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Dr. C.A. Thotawatthage

Senior Lecturer

chathuranga@as.rjt.ac.lk
+94252266129 | +94779165678

Education

  • Ph.D. in Physics
    University of Peradeniya, Sri Lanka (2018)
  • M.Sc. in Computer Science
    University of Peradeniya, Sri Lanka (2013)
  • B.Sc (Honors) in Applied Sciences
    University of Peradeniya, Sri Lanka (1997)

Professional Qualifications

  • Temporary Senior Lecturer, Rajarata University of Sri Lanka, From 2020.08. – 2023.07.
  • Working as a Visiting Research fellow in Institute of Fundamental Studies, Hanthana Road, Kandy from 2020.07.
  • Visiting Lecturer (Electronics), Open University of Sri Lanka (Polgolla), 2020.02 – 2020.07.
  • Visiting Lecturer (Mathematical Method for Physicists), Rajarata University of Sri Lanka, 2019.12 – 2020.07.
  • Visiting Lecturer (Data acquisition and signal processing), Open University of Sri Lanka (Polgolla), 2019.06 – 2019.10.
  • Worked as a Joiner Research fellow in Institute of Fundamental Studies, Hanthana Road, Kandy from 2018.06.01 to 2020.06.30.
  • Worked as a Research assistant (Grade I) in Institute of Fundamental Studies, Hanthana Road, Kandy from 2013.12.01 to 2018.03.01.
  • Worked as a Research assistant (Grade II) in Institute of Fundamental Studies, Hanthana Road, Kandy from 2009.06.15 to 2013.09.15.
  • Worked as a volunteer in Institute of Fundamental Studies, Hanthana Road, Kandy from 2007.08.30 to 2009.06.14.
  • 4-month industrial training – projects on improving waste management system under Quality Assurance Executive in Lanka Transformers Limited, Angulana, Moratuwa.

Current Researches and Projects

Research Interests

  • Dye sensitized Solar Cells
  • Battery
  • Super Capacitors

Teaching Subjects

  • PHY 1104 – Modern Physics
  • PHY 2103 – Electronics I
  • PHY 2204 – Physical Optics
  • PHY 2210 – Atmospheric Physics
  • PHY 3302 – Mathematical Methods for Physicists
  • PHY 3207 – Energy Resources
  • PHY 3211 – Medical Physics
  • PHY 3212 – Electronics II
  • PHY 3215 – Practical Unit (Electronics)
  • PHY 4201 – Biophysics
  • PHY 4308 – Characterization Techniques
  • PHY 4209 – Physics of Semiconductor Devices
  • ICT 1202 – Electronic Circuits
  • CHE 3222 – Electronics and IT for chemistry

Academic Reviewing, Editor, Chair

Editor

  • Applied Sciences Undergraduate Research Sessions (ASURS) – RUSL 2025 (Physics)
  • Applied Sciences Undergraduate Research Sessions (ASURS) – RUSL 2026 (Physics)

Reviewer

  • A reviewer of the Undergraduate Research Symposium of Technology 2022 (URSoT 2022) – Faculty of Technology, Rajarata University of Sri Lanka – 2022.
  • A reviewer of the Journal of the National Science Foundation of Sri Lanka since – 2023.
  • A reviewer of the Undergraduate Research Symposium of Technology 2024 (URSoT 2024) – Faculty of Technology, Rajarata University of Sri Lanka – 2024.
  • A reviewer of the Peradeniya University International Research Symposium and Exposition – 2024.
  • A reviewer of the Research Congress of the Postgraduate Institute of Science, University of Peradeniya – 2025
  • A reviewer of the Young Scientists’ Conference on Multidisciplinary Research (YSCMR), Young Scientists Association (YSA) of the National Institute of Fundamental Studies (NIFS) – 2025
  • A reviewer of the Y14th Annual Science Research Session (ASRS 2025), The Faculty of Applied Sciences, South Eastern University of Sri Lanka (SEUSL) – 2025
  • A reviewer of the Undergraduate Research Symposium of Technology 2026 (URSoT 2026) – Faculty of Technology, Rajarata University of Sri Lanka – 2026.

Positions Held

  • Coordinator of Physics
  • Chairperson – Board of Study in Physical Sciences for External degree programs
  • Student counsellor

Publications

Full papers – International Journal

  • Y. P. Y. P. Ariyasinghe, T. R. C. K. Wijayarathna, I. G. C. K. Kumara, I. P. L. Jayarathna, C. A. Thotawatthage, W. S. S. Gunathilake, G. K. R. Senadeera and V. P. S. Perera; Efficient passivation of SnO2 nano crystallites by Indoline D-149 via dual chelation; Journal of Photochemistry and Photobiology A: Chemistry; 217; 249-252 (2011)
  • M. A. K. L. Dissanayake, C. A. Thotawatthage, G. K. R. Senadeera, T. M. W. J. Bandara, W. J. M. J. S. R. Jayasundera and B. E. Mellander; Efficiency enhancement by mixed cation effect in dye-sensitized solar cells with PAN based gel polymer electrolyte; Journal of Photochemistry and Photobiology A: Chemistry; 246; 29-35 (2012)
  • M. A. K. L. Dissanayake, C. A. Thotawatthage, G. K. R. Senadeera, T. M. W. J. Bandara, W. J. M. J. S. R. Jayasundara and B.-E. Mellander; Efficiency enhancement in dye sensitized solar cells based on PAN gel electrolyte with Pr4NI + MgI2 binary iodide salt mixture; J ApplElectrochem;43, 891-901 (2013)
  • M.A.K.L. Dissanayakea, H.K.D.W.M.N.R. Divarathnea, C.A. Thotawatthage, C.B. Dissanayake, G.K.R. Senadeera and B.M.R. Bandara; Dye-sensitized solar cells based on electrospun polyacrylonitrile (PAN) nanofibre membrane gel electrolyte; Electrochimica Acta; 130; 76–81 (2014)
  • M.A.K.L. Dissanayakea, R. Jayathissa, V.A. Senevirathne, C.A. Thotawatthage, G. K. R. Senadeera and B.-E. Mellander; Polymethylmethacrylate (PMMA) based quasi-solid electrolyte with binary iodide salt for efficiency enhancement in TiO2 based dye sensitized solar cells; Solid State Ionics; 265:85–91 (2014)
  • A.K. Arof, M.F. Aziz, M.M. Noor, M.A. Careem, L.R.A.K. Bandara, C.A. Thotawatthage, W.N.S. Rupasinghe and M.A.K.L. Dissanayake; Efficiency enhancement by mixed cation effect in dye-sensitized solar cells with a PVdF based gel polymer electrolyte; International Journal of Hydrogen Energy; 39, 6, 2929-2935 (2014).
  • M.A.K.L. Dissanayakea, W.N.S. Rupasinghe, V.A. Senevirathne, C.A. Thotawatthage and G. K. R. Senadeera; Optimization of iodide ion conductivity and nano filler effect for efficiency enhancement in polyethylene oxide (PEO) based dye sensitized solar cells; Electrochimica Acta; 145; 319-326 (2014)
  • M. A. K. L. Dissanayake, J. M. K. W. Kumari, G. K. R. Senadeera and C. A. Thotawatthage; Efficiency enhancement in plasmonic dye-sensitized solar cells with TiO2 photoanodes incorporating gold and silver nanoparticles; Journal of Applied Electrochemistry; 46; 47-58 (2016).
  • M.A.K.L. Diasanayake, G.K.R. Senadeera, H.N.M. Sarangika, P.M.P.C. Ekanayake, C.A. Thotawattage, H.K.D.W.M.N.R. Divarathnea and   J.M.K.W. Kumari; TiO2 as a Low Cost, Multi-Functional Material; Materials Today: Proceedings; 3; S40-S47 (2016).
  • S.S. Dissanayake, M.A.K.L. Dissanayake, V.A. Seneviratne, G.K.R. Senadeera and C.A. Thotawattage; Performance of Dye Sensitized Solar Cells Fabricated with Electrospun Polymer Nanofiber Based Electrolyte; Materials Today: Proceedings; 3, S104-S111 (2016).
  • M.A.K.L. Dissanayakea, H.K.D.W.M.N. Divarathnaa, C.B. Dissanayake, G.K.R. Senadeera, P.M.P.C. Ekanayake and C.A. Thotawattage: An innovative TiO2 nanoparticle/nanofibre/nanoparticle, three-layer composite photoanode for efficiency enhancement in dye-sensitized solar cells; Journal of Photochemistry and Photobiology A: Chemistry 322, 110–118 (2016).
  • M. A. K. L. Dissanayake, E. M. B. S. Ekanayake, L. R. A. K. Bandara, V. A. Seneviratne, C. A. Thotawatthage, S. L. Jayaratne and G. K. R. Senadeera; Efficiency enhancement by mixed cation effect in polyethylene oxide (PEO)-based dye-sensitized solar cells; Journal of Solid state Electrochemistry, 20, 193-201 (2016).
  • J.M.K.W. Kumari, G.K.R. Senadeera, M.A.K.L. Dissanayake and C.A. Thotawatthage; Dependence of photovoltaic parameters on the size of cations adsorbed by TiO2 photoanode in dye-sensitized solar cells; Ionics; 23, 10, 2895-2900 (2017).
  • M.A.K.L. Dissanayake, J.M.K.W. Kumaria, G.K.R. Senadeera, C.A. Thotawatthage, B.-E. Mellander and I. Albinsson; A novel multilayered photoelectrode with nitrogen doped TiO2 for efficiency enhancement in dye sensitized solar cells; Journal of Photochemistry and Photobiology A: Chemistry; 349, 63-72 (2017).
  • M.A.K.L. Dissanayakea, T. Jaseetharan, G.K.R. Senadeera and C.A. Thotawatthage; A novel, PbS:Hg quantum dot-sensitized, highly efficient solar cell structure with triple layered TiO2 photoanode; Electrochimica Acta; 269, 172-179 (2018).
  • G.K.R. Senadeera, A. Weerasinghe, M.A.K.L. Dissanayake and C.A. Thotawatthage; A five-fold efficiency enhancement in dye sensitized solar cells fabricated with AlCl3 treated, SnO2 nanoparticle/nanofibre/nanoparticle triple layered photoanode; Journal of Applied Electrochemistry; 48 (11), 1255-1264 (2018).
  • M.A.K.L. Dissanayake, T. Jaseetharan, G.K.R. Senadeera, J.M.K.W. Kumari, C.A. Thotawatthage, B-E. Mellander, I. Albinson and M. Furlani; Highly efficient, PbS:Hg quantum dot–sensitized, plasmonic solar cells with TiO2 triple-layer photoanode; Journal of Solid State Electrochemistry 23 (6), 1787-1794 (2019).
  • G.K.R. Senadeera, C.A. Thotawatthage and M.A.K.L. Dissanayake; Efficiency enhancement in Dye Sensitized Solar Cells by light scattering in photoanode with TiO2 nanotubes; Journal of Physics: Conference Series 1552, 012002 (2020).
  • A. Weerasinghe, S. Sen, J.M.K.W. Kumari, M.A.K.L. Dissanayake, G.K.R. Senadeera, C.A. Thotawatthage, M. Ekanayake, R.Z. Patrick, J. Cullen, P. Sonar, K. Vasilev and Kostya (Ken) Ostrikov; Efficiency enhancement of low-cost metal free dye sensitized solar cells via non-thermal atmospheric pressure plasma surface treatment; Solar Energy, 215, 367-374 (2021).
  • G.K.R. Senadeera, D. Balasundaram, M.A.K.L. Dissanayake, B.A Karunaratne, A.M.J.S. Weerasinghe, C.A. Thotawatthage, T. Jaseetharan, J.M.K.W. Kumari and D.L.N. Jayathilaka, Efficiency enhancement in dye-sensitized solar cells with co-sensitized, triple layered photoanode by enhanced light scattering and spectral responses; Bulletin of Materials Science; 44, 68 (2021).
  • J.M.K.W. Kumari, G.K.R. Senadeera, A.M.J.S. Weerasinghe, C.A. Thotawatthage and M.A.K.L. Dissanayake; Effect of polyaniline (PANI) on efficiency enhancement of dye-sensitized solar cells fabricated with poly(ethylene oxide)-based gel polymer electrolytes; Journal of Solid State Electrochemistry; 25, 695–705, (2021).
  • S.M.N.K. Thilakarathne, A. Ekanayake, P.S. Madamarandawala, W.B.C.P. Weerarathne, C. A. Thotawatthage and D. N. Magana-Arachchi; Impact of haze events on airborne bacterial consortia–a case study; SN Applied Sciences, 3, 14, (2021).
  • M.A.K.L. Dissanayake, K. Paramanathan, G.K.R. Senadeera, C.A. Thotawatthage, K. Balashangar, P. Ravirajan and B.S. Dassanayake; Optical transmission and photoconductivity of chemical bath-deposited CdS thin films for optoelectronic applications; Thin Solid Films, 791, (2024).
  • M.A.K.L. Dissanayake, W.N.S. Rupasinghe, V.A. Seneviratne, C.A. Thotawatthage and G.K.R. Senadeera; Efficiency enhancement due to the combined mixed cation effect and TiO2 nanofiller effect in PEO and ionic liquid-based dye-sensitized solar cells; Journal of Solid State Electrochemistry, (2024).

Full papers – International Conference Proceedings

  • C.A. Thotawatthage, G.K.R. Senadeera, T.M.W.J. Bandara and M.A.K.L. Dissanayake, Mixed cation effect in enhancing the efficiency of dye sensitized solar cells based on polyacrylonitrile (PAN) and nano-porous TiO2, proceedings of Solar Asia 2011 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2011) 175-179
  • H. Iqbal, K. Perera, V.A. Seneviratne, W.N.S. Rupasinghe, C.A. Thotawatthage, G.K.R. Senadeera and M.A.K.L. Dissanayake, Dye sensitized solar cells with polymethylmethacrylate (PMMA) based gel polymer electrolyte and tetrapropylammonium iodide salt (Pr4N+I–), proceedings of Solar Asia 2011 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2011) 163-168
  • P.D.N.Gunasekara, Y.P.Y.P. Ariyasinghe, T.R.C.K. Wijayarathna, C.A. Thotawatthage,  M.A.K.L. Dissanayake  and  G.K.R. Senadeera, efficient  quasi- solid  poly (acrylonitrile) (PAN) based polymeric electrolyte for dye sensitized solar cells and its characteristics, proceedings of  Solar Asia 2011 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2011) 180-185
  • H. A. C. S. Perera, K. Perera, K. Vidanapathirana, V.A. Seneviratne, W.N.S. Rupasinghe, C.A. Thotawatthage, G.K.R. Senadeera and M.A.K.L. Dissanayake, quasi-solid state dye sensitized solar cells with poly(vinylidene-fluoride) (PVdF) based gel polymer electrolyte and nano-porous TiO2 electrode, proceedings of Solar Asia 2011 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2011) 186-192
  • P.W. Abeygunawardhana, S. Palamakubura, C.A.  Thotawatthage, G.K.R. Senadeera and M.A.K.L. Dissanayake, nanocrystalline TiO2 photo-sensitized with natural dyes, proceedings of Solar Asia 2011 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2011) 229-235.
  • C.N. Nupearachchi, C.A. Thotawatthage, G.K.R. Senadeera and V.P.S. Perera, comparison of natural pigments in black tea and green tea with DSSCs, proceedings of Solar Asia 2011 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2011) 241-245
  • C.A. Thotawatthage and G.K.R. Senadeera, quasi-solid natural rubber polymer electrolytes for dye sensitized solar cells, proceeding of polychar 19 World Forum on Advanced Materials, March 20 – 24, 2011, Kathmandu, NEPAL, 250
  • Rohan Senadeera, Shasheeka Jayarathne, Samodha Gunathilake, Chathuranga Thotawatthage, Piyasiri Ekanayake and Lakshman Dissanayake; Novel blended PVdF-PEO nanocomposite polymer electrolyte with mixed cations and its application in dye sensitized solar cells; sustainable future energy 2012 and 10th see forum Innovations for Sustainable and Secure Energy; 21-23 November 2012, Brunei Darussalam
  • T.M.W.J Bandara, W.J.M.J.S.R. Jayasundara, M.A.K.L. Dissanayake, C.A. Thotawatthage, G.K.R. Senadeera, L.R.A.K. Bandara and B.-E. Mellander; Dye sensitized solar cells based on nano porous TiO2 and gel polymer electrolytes containing tetrapropyle ammonium iodide and 1-methyl-3-propyl imadazolium iodide binary iodide system; Solar Asia 2013 Int. Conf., CIUM, University of Malaya, Kuala Lumpur, Malaysia (2013) 111-116
  • P.W. Abeygunawardhana, C.A. Thotawatthage, G.K.R. Senadeera and M.A.K.L. Dissanayake; Efficiency dependence on dipping time and pH value of natural dye of nanocrystalline, nanoporous TiO2 photo sensitizer; Solar Asia 2013 Int. Conf., CIUM, University of Malaya, Kuala Lumpur, Malaysia (2013) 117-122
  • T.R.C.K. Wijayarathna, Y.P.Y.P Ariyasinghe, G.K.R. Senadeera, V.P.S. Perera and C.A. Thotawatthage; Use of surface Plasmon resonance of gold nanoparticles in the efficiency enhancement of dye sensitized solar cells with TiO2; Solar Asia 2013 Int. Conf., CIUM, University of Malaya, Kuala Lumpur, Malaysia (2013) 123-130
  • H.K.D.W.M.N.R. Divarathne, M.A.K.L. Dissanayake, G.K.R. Senadeera and C.A. Thotawatthage; Quasi-solid state dye sensitized solar cells based on electrospun polyacrylonitrile (PAN) nanofiber membrane electrolyte; Solar Asia 2013 Int. Conf., CIUM, University of Malaya, Kuala Lumpur, Malaysia (2013) 131-136
  • S.L. Jayaratne, M.A.K.L. Dissanayake, V.A. Senaviratne, C.A. Thotawatthage and G.K.R. Senadeera; Efficiency enhancement in dye sensitized solar cells based on blended polymer electrolyte PMMA:PEG with Pr4NI as the iodide salts; Solar Asia 2013 Int. Conf., CIUM, University of Malaya, Kuala Lumpur, Malaysia (2013) 137-142.
  • W.N.S. Rupasinghe, C.A. Thotawatthage, M.A.K.L. Dissanayake, G.K.R. Senadeera and V.A. Seneviratne; Efficiency enhancement of dye sensitized solar cells by TiO2 nano fillers in polymer electrolyte; Solar Asia 2013 Int. Conf., CIUM, University of Malaya, Kuala Lumpur, Malaysia (2013) 143-148.
  • H.N.M. Sarangika, G.K.R. Senadeera, C.A. Thotawatthage and M.A.K.L. Dissanayake; Novel quasi solid state electrochromic smart windows based on TiO2 and SnO2 electrodes with PMMA gel electrolyte; Solar Asia 2013 Int. Conf., CIUM, University of Malaya, Kuala Lumpur, Malaysia (2013) 169-174
  • E.M.T.K. Ekanayake, V.A. Senevirathne, L.R.A.K. Bandara, K.V.L. Amarasinghe, C.A. Thotawatthage, J.M.K.W. Kumari and M.A.K.L. Dissanayake; Electrical characterization of tetrabutylamonium iodide based polymer free Gel electrolyte; 14th Asian Conference on Solid State Ionics (ACSSI 2014), At UTown, NUS, Singapore (2014)
  • H. N. M Sarangika, G. K. R Senadeera, H. K. D. W. M. N. R. Divaratne, C.A. Thotawatthage, P. M. P. C. Ekanayake and M. A. K. L Dissanayake; High Performance Dye-Sensitized Solar Cells with PEO based gel polymer electrolyte using TiO2 nano fibers developed by electrospinning; 14th Asian Conference on Solid State Ionics (ACSSI 2014), UTown, NUS, Singapore (2014).
  • M. Amarasinghe, C.A. Thotawatthage, M.A.K.L. Dissanayake, B.S. Dasanayake and G.K.R. Senadeera; Effect of the nano-structure of TiO2 photoanodes on the performance of dye sensitized solar cells; Peradeniya University International Research Session, University of Peradeniya, (2014).
  • H.N.M. Sarangika, W.A.R.B. Weerasekara, G.K.R. Senadeera, M.A.K.L. Dissanayake, C.A. Thotawatthage, K.V.L. Amarasinghe and V.A. Senevirathne; Use of carbon embedded TiO2 as cathode material in rechargeable Mg batteries with Polyethylene Oxide based Gel electrolyte; Peradeniya University International Research Session, University of Peradeniya, (2014)
  • K.Paramanathan, M.A.K.L.Dissanayake, G.K.R.Senadeera, C.A. Thotawatthage and P.Ravirajan; Optimizing growth process of CdS semiconductor thin films for efficiency enhancement in CdS/CdTe solar cells; Ruhuna International science and Technology Conference (RISTCON 2014),  University of Ruhuna Sri Lanka (2014)
  • J. Weerasinghe, G. K.R.Senadeera, V. A. Senevirathne, C. A. Thotawatthage and J.M.K.W. Kumari; Dye sensitized solar cells fabricated with polymer free quasi solid state (gel) electrolyte; Conference: Ruhuna International science and Technology Conference,  University of Ruhuna Sri Lanka (2015)
  • J.M.K.W. Kumari, M.A.K.L. Dissanayake, G.K.R. Senadeera and C.A. Thotawatthage; Plasmonic dye sensitized solar cells with TiO2 photo-anodes incorporating gold and silver nanoparticles; 5th International Conference on Functional Materials & Devices (ICFMD 2015), Johor Bahru, Malaysia; (2015)
  • J. Weerasinghe, M.A.K.L. Dissanayake, G.K.R. Senadeera, V.A Senaviratne and C. A. Thotawatthage; Novel Fumed Silica based, quasi-solid state electrolyte for Dye Sensitized Solar cells; 5th International Conference on Functional Materials & Devices (ICFMD 2015), Johor Bahru, Malaysia; (2015)
  • K. Paramanathan, M.A.K.L. Dissanayake, G.K.R. Senadeera, C.A. Thotawatthage, K. Balashangar and P. Ravirajan; Efficiency enhancement in CdS/CdTe thin film solar cells by optimizing the growth of CdS film and CdTe surface treatment; proceedings of Solar Asia 2018 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2018) 40-45.
  • B. Dushyanthini, M.A.K.L. Disanayake, G.K.R. Senadeera, A.M.J.S. Weerasinghe, C.A. Thotawattage and D.L.N. Jayathilaka; Performance enhancement of TiO2 based Dye Sensitized Solar Cells by employing triple layered photoanode consisting with nanofibres of TiO2; proceedings of Solar Asia 2018 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2018) 130-135.
  • J.M.K.W. Kumari, M.A.K.L. Dissanayake, G.K.R. Senadeera and C.A. Thotawatthage; TiO2 Photo-Anode with N-doped TiO2 for Efficiency Enhancement in Dye Sensitized Solar Cells; proceedings of Solar Asia 2018 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2018) 137.
  • C.A. Thotawatthage, M.A.K.L. Dissanayake, G.K.R. Senadeera and B.-E. Mellander; Incorporation of Tertiary Alkaline Iodide Salts in Polyacrylonitrile (PAN) Based Gel Polymer Electrolytes Toward the Efficiency Enhancement of Dye Sensitized Solar Cells; proceedings of Solar Asia 2018 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2018) 140-147.
  • A.M.J.S. Weerasinghe, M.A.K.L. Dissanayake, G.K.R. Senadeera, C.A. Thotawatthage and V.A. Senevirathne; Incorporation of Triple Layered Structure of Tin Oxide Photoanode Towards the Efficiency Enhancement in Dye Sensitized Solar Cells; proceedings of Solar Asia 2018 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2018) 148.
  • M.A.M. Ziyan, M.A.K.L. Disanayake, U.L. Zainudeen, G.K.R. Senadeera and C.A. Thotawatthage; Study of Dye-Sensitized Solar Cells with TiO2 Nanoparticles/Nanofibers Composite Electrode Using Photovoltaic and EIS Measurements; proceedings of Solar Asia 2018 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2018) 149-158.
  • T. Jaseetharan, M.A.K.L. Dissanayake, G.K.R. Senadeera and C.A. Thotawatthage; Enhancing the Performance of PbS:Hg Quantum Dot – Sensitized Solar Cells by Controlling the Surface Charge of TiO2 Electrode; proceedings of Solar Asia 2018 Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka (2018) 159-163.
  • E.M.U.A. Ekanayake, J.M.P.S. Madamarandawala, A.M.J.S. Weerasinghe, C.A. Thotawatthage, G.K.R. Senadeera and D.N. Magana-Arachchi; A novel low cost approach for Tuberculosis diagnosis using Coconut water and Silicon solar cell cum Biosensor; South Asian Biotechnology Conference 2018, (2018) 105.
  • K. Umair, M.A.K.L. Dissanayake, G.K.R. Senadeera, J.M.K.W. Kumari, C.A. Thotawatthage and T. Jaseetharan; The effect of incorporating a mixture of TiO2 P25 and P90 in the photoanode towards the efficiency enhancement in dye-sensitized solar cells; AMCEHA 2019; University of Jaffna (2019).
  • D. Balasundaram, G.K.R. Senadeera, M.A.K.L. Dissanayake, A.M.J.S. Weerasinghe, C.A. Thotawatthage and N. Jayathilaka; Performance Enhancement of Dye Sensitized Solar Cells by Cosensitization of Triple Layered Photoanode Consisting of TiO2 Nanofibers; AMCEHA 2019; University of Jaffna (2019).
  • J.M.K.W. Kumari, M.A.K.L. Dissanayake, G.K.R. Senadeera, A.M.J.S. Weerasinghe and C.A. Thotawatthage; Effect of Polyaniline on the Performance of Dye Sensitized Solar Cells Fabricated with Poly (Ethylene Oxide) Based Gel Polymer Electrolytes; AMCEHA 2019; University of Jaffna (2019).

Full papers – Local Journal

  • T.R.C.K. Wijayarathna, Y.P.Y.P. Ariyasinghe, I.P.L. Jayarathne, C.A. Thotawatthage, M.R. Nishantha, G.K.R. Senadeera and V.P.S. Perera, Effect of surface Plasmon resonance of gold nanoparticle in the TiO2 film of dye sensitized photo electrochemical solar cells, Proceeding of OUSL annual academic session (2009) 205-208
  • T.R.C.K. Wijayarathna, Y.P.Y.P. Ariyasinghe, C.A. Thotawatthage, V.P.S. Perera and G.K.R. Senadeera; Effect of Ni doping of the nanostructured photo anode on the performance of dye sensitized solar cells; Proceeding of OUSL annual academic session (2011) 311-314
  • G.K.R. Senadeera, H.M.N. Sarangika, C.A. Thotawatthage, T.R.C.K. Wijayarathna and Y.P.Y.P. Ariyasinghe; Studies on quasi solid state electrochromic smart windows based on TiO2 and SnO2; Proceeding of OUSL annual academic session (2012) 234-237.
  • H.K.D.W.M.N.R. Divaratne, G.K.R. Senadeera, M.A.K.L. Dissanayake and C.A. Thotawatthage; Enhancement of efficiency in dye sensitized solar cells by TiO2 nanofibre/nanoparticle composite electrode; PGIS ResCon 2015, PGIS Research Congress, Postgraduate Institute of Science, University of Peradeniya, Peradeniya, Sri Lanka; (2015)
  • J.M.K.W. Kumari, M.A.K.L. Dissanayake, G.K.R Senadeera and C.A. Thotawatthage; Electrochemical Impedance Analysis of plasmonic dye sensitized solar cells based on silver nanoparticles; PGIS ResCon 2015, PGIS Research Congress, Postgraduate Institute of Science, University of Peradeniya, Peradeniya, Sri Lanka; (2015)
  • K. Paramanathan, M.A.K.L. Dissanayake, G.K.R Senadeera, C.A. Thotawatthage, K. Balashangar and P. Ravirajan; Properties of CdS and In substituted CdS thin films prepared by chemical bath deposition; PGIS ResCon 2015, PGIS Research Congress, Postgraduate Institute of Science, University of Peradeniya, Peradeniya, Sri Lanka; (2015)
  • J.M.K.W. Kumari, N. Sanjeevadharshini, M.A.K.L. Dissanayake, G.K.R. Senadeera and C.A. Thotawatthage: The effect of TiO2 photoanode film thickness on photovoltaic properties of dye-sensitized solar cells; Ceylon Journal of Science 45(1): 33-41 (2016)
  • A.M.J.S. Weerasinghe, C.A. Thotawatthage, M.A.K.L. Dissanayake and G.K.R. Senadeera: Eco-Friendly dye sensitized solar cells made with natural pigment from fire furn and bio degradable polymer electrolyte; South Asian Symposium on Sustainable Environment Management – poster and extended abstract (2016)
  • C.A. Thotawatthage, M.A.K.L. Dissanayake, G.K.R. Senadeera, A.M.J.S. Weerasinghe and J. M. K. W. Kumari; Efficiency enhancement in dye sensitized solar cells with gel polymer electrolyte containing polyacrylonitrile and mixed cation alkaline iodide salts; PGIS Research Congress, Postgraduate Institute of Science, University of Peradeniya, Peradeniya, Sri Lanka; 115, (2016)
  • C.A. Thotawatthage, J.M.K.W. Kumari, A.M.J.S. Weerasinghe, P.W. Abeygunawardhana, G.K.R.   Senadeera, M.A.K.L.   Dissanayake, Properties   and characterization of Anthocyanin dye extracted from Rhizomatous sp. (Black Velvet) for Dye sensitized solar cells, 5th Workshop on thin film solar cells and their science and technology, University of Kelaniya, Sri Lanka (2016)
  • A.M.J.S. Weerasinghe, M.A.K.L. Dissanayake, G.K.R. Senadeera, V.A Senaviratne, C.A. Thotawatthage and J.M.K.W. Kumari, Application of electrospun cellulose acetate nanofibre membrane based quasi-solid state electrolyte for dye sensitized solar cells; Ceylon Journal of Science 46(2), 93-98 (2017).
  • M.A.M. Ziyan, M.A.K.L. Dissanayake, U.L. Zainudeen, G.K.R. Senadeera and C.A. Thotawatthage; Efficiency Improvement of Dye-Sensitized Solar Cell by The Composite of Titanium Dioxide Nanoparticles and Electrospun Titanium Dioxide Nanofiber; 6th Annual Science Research Sessions – 2017 (ASRS – 2017), Faculty of Applied Sciences, South Eastern University of Sri Lanka (2017).
  • H.U. Kumarasinghe, L.R.A.K. Bandara, T.M.W.J. Bandara, G.K.R. Senadeera and C.A. Thotawatthage; Fabrication of β-phase poly (vinylidene fluoride) piezoelectric film by electrospinning for nanogenerator preparations; Ceylon Journal of Science 50 (5), 357-363 (2021).
  • W.A.C.J Wengappuliarachchi, C.A. Thotawatthage, M.A.K.L. Dissanayake and G.K.R. Senadeera; PVA/(2-Propanol) based bee-honey (core) and povidone-iodine (sheath) coaxial electrospun beads on string nanofibrous scaffold for controlled drug release; Proceeding of the International Open University Research Sessions (iOURS 2022).
  • T.D.B. Liyanagedara, C.N. Nupearachchi and C.A. Thotawatthage; Potential of iron-based superconductors (IBS) in future applications; Ceylon Journal of Science 52(3): (2023)

Abstracts / Extended Abstracts