa, R., ... Abbas, A. (2014). Fabrication of CdS/CdTe-Based thin film solar cells using an electrochemical technique. Coatings, 4 (3), 380-415. http://doi.org/10.3390/coatings4030380

Dharmadasa, I. (2014). Review of the CdCl2 treatment used in CdS/CdTe thin film solar cell development and new evidence towards improved understanding. Coatings, 4 (2), 282-307. http://doi.org/10.3390/coatings4020282

Madugu, M.L., Bowen, L., Echendu, O.K., & Dharmadasa, I. (2014). Preparation of indium selenide thin film by electrochemical technique. Journal of Materials Science: Materials in Electronics, 25 (9), 3977-3983. http://doi.org/10.1007/s10854-014-2116-7

Echendu, O.K., Weerasinghe, A.R., Diso, D.G., Fauzi, F., & Dharmadasa, I. (2013). Characterization of n-Type and p-Type ZnS thin layers grown by an electrochemical method. Journal of Electronic Materials, 42 (4), 692-700. http://doi.org/10.1007/s11664-012-2393-y

Fauzi, F., Diso, D.G., Echendu, O.K., Patel, V., Purandare, Y., Burton, R., & Dharmadasa, I. (2013). Development of ZnTe layers using an electrochemical technique for applications in thin-film solar cells. Semiconductor Science and Technology, 28 (4), 045005. http://doi.org/10.1088/0268-1242/28/4/045005

Dharmadasa, I., Kalyanaratne, N.D.P.S.R., & Dharmadasa, R. (2013). Effective harvesting of photons for improvement of solar energy conversion by graded bandgap multilayer solar cells. Journal of the National Science Foundation of Sri Lanka, 41 (2), 73-80. http://doi.org/10.4038/jnsfsr.v41i2.5702

Diso, D.G., Hotoro, M.A.Y., Bichi, T.S., & Dharmadasa, I. (2013). Structural and optical properties of electrodeposited CdS thin film. Journal of Engineering and Applied Sciences, 5 (1), 67-76. http://www.cenresinpub.org/publications.html

Elsherif, O.S., Vernon-Parry, K., Dharmadasa, I., Evans-Freeman, J.H., Airey, R.J., Kappers, M.J., & Humphreys, C.J. (2012). Characterization of defects in Mg doped GaN epitaxial layers using conductance measurements. Thin Solid Films, 520 (7), 3064-3070. http://doi.org/10.1016/j.tsf.2011.11.020

Ito, S., Dharmadasa, I., Tolan, G.J., Roberts, J.S., Hill, G., Miura, H., ... Grätzel, M. (2011). High-voltage (1.8V) tandem solar cell system using a GaAs/AlXGa(1−X)As graded solar cell and dye-sensitised solar cells with organic dyes having different absorption spectra. Solar Energy, 85 (6), 1220-1225. http://doi.org/10.1016/j.solener.2011.02.024

Muftah, G.E.A., Samantilleke, A.P., Warren, P.D., Heavens, S.N., & Dharmadasa, I. (2010). Electrochemical deposition of CuInTe2 layers for applications in thin film solar cells. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 21 (4), 373-379. http://doi.org/10.1007/s10854-009-9926-z

Diso, D.G., Muftah, G.E.A., Patel, V., & Dharmadasa, I.M. (2010). Growth of CdS layers to develop all-electrodeposited CdS/CdTe thin-film solar cells. Journal of The Electrochemical Society (JES), 157 (6), H647. http://doi.org/10.1149/1.3364800

Dharmadasa, I. (2009). Fermi level pinning and effects on CuInGaSe2-based thin-film solar cells. Semiconductor Science and Technology, 24 (5). http://doi.org/10.1088/0268-1242/24/5/055016

Wellings, J.S., Samantilleke, A.P., Heavens, S.N., Warren, P., & Dharmadasa, I. (2009). Electrodeposition of CuInSe2 from ethylene glycol at 150 degrees C. Solar Energy Materials & Solar Cells, 93 (9), 1518-1523. http://doi.org/10.1016/j.solmat.2009.03.031

Islam, A.B.M.O., Chaure, N.B., Wellings, J., Tolan, G., & Dharmadasa, I. (2009). Development of electrodeposited ZnTe layers as window materials in ZnTe/CdTe/CdHgTe multi-layer solar cells. Materials Characterization, 60 (2), 160-163. http://doi.org/10.1016/j.matchar.2008.07.009

Dharmadasa, I.M., Chaure, N.B., Samantilleke, A.P., & Hassan, A.K. (2008). Multi Fermi level pinning at metal/Cu(InGa)(SeS)(2) interfaces. Solar energy materials and solar cells, 92 (8), 923-928. http://doi.org/10.1016/j.solmat.2008.02.025

Wellings, J.S., Samantilleke, A.P., Warren, P., Heavens, S.N., & Dharmadasa, I. (2008). Comparison of electrodeposited and sputtered intrinsic and aluminium-doped zinc oxide thin films. Semiconductor Science and Technology, 23 (12). http://doi.org/10.1088/0268-1242/23/12/125003

Dharmadasa, I., Tolan, G.J., & Cazaux, M. (2008). Effects of defects in semiconductors on reproducibility and performance of thin-film photovoltaic solar cells. Semiconductor Science and Technology, 23 (3). http://doi.org/10.1088/0268-1242/23/3/035023

Wellings, J.S., Chaure, N.B., Heavens, S.N., & Dharmadasa, I. (2008). Growth and characterisation of electrodeposited ZnO thin films. Thin Solid Films, 516 (12), 3893-3898. http://doi.org/10.1016/j.tsf.2007.07.156

Dharmadasa, I., Chaure, N.B., Tolan, G.J., & Samantilleke, A.P. (2007). Development of p(+), p, i, n, and n(+)-type CuInGaSe2 layers for applications in graded bandgap multilayer thin-film solar cells. Journal of The Electrochemical Society (JES), 154 (6), H466-H471. http://doi.org/10.1149/1.2718401

Dharmadasa, I., & Haigh, J. (2006). Strengths and advantages of electrodeposition as a semiconductor growth technique for applications in macroelectronic devices. Journal of The Electrochemical Society (JES), 153 (1), G47-G52. http://doi.org/10.1149/1.2128120

Dharmadasa, I., Bunning, J.D., Samantilleke, A.P., & Shen, T. (2005). Effects of multi-defects at metal/semiconductor interfaces on electrical properties and their influence on stability and lifetime of thin film solar cells. Solar Energy Materials & Solar Cells, 86 (3), 373-384. http://doi.org/10.1016/j.solmat.2004.08.009

Dharmadasa, I. (2005). Third generation multi-layer tandem solar cells for achieving high conversion efficiencies. Solar Energy Materials & Solar Cells, 85 (2), 293-300. http://doi.org/10.1016/j.solmat.2004.08.008

Dharmadasa, I., Roberts, J.S., & Hill, G. (2005). Third generation multi-layer graded band gap solar cells for achieving high conversion efficiencies - II: Experimental results. Solar Energy Materials & Solar Cells, 88 (4), 413-422. http://doi.org/10.1016/j.solmat.2005.05.008

Chaure, N.B., Samantilleke, A.P., Burton, R.P., Young, J., & Dharmadasa, I. (2005). Electrodeposition of p(+), p, i, n and n(+)-type copper indium gallium diselenide for development of multilayer thin film solar cells. Thin Solid Films, 472 (1-2), 212-216. http://doi.org/10.1016/j.tsf.2004.07.051

Delsol, T., Samantilleke, A.P., Chaure, N.B., Gardiner, P.H., Simmonds, M., & Dharmadasa, I. (2004). Experimental study of graded bandgap Cu(InGa)(SeS)(2) thin films grown on glass/molybdenum substrates by selenization and sulphidation. Solar energy materials and solar cells, 82 (4), 587-599. http://doi.org/10.1016/j.solmat.2004.02.018

Chaure, N.B., Young, J., Samantilleke, A.P., & Dharmadasa, I. (2004). Electrodeposition of p-i-n type CuInSe2 multilayers for photovoltaic applications. Solar energy materials and solar cells, 81 (1), 125-133.

Premaratne, K., Akuranthilaka, S.N., Dharmadasa, I., & Samantilleka, A.P. (2004). Electrodeposition using non-aqueous solutions at 170 degrees C and characterisation of US, CdSxSe(1-x) and CdSe compounds for use in graded band gap solar cells. Renewable Energy, 29 (4), 549-557. http://doi.org/10.1016/j.renene.2003.08.002

Chaure, N.B., Bordas, S., Samantilleke, A.P., Chaure, S.N., Haigh, J., & Dharmadasa, I. (2003). Investigation of electronic quality of chemical bath deposited cadmium sulphide layers used in thin film photovoltaic solar cells. Thin Solid Films, 437 (1-2), 10-17. http://doi.org/10.1016/S0040-6090(03)00671-0

Chaure, N.B., Samantilleke, A.P., & Dharmadasa, I. (2003). The effects of inclusion of iodine in CdTe thin films on material properties and solar cell performance. Solar Energy Materials & Solar Cells, 77 (3), 303-317. http://doi.org/10.1016/S0927-0248(02)00351-3

Dharmadasa, I., Chaure, N.B., Young, J., Samantilleke, A.P., & Delsol, T. (2003). Reply to Comment on 'New ways of developing glass conducting glass CdS/CdTe metal thin-film solar cells based on a new model', by Dharmadasa et al 2002 Semicond. Sci. Technol 17 1238-48. Semiconductor Science and Technology, 18 (8), 813-816. http://doi.org/10.1088/0268-1242/18/8/402

Delsol, T., Simmonds, M.C., & Dharmadasa, I. (2003). Chemical etching of Cu(In,Ga)Se-2 layers for fabrication of electronic devices. Solar energy materials and solar cells, 77 (4), 331-339. http://doi.org/10.1016/S0927-0248(02)00352-5

Emery, K., Dharmadasa, I.M., Chaure, N.B., Young, J., Samantilleke, A.P., & Delsol, T. (2003). Comment on 'New ways of developing glass/conducting glass/CdS/CdTe/metal thin-film solar cells based on a new model' by Dharmadasa et al 2002 Semicond. Sci. Technol. 17 1238-48 (multiple letters). Semiconductor Science and Technology, 18 (8), 812-816. http://doi.org/10.1088/0268-1242/18/8/401

Fernando, C.A.N., Priyankara, W.T.C., & Dharmadasa, I. (2002). Photocurrent enhancement of interlocked LB film dye layers in a p-CuSCN sensitised photoelectrochemical cell. Renewable Energy, 25 (1), 69-79. http://doi.org/10.1016/S0960-1481(00)00205-6

Fernando, C.A.N., de Silva, P.H.C., Wethasinha, S.K., Dharmadasa, I., Delsol, T., & Simmonds, M.C. (2002). Investigation of n-type Cu2O layers prepared by a low cost chemical method for use in photovoltaic thin film solar cells. Renewable Energy, 26 (4), 521-529. http://doi.org/10.1016/S0960-1481(01)00157-4

Dharmadasa, I., Samantilleke, A.P., Chaure, N.B., & Young, J. (2002). New ways of developing glass/conducting glass/CdS/CdTe/metal thin-film solar cells based on a new model. Semiconductor Science and Technology, 17 (12), 1238-1248. http://doi.org/10.1088/0268-1242/17/12/306

De Silva, K.T.L., Priyantha, W.A.A., Jayanetti, J.K.D.S., Chithrani, B.D., Siripala, W., Blake, K., & Dharmadasa, I. (2001). Electrodeposition and characterisation of CuInSe2 for applications in thin film solar cells. Thin Solid Films, 382 (1-2), 158-163. http://doi.org/10.1016/S0040-6090(00)01185-8

Samantilleke, A.P., Dharmadasa, I., Prior, K.A., Choy, K.L., Mei, J., Bacewicz, R., & Wolska, A. (2001). Development of opto-electronic devices using electrochemically grown thin ZnSe layers. Journal of Materials Science: Materials in Electronics, 12 (11), 661-666. http://doi.org/10.1023/A:1012854101987

Chahboun, A., Coratger, R., Ajustron, F., Beauvillain, J., Dharmadasa, I., & Samantilleke, A.P. (2000). Ballistic electron emission microscopy of Au/n-ZnSe contacts and local density of states spectroscopy. Journal of Applied Physics, 87 (5), 2422-2426. http://doi.org/10.1063/1.372195

Wijesundara, R.P., Perera, L.D.R.D., Jayasuriya, K.D., Siripala, W., De Silva, K.T.L., Samantilleke, A.P., & Dharmadasa, I. (2000). Sulphidation of electrodeposited cuprous oxide thin films for photovoltaic applications. Solar Energy Materials and Solar Cells, 61 (3), 277-286. http://doi.org/10.1016/S0927-0248(99)00115-4

Dharmadasa, I., Samantilleke, A.P., Young, J., Boyle, M.H., Bacewicz, R., & Wolska, A. (1999). Electrodeposited p-type and n-type ZnSe layers for light emitting devices and multi-layer tandem solar cells. Journal of Materials Science: Materials in Electronics, 10 (5-6), 441-445. http://doi.org/10.1023/A:1008922229057

Dharmadasa, I.M., Samantilleke, A.P., Young, J., Boyle, M.H., Bacewicz, R., & Wolska, A. (1999). Electrodeposited p-type and n-type ZnSe layers for light emitting devices and multi-layer tandem solar cells. Journal of Materials Science: Materials in Electronics, 10 (5), 441-445. http://doi.org/10.1023/a:1008922229057

Dharmadasa, I. (1998). Recent developments and progress on electrical contacts to CdTe, CdS and ZnSe with special reference to barrier contacts to CdTe. Progress in Crystal Growth and Characterization of Materials, 36 (4), 249-290. http://doi.org/10.1016/S0960-8974(98)00010-2

Samantilleke, A.P., Boyle, M.H., Young, J., & Dharmadasa, I. (1998). Growth of n-type and p-type ZnSe thin films using an electrochemical technique for applications in large area optoelectronic devices. Journal of Materials Science: Materials in Electronics, 9 (3), 231-235. http://doi.org/10.1023/A:1008886410204

Samantilleke, A.P., Boyle, M.H., Young, J., & Dharmadasa, I. (1998). Electrodeposition of n-type and p-type ZnSe thin films for applications in large area optoelectronic devices. Journal of Materials Science: Materials in Electronics, 9 (4), 289-290. http://doi.org/10.1023/A:1008876722944

Dharmadasa, I., Blomfield, C.J., Scott, C.G., Coratger, R., Ajustron, F., & Beauvillain, J. (1998). Metal/n-CdTe interfaces: A study of electrical contacts by deep level transient spectroscopy and ballistic electron emission microscopy. Solid-State Electronics, 42 (4), 595-604. http://doi.org/10.1016/S0038-1101(97)00296-7

Ileperuma, O.A., Vithana, C., Premaratne, K., Akuranthilaka, S.N., McGregor, S.M., & Dharmadasa, I. (1998). Comparison of CdS thin films prepared by different techniques for applications in solar cells as window materials. Journal of Materials Science: Materials in Electronics, 9 (5), 367-372. http://doi.org/10.1023/A:1008988227005

Coratger, R., Girardin, C., Beauvillain, J., Dharmadasa, I., Samanthilake, A.P., Frost, J.E.F., ... Cavenett, B.C. (1997). Schottky barrier formation at metal/n-ZnSe interfaces and characterization of Au/n-ZnSe by ballistic electron emission microscopy. Journal of Applied Physics, 81 (12), 7870-7875. http://doi.org/10.1063/1.365395

Cammack, D.S., McGregor, S.M., McChesney, J.J., Dharmadasa, I., Clark, S.A., Dunstan, P.R., ... Eliott, M. (1997). Photoemission study of the formation of intimate In-InGaAs(100) contacts at room and cryogenic temperatures. Journal of Applied Physics, 81 (12), 7876-7879. http://doi.org/10.1063/1.365377

Wardlaw, R.S., & Dharmadasa, I. (1996). Effects of multi-level Fermi pinning and aggregate surface area on Schottky barrier heights at metal/semiconductor interfaces. International journal of electronics, 81 (1), 59-65. http://doi.org/10.1080/002072196136931

Siripala, W., Perera, L.D.R.D., DeSilva, K.T.L., Jayanetti, J.K.D.S., & Dharmadasa, I. (1996). Study of annealing effects of cuprous oxide grown by electrodeposition technique. Solar Energy Materials and Solar Cells, 44 (3), 251-260. http://doi.org/10.1016/0927-0248(96)00043-8

Coratger, R., Ajustron, F., Beauvillain, J., Dharmadasa, I., Blomfield, C.J., Prior, K.A., ... Cavenett, B.C. (1995). Au/n-ZnSe contacts studied with use of ballistic-electron-emission microscopy. Physical Review B (PRB), 51 (4), 2357-2362. http://doi.org/10.1103/PhysRevB.51.2357

Dharmadasa, I., Ives, M., Brooks, J.S., France, G.H., & Brown, S.J. (1995). Application of glow discharge optical emission spectroscopy to study semiconductors and semiconductor devices. Semiconductor Science and Technology, 10 (3), 369-372. http://doi.org/10.1088/0268-1242/10/3/023

Dharmadasa, I., Blomfield, C.J., Gregory, G.E., & Young, J. (1994). Influence of chemical etching on metal contacts to II-VI compounds: CdTe and ZnSe. International journal of electronics, 76 (5), 961-967. http://doi.org/10.1080/00207219408926005

Dharmadasa, I., Blomfield, C.J., Gregory, G.E., & Haigh, J. (1994). Aging effects and Auger depth profiling studies of Sb/n-CdTe contacts. Semiconductor Science and Technology, 9 (2), 185-187. http://doi.org/10.1088/0268-1242/9/2/009

Dharmadasa, I., Blomfield, C.J., Gregory, G.E., Cavenett, B.C., Prior, K.A., & Simpson, J. (1994). Microscopic and macroscopic investigation of electrical contacts to n-ZnSe. Surface and Interface Analysis, 21 (10), 718-723. http://doi.org/10.1002/sia.740211007

Sobiesierski, Z., Dharmadasa, I.M., & Williams, R.H. (1990). Photoluminescence as a probe of semiconductor surfaces: CdTe and CdS. Journal of Crystal Growth, 101 (1-4), 599-602. http://doi.org/10.1016/0022-0248(90)91044-Q

Williams, R.H., Forsyth, N., Dharmadasa, I.M., & Sobiesierski, Z. (1990). Metal contacts to II-VI semiconductors: CdS and CdTe. Applied Surface Science, 41-42 (C), 189-194. http://doi.org/10.1016/0169-4332(89)90055-X

Forsyth, N.M., Dharmadasa, I.M., Sobiesierski, Z., & Williams, R.H. (1989). Schottky barriers to CdS and their importance in Schottky barrier theories. Semiconductor Science and Technology, 4 (1), 57-59. http://doi.org/10.1088/0268-1242/4/1/011

Dharmadasa, I.M., Thornton, J.M., & Williams, R.H. (1989). Effects of surface treatments on Schottky barrier formation at metal/n-type CdTe contacts. Applied Physics Letters, 54 (2), 137-139. http://doi.org/10.1063/1.101208

Wilks, S.P., Zahn, D., Dharmadasa, I.M., & Williams, R.H. (1989). Sb/InP: Control of Schottky barriers by adsorbed layers. Journal of Physics: Condensed Matter, 1. http://doi.org/10.1088/0953-8984/1/SB/037

Sobiesierski, Z., Dharmadasa, I.M., & Williams, R.H. (1988). Correlation of photoluminescence measurements with the composition and electronic properties of chemically etched CdTe surfaces. Applied Physics Letters, 53 (26), 2623-2625. http://doi.org/10.1063/1.100178

Dharmadasa, I.M., Patterson, M.H., & Williams, R.H. (1988). Chemical reactions and Schottky barrier formation at Cr/n-CdTe interfaces. Semiconductor Science and Technology, 3 (9), 926-930. http://doi.org/10.1088/0268-1242/3/9/016

Forsyth, N., Dharmadasa, I., Sobiesierski, Z., & Williams, R. (1988). An investigation of metal contacts to II-VI compounds: CdTe and CdS. Vacuum, 38 (4-5), 369-371. http://doi.org/10.1016/0042-207X(88)90081-4

Dharmadasa, I.M., McLean, A.B., Patterson, M.H., & Williams, R.H. (1987). Schottky barriers and interface reactions on chemically etched n-CdTe single crystals. Semiconductor Science and Technology, 2 (7), 404-412. http://doi.org/10.1088/0268-1242/2/7/003

McLean, A.B., Dharmadasa, I.M., & Williams, R.H. (1986). Schottky-barrier height determination in the presence of interfacial disorder. Semiconductor Science and Technology, 1 (2), 137-142. http://doi.org/10.1088/0268-1242/1/2/008

Dharmadasa, I.M., Herrenden-Harker, W.G., & Williams, R.H. (1986). Metals on cadmium telluride: Schottky barriers and interface reactions. Applied Physics Letters, 48 (26), 1802-1804. http://doi.org/10.1063/1.96792

Williams, R.H., Dharmadasa, I.M., Patterson, M.H., Maani, C., & Forsyth, N.M. (1986). Metal contacts to semiconductors, indium phosphide and cadmium telluride. Surface Science, 168 (1-3), 323-335. http://doi.org/10.1016/0039-6028(86)90862-9

Dharmadasa, I.M., Roberts, G.G., & Petty, M.C. (1982). Electrical properties of Au/n-CdTe Schottky diodes. Journal of Physics D: Applied Physics, 15 (5), 901-910. http://doi.org/10.1088/0022-3727/15/5/018

Roberts, G.G., Petty, M.C., & Dharmadasa, I.M. (1981). PHOTOVOLTAIC PROPERTIES OF CADMIUM-TELLURIDE/LANGMUIR-FILM SOLAR CELLS. IEE Proceedings I: Solid State and Electron Devices, 128 (6), 197-201. http://doi.org/10.1049/ip-i-1.1981.0049

Petty, M.C., Dharmadasa, I.M., & Roberts, G.G. (1980). Electrical properties of CdTe:Cl. Journal of Physics D: Applied Physics, 13 (10), 1899-1909. http://doi.org/10.1088/0022-3727/13/10/019

Dharmadasa, I.M., Roberts, G.G., & Petty, M.C. (1980). Cadmium telluride/langmuir film photovoltaic structures. Electronics Letters, 16 (6), 201-202. http://doi.org/10.1049/el:19800144

Conference papers

Elsherif, O.S., Muftah, G.E.A., Abubaker, O., & Dharmadasa, I.M. (2016). Structural, optical and electrical properties of SnO2:F thin films deposited by spray pyrolysis for application in thin film solar cells. Journal of Materials Science: Materials in Electronics, 27 (12), 12280-12286. http://doi.org/10.1007/s10854-016-5206-x

Diso, D.G., Fauzi, F., Echendu, O.K., Olusola, O.I., & Dharmadasa, I. (2016). Optimisation of CdTe electrodeposition voltage for development of CdS/CdTe solar cells. Journal of Materials Science: Materials in Electronics, 27 (12), 12464-12472. http://doi.org/10.1007/s10854-016-4844-3

Ojo, A.A., & Dharmadasa, I.M. (2016). Electrodeposition of fluorine-doped cadmium telluride for application in photovoltaic device fabrication. Materials Research Innovations, 19 (7), 470-476. http://doi.org/10.1080/14328917.2015.1109215

Olusola, O.I.-.O., Madugu, M.L., & Dharmadasa, I. (2015). Growth of n- and p-type ZnTe semiconductors by intrinsic doping. Materials Research Innovations, 19 (7), 497-502. http://doi.org/10.1080/14328917.2015.1105570

Dharmadasa, R., Lavery, B.W., Dharmadasa, I., & Druffel, T. (2015). Processing of CdTe thin films by intense pulsed light in the presence of CdCl2. Journal of Coatings Technology and Research, 12 (5), 835-842. http://doi.org/10.1007/s11998-015-9688-x

Dharmadasa, R., Echendu, O.K., Dharmadasa, I., & Druffel, T. (2013). Rapid thermal processing in CdS/CdTe thin film solar cells by intense pulsed light sintering. ECS Transactions, 58 (11), 67-75. http://doi.org/10.1149/05811.0067ecst

Echendu, O.K., Fauzi, F., Bowen, L., & Dharmadasa, I. (2013). n-CdTe-based multilayer graded bandgap solar cell using all-electrodeposited semiconductors. In Proceedings of the 9th Photovoltaic Science, Applications and Technology Conference, (pp. 147-150). Solar Energy Society

Yates, H.M., Sheel, D.W., Dharmadasa, I., Echendu, O.K., & Fauzi, F. (2013). The effects of TCO properties on CdS/CdTe PV solar cells. In Proceedings of the 9th Photovoltaic Science, Applications and Technology Conference, (pp. 211-214). Solar Energy Society

Abdul Manaf, N.A., Echendu, O.K., Fauzi, F., Bowen, L., & Dharmadasa, I. (2013). Electrodeposition and characterization of Polyaniline to develop organic/inorganic hybrid solar cells based on Cadmium Telluride. In Mine, A., Jager-Waldau, A., & Helm, P. (Eds.) 28th European Photovoltaic Solar Energy Conference and Exhibition, (pp. 2327-2332). Munich, Germany: WIP: http://doi.org/10.4229/28thEUPVSEC2013-3BV.5.53

Echendu, O.K., Fauzi, F., Bowen, L., & Dharmadasa, I. (2013). All electrodeposited, multilayer graded bandgap solar cells using II-VI eemiconductors. In Mine, A., Jager-Waldau, A., & Helm, P. (Eds.) 28th European Photovoltaic Solar Energy Converence and Exhibition, (pp. 2409-2413). Munich, Germany: WIP: http://www.photovoltaic-conference.com/

Diso, D.G., & Dharmadasa, I. (2013). Growth and optimisation of CdTe deposition voltage. In Solar Asia 2013 : 2nd International Conference on Solar Energy Materials, Solar Cells and Solar Energy Applications, Kuala Lumpur, Malaysia, 22 August 2013 - 24 August 2013.

Dharmadasa, I., Echendu, O.K., Abdul Manaf, N.A., Dergacheva, M.B., Mit, K.A., & Urazov, K.A. (2013). Next generation solar cells using graded bandgap structures utilising nano- and micro-rod type semiconductors. In Solar Asia 2013 : 2nd International Conference on Solar Energy Materials, Solar Cells and Solar Energy Applications, Kuala Lumpur, Malaysia, 22 August 2013 - 24 August 2013. http://conferencealerts.com/show-event?id=118112

Dharmadasa, I., Diso, D.G., Echendu, O.K., Salim, H.I., Abdul Manaf, N.A., Dergacheva, M.B., ... Urazof, K.A. (2013). Thin film photovoltaic solar cells with nano- and micro-rod type II-VI semiconducting materials grown by electroplating. In 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), Tampa, Florida, United States, 16 June 2013 - 21 June 2013. http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=20112

Dharmadasa, R., Echendu, O.K., Dharmadasa, I., & Druffel, T. (2013). Intense pulsed light sintering of thin film semiconductors. In Annual Nanotechnology Symposium, University of Louisville, Kentucky, United States, 16 August 2013 - 17 August 2013. http://kynanonet.org/kynanosymposium

Dharmadasa, I., Diso, D.G., Echendu, O.K., Salim, H.I., Abdul Manaf, N.A., Dergacheva, M.B., ... Urazof, K.A. (2013). Thin film photovoltaic solar cells with nano- and micro-rod type II-VI semiconducting materials grown by electroplating. In 9th Photovoltaic Science Applications and Technology Conference (PVSAT-9), Loughborough, UK. Solar Energy Society: http://www.uk-ises.org/

Echendu, O.K., Fauzi, F., Bowen, L., & Dharmadasa, I. (2013). All electrodeposited, multilayer graded bandgap solar cells using II-VI semiconductors. In EU-PVSEC Proceedings : 28th European Photovoltaic Solar Energy Conference and Exhibition, (pp. 2409-2413). EU-PVSEC: http://doi.org/10.4229/28thEUPVSEC2013-3BV.6.37

Dharmadasa, I., Echendu, O.K., & Dharmadasa, R. (2012). Distortions observed in current-voltage characteristics of photovoltaic solar cells. In 27th European Photovoltaic Solar Energy Conference and Exhibition, (pp. 2308-2313). EU-PVSEC: http://doi.org/10.4229/27thEUPVSEC2012-3CV.1.30

Dharmadasa, I., Elsherif, O., & Tolan, G.J. (2011). Solar Cells Active in Complete Darkness. Journal of Physics: Conference Series, 286, 012041. http://doi.org/10.1088/1742-6596/286/1/012041

Diso, D.G., Fauzi, F., Echendu, O.K., Weerasinghe, A.R., & Dharmadasa, I. (2011). Electrodeposition and characterisation of ZnTe layers for application in CdTe based multi-layer graded bandgap solar cells. Journal of Physics: Conference Series, 286, 012040. http://doi.org/10.1088/1742-6596/286/1/012040

Dharmadasa, I., & Gunaratne, L. (2011). Solar villages for social development and poverty reduction. In Solar Asia 2011 : International Conference on Solar Energy Materials, Solar Cells and Solar Energy Applications, Kandy, Sri Lanka, 28 July 2011 - 30 July 2011. http://www.ifs.ac.lk/pdf/Solar%20Asia%202011%20conference%20proceedings.pdf

Dharmadasa, I. (2011). Advances in CdTe, CuInGaSe2 and GaAs/AlGaAs thin film PV solar cells. In Solar Asia 2011 : International Conference on Solar Energy Materials, Solar Cells and Solar Energy Applications, Kandy, Sri Lanka, 28 July 2011 - 30 July 2011. http://www.ifs.ac.lk/pdf/Solar%20Asia%202011%20conference%20proceedings.pdf

Weerasinghe, A., Echendu, O.K., Diso, D.J., & Dharmadasa, I. (2011). Study of electrodeposited ZnS thin films grown with ZnSO4 and (NH4)2S2O3 precursors for use in solar cells. In Solar Asia 2011 : International Conference on Solar Energy Materials, Solar Cells and Solar Energy Applications, Kandy, Sri Lanka, 28 July 2011 - 30 July 2011. http://www.ifs.ac.lk/pdf/Solar%20Asia%202011%20conference%20proceedings.pdf

Samantilleke, A.P., Cerqueira, M.F., Heavens, S., Warren, P., Dharmadasa, I., Muftah, G.E.A., ... Marí, B. (2011). Characterisation of chemical bath deposited CdS thin films on different substrates using electrolyte contacts. Thin Solid Films, 519 (21), 7583-7586. http://doi.org/10.1016/j.tsf.2010.12.218

Dharmadasa, I., Elsherif, O., & Tolan, G.J. (2010). Experimental evidence for impurity photovoltaic effect in GaAs/AlGaAs based graded bandgap multi-layer solar cells. In Proceedings of the 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, (pp. 583-586). EU PVSEC: http://doi.org/10.4229/25thEUPVSEC2010-1DV.3.11

Dharmadasa, I. (2009). Latest developments in CdTe, CuInGaSe2 and GaAs/AlGaAs thin film PV solar cells. Current Applied Physics, 9 (2), E2-E6. http://doi.org/10.1016/j.cap.2008.12.021

Dharmadasa, I., Burton, R.P., & Simmonds, M. (2006). Electrodeposition of CuInSe2 layers using a two-electrode system for applications in multi-layer graded bandgap solar cells. Solar Energy Materials & Solar Cells, 90 (15), 2191-2200. http://doi.org/10.1016/j.solmat.2006.02.028

Dharmadasa, I.M., Samantilleke, A.P., Young, J., & Chaure, N.B. (2003). New ways of developing glass/CG/CdS/CdTe/metal thin film solar cells based on a new model - Paper 2. Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion, A, 547-550.

Dharmadasa, I., Blomfield, C.J., Coratger, R., Ajustron, E., Beauvillain, J., Simpson, J., ... Cavenett, B.C. (1996). Microscopic and macroscopic investigation of electrical contacts to n type and p type ZnSe. Materials Science and Technology, 12 (1), 86-89. http://www.ingentaconnect.com/content/maney/mst/1996/00000012/00000001/art00014

McGregor, S.M., Dharmadasa, I., Wadsworth, I., & Care, C.M. (1996). Growth of CdS and CdTe by electrochemical technique for utilisation in thin film solar cells. Optical Materials, 6 (1-2), 75-81. http://doi.org/10.1016/0925-3467(96)00014-6

Blomfield, C.J., Dharmadasa, I., Prior, K.A., & Cavenett, B.C. (1996). Discrete Schottky barriers observed for the metal/n-ZnSe(100) system. Journal of Crystal Growth, 159 (1-4), 727-731. http://doi.org/10.1016/0022-0248(95)00648-6

McChesney, J.J., Haigh, J., Dharmadasa, I., & Mowthorpe, D.J. (1996). Electrochemical growth of GaSb and InSb for applications in infra-red detectors and optical communication systems. Optical Materials, 6 (1-2), 63-67. http://doi.org/10.1016/0925-3467(96)00026-2

Sobiesierski, Z., Forsyth, N.M., Dharmadasa, I.M., & Williams, R.H. (1990). Use of x-ray photoelectron spectroscopy to investigate the deposition of metal overlayers onto the clean cleaved CdS surface. Surface Science, 231 (1-2), 98-102. http://doi.org/10.1016/0039-6028(90)90697-7

Book chapters

Dharmadasa, I., & Echendu, O.K. (2014). Electrodeposition of electronic materials for applications in macroelectronic- and nanotechnology-based devices. In Kreysa, G., Ota, K.-.I., & Savinell, R.F. (Eds.) Encyclopedia of Applied Electrochemistry. (pp. 680-691). Springer: http://doi.org/10.1007/978-1-4419-6996-5_37

Books

Ojo, A.A., Cranton, W., & Dharmadasa, I. (2019). Next generation multilayer graded bandgap solar cells. Cham: Springer. https://rd.springer.com/book/10.1007/978-3-319-96667-0#about

Dharmadasa, I. (2018). Advances in thin film solar cells. 2nd edition. Pan Stanford Publishing. http://www.panstanford.com/books/9789814800129.html

Dharmadasa, I. (2012). Advances in thin-film solar cells. Singapore: Pan Stanford. http://www.panstanford.com/books/9789814316071.html

Theses / Dissertations

Kadem, B.Y. (2017). P3HT:PCBM-based organic solar cells : Optimisation of active layer nanostructure and interface properties. (Doctoral thesis). Supervised by Hassan, A., & Dharmadasa, I.

Ojo, A.A. (2017). Engineering of electroplated materials for multilayer next generation graded bandgap solar cells. (Doctoral thesis). Supervised by Dharmadasa, I. http://doi.org/10.7190/shu-thesis-00018

Madugu, M.L. (2016). Processing of semiconductors and thin film solar cells using electroplating. (Doctoral thesis). Supervised by Dharmadasa, I., & Nabok, A.

Olusola, O.I.-.O. (2016). Optoelectronic devices based on graded bandgap structures utiliising electroplated semiconductors. (Doctoral thesis). Supervised by Dharmadasa, I.

Salim, H.I. (2016). Multilayer solar cells based on CdTe grown from nitrate precursor. (Doctoral thesis). Supervised by Dharmadasa, I., & Nabok, A.

Olusola, I.-.O.O. (2016). Optoelectronic devices based on graded bandgap structures utilising electroplated semiconductors. (Doctoral thesis). Supervised by Dharmadasa, I.

Fauzi, F.B. (2015). Research and development of CdS/CdTe solar cells incorporating ZnTe layers. (Doctoral thesis). Supervised by Dharmadasa, I., & Hassan, A.

Manaf, N.A.B.A. (2015). Organic/inorganic hybrid solar cells based on electroplated CdTe. (Doctoral thesis). Supervised by Dharmadasa, I., & Hassan, A.

Echendu, O.K. (2014). Thin film solar cells using all-electrodeposited ZnS, CdS and CdTe materials. (Doctoral thesis). Supervised by Dharmadasa, I., & Young, A.E.

Weerasinghe, A.R. (2013). Solar cells based on electrodeposited thin films of ZnS, CdS, CdSSe and CdTe. (Doctoral thesis). Supervised by Dharmadasa, I.

Elsherif, O.S. (2012). Electrical characterisation of defects in wide bandgap semiconductors. (Doctoral thesis). Supervised by Evans-Freeman, J., Dharmadasa, I., & Vernon-Parry, K.

Diso, D.G. (2011). Research and development of CdTe based thin film PV solar cells. (Doctoral thesis). Supervised by Dharmadasa, I., & Vernon-Parry, K.

Wellings, J.S. (2009). Electrodeposition of semiconductorsfor applications in thin film solar cells. (Doctoral thesis). Supervised by Dharmadasa, I.

Wellings, J.S. (2009). Electrodeposition of semiconductors for applications in thin film solar cells. (Doctoral thesis). Supervised by Dharmadasa, I., Hassan, A., & Heavens, S.

Wellings, J.S. (2009). Electrodeposition of semiconductors for applications in thin film solar cells. (Doctoral thesis). Supervised by Dharmadasa, I., Hassan, A., & Heavens, S.

Tolan, G.J. (2008). Electro-chemical development of CuInGaSe2-based photovoltaic solar cells. (Doctoral thesis). Supervised by Dharmadasa, I., & Evans-Freeman, J.

Media

Dharmadasa, I. (n.d.). Solar villages for sustainable development. [Screencast]. http://www.screencast-o-matic.com/watch/cIejDwVbnn

Presentations

Dharmadasa, I. (2016). Solar Energy Strategy for Sri Lanka: The Solar Village Solution for Sustainable Development and Poverty Reduction. Presented at: Science and technology for society forum, Sri Lanka, 2016

Dharmadasa, R., Echendu, O.K., Dharmadasa, I., & Druffel, T. (2013). Rapid thermal processing in CdS/CdTe thin film solar cells by intense pulsed light sintering. Presented at: 224th ECS Meeting, San Francisco, California, U.S, 2013

Posters

Salim, H.I., Abdul Manaf, A., & Dharmadasa, I. (2014). Electrodeposition of CdTe thin film solar cells using cadmium nitrate precursor. Presented at: PVSAT-10 : 10th Photovoltaic Science, Applications and Technology, Loughborough, 2014

Fauzi, F., Abdul Manaf, N.A., Echendu, O.K., & Dharmadasa, I. (2013). Electrochemical deposition of organic and inorganic pin-hole plugging layers for CdS/CdTe solar cells. Presented at: Solar Asia 2013 : 2nd International Conference on Solar Energy Materials, Solar Cells and Solar Energy Applications, Kuala Lumpur, Malaysia, 2013

Abdul Manaf, N.A., Echendu, O.K., Salim, H.I., Bowen, L., & Dharmadasa, I. (2013). Electrodeposition and characterization of polyaniline for development of organic/inorganic hybrid solar cells. Presented at: Solar Asia 2013 : 2nd International Conference on Solar Energy Materials, Solar Cells and Solar Energy Applications, Kuala Lumpur, Malaysia, 2013

Other publications

Dharmadasa, I. (n.d.). Solar villages for sustainable development. Association of Professional Sri Lankans in the UK: http://www.apsl.org.uk/Solar%20Villages%20for%20Sustainable%20Development-Nov-2013.pdf

Dharmadasa, I., Gunaratne, L., Weerasinghe, A.R., & Deheragoda, K. (n.d.). Solar villages for sustainable development and reduction of poverty. [No Publisher]

- External examiner for over 26 PhD theses;
- Fellow of the World Innovation Foundation (FWIF) since June 2003;
- Fellow of the Institute of Physics (FInstP) since March 2004;
- Chartered Engineer (CEng) since March 1999;
- Chartered Physicist (CPhys) since 1986;
- Member of the British Council Advisers’ College (served for 6 years);
- Member of the DTI (Now TSB) panel of independent assessors and panel members to support New Renewable Energy Programme (served for 6 years);
- Member of the EPSRC Peer Review College (served for 6 years);
- Referee for 14 international journals (Semicond. Sci. Technol., Thin Solid Films, Surfaces & Interfaces, Solar Energy Materials & Solar Cells, Optical Materials, Solid State Electronics, J. Phys. D, Applied Physics, Chemistry & Physics of Matter, J. of Physical Chemistry, etc.);
- One of the Editors of Journal of Materials; Materials in Electronics;
- Member of the Editorial Board of "Solar-Asia" conference series;
- Member of the Editorial Board of the Scientific World Journal;
- President of APSL (Association of Professional Sri Lankans in the UK), Two year term from 2009-2011, one of the 6 APSL-UK initiators;
- Member of the Panel of Academic Advisers for Commonwealth Scholarship Commission and Fellowship Plan;
- Adviser to European Commission's FP7 & Horizon 2020 - Solar Energy Research Projects;
- Adviser to several Governments on Renewable Energy applications (Sri Lanka, UK, Romania, Canada).

Current PhD Students:
- Ashfaque Alam. Development of Next Generation Solar Cells based on p-type window materials.

Past Doctoral Researchers:
Dharme has successfully supervised 28 projects (18 PhD projects as the Director of Studies (DoS), and 10 projects as the second supervisor). The 16 PhD projects completed as the DoS are listed below.

- Dr. Ayotunde Ojo. Next Generation Solar Cells based on Graded Bandgap Device Structures. 2017.
- Dr. Mohammed Madugu. Processing of Semiconductors and Thin Film Solar Cells Using Electroplating. 2016.
- Dr. O. I. Olusola. Optoelectronic devices based on graded bandgap structures utilising electroplated semiconductors. October 2016.
- Dr. H. I. Salim. Multilayer solar cells based on CdTe grown from nitrate precursor. March 2016.
- Dr. Azlian Nor Abdul-Manaf. Organic/Inorganic hybrid solar cells based on electroplated CdTe. November 2015.
- Dr. Fijay Fauzi. R&D of CdS/CdTe solar cells incorporating ZnTe layers. June 2015.
- Dr. Obi Kinsley Echendu. Thin film solar cells using All-Electrodeposited ZnS, CdS and CdTe materials. April 2014.
- Dr. Ajith Weerasinghe. Solar cells based on electrodeposited thin films of ZnS, CdS, CdSSe and CdTe. February 2013.
- Dr. Osama S. Elsherif. Electrical characterisation of defects in wide bandgap semiconductors. June 2012.
- Dr. Dahiru G. Diso. R&D of CdTe based thin film PV solar cells. October 2011.
- Dr. Gafar E. A. Mufta. R&D of CuInTe2 and CdTe based thin film PV solar cells. February 2010.
- Dr. Jayne S. Wellings. Electrodeposition of Semiconductors for Applications in Thin Film Solar Cells. August 2009.
- Dr. Gavin J. Tolan. Electro-Chemical Development of CuInGaSe2 based photovoltaic Solar cells. October 2008.
- Dr. Thomas Delsol. R&D of CuInSe2 - based Photovoltaic Solar cells. September 2001.
- Dr. Stephen M McGregor. Solar cells based on Electrodeposited CdS and CdTe Films. August 1999.
- Dr. J-J S D McChesney. Development of Electronic Materials for Infra-Red Detector Systems. Autumn 1999.
- Dr. Anura P Samantilleke. Electrodeposition of ZnSe, CdSe and CdTe thin film Materials and Optoelectronic Devices. September 1998.
- Dr. Chris J Blomfield. Study of Surface Modifications for Improved Selected Metal (II-VI) Semiconductor Based Devices.