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Research Group

Photovoltaic (PV) Research Group/Solar Energy Material Research Group

Inroduction

The Photovoltaic (PV) Research Group of Department of Physics and Electronics, University of Kelaniya was initiated in 1985 by Vidya Nidhi Professor Emeritus W P Siripala. Main force of the research group is the development of highly efficient photovoltaic and photoelectrochemical solar energy conversion devices with low-cost semiconductor materials and techniques. Group has well-equipped research laboratory for growth and characterization of semiconductor materials as well as fabrication and characterization of photovoltaic and photoelectrochemical devices. Group has produced many postgraduates. Currently several students are working their research studies leading to their postgraduate degrees.

Group Members

Prof LBDRP Wijesundera (Leader)
Emeritus Professer W Siripala
Prof K M D C Jayathilaka
Prof W T M A P K Wanninayake
Dr F S B Kafi
Dr W G C Kumarage

Research Projects

Publications

W T M A P K Wanninayake, D G K K Namawardana, R M G Wanigasekara, K M D C Jayathilaka, R P Wijesundera, W Siripala, M I Malik, Efficiency Boost of Inverted Polymer Solar Cells Using Electrodeposited n-type Cu2O Electrons Selective Transport Layers (ESTLs), Journal of the National Science Foundation of Sri Lanka, J. Natn. Sci. Foundation Sri Lanka, 51 (2): (2023) 253- 261
WTRS Fernando, KMDC Jayathilaka, RP Wijesundera and W Siripala, A Comparative Study: Sequentially and Single Step Electrodeposited CZTS Thin Films, Phys. Status Solidi A, 202200231 (2022)
SAAB Thejasiri, FSB Kafi, RP Wijesundera, W Siripala, Fabrication of cuprous oxide homojunction solar cell by varying the lactic acid ion concentration of thin film p-Cu2O deposition bath, ESC Transactions, 107 (1), 19543-19550 (2022)
DGK Kalara Namawardana, RM Geethanjana Wanigasekara, WTM Aruna PK Wanninayake, KMD Charith Jayathilaka, Ruwan P Wijesundera, Withana Siripala, Muhammad Imran Malik, Fabrication of inverted organic solar cells on stainless steel substrate with electrodeposited and spin coated ZnO buffer layers, Journal of Polymer Engineering, 42 (3), 233-242 (2022)
FSB Kafi, KMDC Jayathilaka, RP Wijesundera, W Siripala, Effect of pre-surface treatments on p-Cu2O/Au Schottky junctions, Journal of the National Science Foundation of Sri Lanka, 49 (1), (2021)
FSB Kafi, RP Wijesundera, W Siripala, Enhanced Photoelectrochemical Water Splitting by Surface Modified Electrodeposited n‐Cu2O Thin Films, Phys. Status Solidi A, 2000330, (2020)
FSB Kafi, KMDC Jayathileka, RP Wijesundera, W Siripala, Improvement of photovoltaic properties of n-Cu2O/Au Schottky junctions, Materials Research Express, 6 (8), 085520 (2019)
FSB Kafi, KMDC Jayathileka, RP Wijesundera, and W Siripala, Dependence of interfacial properties of p-Cu2O/electrolyte and p-Cu2O/Au junctions on the electrodeposition bath pH of p-Cu2O films, Mater. Res. Express 5, 086406 (2018)
FSB Kafi, KMDC Jayathileka, RP Wijesundera, and W Siripala, Effect of Bath pH on Interfacial Properties of Electrodeposited n‐Cu2O Films, Physica Status Solidi (b), Phys. Status Solidi B, 255, 1700541 (2018)
RP Wijesundera, LKADDS Gunawardhana and W Siripala, Electrodeposited Cu2O homojunction solar cells: Fabrication of a cell of high short circuit photocurrent, Solar Energy Materials and Solar Cells, 157, pp. 881–886 (2016)
FSB Kafi, KMDC Jayathileka, RP Wijesundera, and W Siripala, Fermi-level pinning and effect of deposition bath pH on the flat-band potential of electrodeposited n-Cu2O in an aqueous electrolyte, Physica Status Solidi (b), 253 (10), 1965-1969 (2016)
KDRN Kalubowila, LKADDS Gunawardhana, RP Wijesundera, W Siripala, 2014, Methods for improving n-type photoconductivity of electrodeposited Cu2O thin films, Semi. Sci. Technol., 29(7), 075012, pp. 1-7 (2014)
RP Wijesundera, Fabrication of CuO/Cu2O heterojunction using electrodeposition technique for solar cell applications, Semi. Sci. Technol., 25(4), 045015, pp. 1-5 (2010)
RP Wijesundera, M Hidaka, K Koga, JY Choi and NE Sung, Structural and electronic properties of electrodeposited heterojunction of CuO/Cu2O, Ceramics-Silikaty 54(1), (2010)
RP Wijesundera, M Hidaka, K Koga, M Sakai, W Siripala, Jae-Young Choi, Nark Eon Sung, Effects of annealing on the properties and structure of electrodeposited semiconducting Cu-O thin films, Physica Status of Solidi (b), 244 (12), pp. 4629-4642 (2007)

RP Wijesundera, M Hidaka, W Siripala, Sun-Hee Choi, Nark Eon Sung, Min Gyu Kim, and Jay Min Lee, Electronic states and local structures of Cu ions in electrodeposited thin films of Cu and Cu2O from X-ray absorption spectra, Physica Status of Solidi (b), 243 (8), pp. 1791–1801 (2006)
RP Wijesundera, M Hidaka, K Koga, M Sakai, W Siripala, Growth and characterisation of potentiostatically electrodeposited Cu2O and Cu thin films, Thin Solid Films, 500, pp. 241-246 (2006)
RP Wijesundera, W Siripala, Preparation of CuInS2 Thin Films by Electrodeposition and sulphurisation for Applications in Solar Cells, Solar Energy Materials and Solar Cells 81, pp. 147-154 (2004)
R Garuthara, RP Wijesundera, and W Siripala, Characterisation of CuInS2 thin film prepared by electrodeposition and sulphurisation with photoluminescence spectroscopy, Solar Energy Materials and Solar Cells 79, pp 331-338 (2003)
RP Wijesundera, LDRD Perera, KD Jayasuriya, W Siripala, KTL De Silva, AP Samanthilleke and IM Dharmadasa, Sulphidation of electrodeposited Cuprous Oxide thin films for Photovoltaic Applications, Solar Energy Materials and Solar Cells 61, pp 277-286 (2000)
Siripala and J.R.P. Jayakody, Observation of n-type Photoconductivty in Electrodeposited Copper Oxide Film Electrodes in a Photoelectrochemical cell, Solar Energy Materials 14 (1986) 23.
Siripala, Optical Investigation of Electrodeposited Cuprous Oxide Film Electrodes, J. Ins. Phys. (Sri Lanka) 2 (1986) 1.
Siripala and K.P. Kumara, n-Type Electrical Conductivity in Cuprous Oxide Thin Films, J. Nat. Sci. Council (Sri Lanka) 16 (1988) 38.
Siripala and K.P. Kumara, A Photoelectrochemical Investigation of n- and p-type semi¬conducting behaviour of Copper Oxide Films, Semi. Sci. Technol. 4 (1989) 465.
Siripala and K.P. Kumara, Photovoltaic Properties at Cu2O/CuxS Heterojunction, J. Nat. Sci. Council (Sri Lanka) 19 (1991) 1.
Siripala, J. Vedel, D. Lincot and D. Cahen, Band Edge Shifts of p-type Copper Indium Diselenide Electrodes in Aqueous Electrolytes, Appl. Phys. Lett. 62 (1993) 519.
Siripala, Spectral Responses of Electrodeposited Cuprous Oxide, J. Nat. Sci. Council (Sri Lanka) 23 (1) (1995) 49.
D.R.D. Perera, W. Siripala and K.T.L. De Silva, Potentiostatic Electrodeposition of Cuprous Oxide Thin Films, J. Nat. Sci Coun., Sri Lanka, 24 (4) (1996) 299.
Siripala, L.D.R.D. Perera, K.T.L. De Silva, J.K.D.S. Jayanetti and I.M. Dharmadasa, Study of Annealing Effects of Cuprous Oxide Grown by Electrodepostion Technique, Solar Energy Materials44 (1996) 25.
W Siripala, Surface States at CuInSe2/Aqueous Electrolyte Interface, Cey. Journal of Science (Phy. Sci) Vol.4 (1997)
C Jayathilaka, LSR Kumara, K Ohara, C Song, S Kohara, O Sakata, W Siripala, S Jayanetti, Enhancement of Solar Cell Performance of Electrodeposited Ti/n-Cu2O/p-Cu2O/Au Homojunction Solar Cells by Interface and Surface Modification, Crystals, 10 (7), 609 (2020)
KMDC Jayathilaka, LSR Kumara, CH Song, S Kohara, O Sakata, V Kapaklis, W Siripala, JKDS Jayanetti, Annealing effects of the untreated and sulfur-treated electrodeposited n-type and p-type cuprous oxide thin films, Physica Status Solidi B, 253(4), 765–769 (2016)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Improved efficiency of electrodeposited p-CuO/n-Cu2O heterojunction solar cell, Applied Physics Express, 8, 065503 (2015)
KMDC Jayathilaka, AMR Jayasinghe, GU Sumanasekara, V Kapaklis, W Siripala, JKDS Jayanetti, Effect of Chlorine doping on electrodeposited cuprous oxide thin films on Ti substrates, Physica Status Solidi B, 252(6), 1300–1305 (2015)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Surface treatment of electrodeposited n-type Cu2O thin films for applications in Cu2O based devices, Physica Status Solidi RRL, 8(6), 592-595 (2014)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Ammonium Sulfide Surface Treatment of Electrodeposited p-Type Cuprous Oxide Thin Films, Electronic Materials Letters 10(2), 379-382 (2014)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Sulfidation of electrodeposited microcrystalline/nanocrystalline cuprous oxide thin films for solar energy application, Semiconductor Science and Technology, 27, 125019 (2012)
W Siripala, KMDC Jayathilaka, JKDS Jayanetti, Low cost solar cells with electrodeposited cuprous oxide, Journal of Bionanoscience, 3, 118-123 (2009)
KMDC Jayathilaka, W Siripala, JKDS Jayanetti, Electrodeposition of n-type, p-type and p-n homojunction cuprous oxide thin films, Sri Lankan Journal of Physics 9, 35-46 (2008)

Peer Reviewed Non-Indexed Journal publications

RM Geethanjana Wanigasekara, DGKK Namawardana, WTMAPK Wanninayake, KMDC Jayathilaka, RP Wijesundera, W Siripala, Fabrication of P3HT/PCBM Inverted Solar Cells with ZnO electron transport layer, Sri Lankan Journal of Physics, 22(1), pp.40–49 (2021)
KMDC Jayathilaka, W Siripala, JKDS Jayanetti, Electrodeposition of n-type, p-type and p-n homojunction cuprous oxide thin films, Sri Lankan Journal of Physics, 9, 35-46 (2008)

Papers of Conference Proceedings

S. B. Kafi, B. H. Gunaratne, K. M. D. C. Jayathilaka and R. P. Wijesundera, Optimization of growth parameters of electrodeposited tin oxide thin films for PV applications, University of Kelaniya International Conference on Applied and Pure Sciences (ICAPS 2023), 191-197 (2023)
FSB Kafi, SAAB Thejasiri, RP Wijesundera and W Siripala, Thin film cuprous oxide homojunction photoelectrode for water splitting, University of Kelaniya International Proceedings of Multidisciplinary Research and Applications (Special Issue - ICAPS 2021), 1, 29-35 (2021)
DGKK Namawardana, RM Geethanjana Wanigasekara, WTMAPK Wanninayake, KMDC Jayathilaka, RP Wijesundera, W Siripala, Fabrication of P3HT:PCBM Inverted Organic Solar Cells, Proc. 37th Tech. Sess. Inst. Phys., Sri Lanka, 54-61 (2021)
WTRS Fernando, KMDC Jayathilaka, RP Wijesundera and W Siripala, Growth of ZnO thin films on Mo substrate for PV applications, Proc. 37th Tech. Sess. Inst. Phys., Sri Lanka, 62-69 (2021)
WTRS Fernando, KMDC Jayathilaka, RP Wijesundera and W Siripala, Growth of CZTS thin films by a single step electrodepostion technique for PV, Proc. 35th Tech. Sess. Inst. Phys., Sri Lanka, 47-55 (2019)
WTRS Fernando, KMDC Jayathilekea, RP Wijesundera and W Siripala, Growth of Cu2ZnSnS4 for solar cell applications, Solar Asia 2018, Proc. Inte. Conf. (Solar Asia 2018), Kandy, Sri Lanka, pp. 46-50 (2018)
WTRS Fernando, KMDC Jayathilaka, RP Wijesundera and W Siripala, Growth of p-type CZTS nano rod thin films for PV applications, GloriaScientiam – Golden Jubilee Commemorative Volume, Faculty of Science, University of Kelaniya, Chapter 40: pp 471 – 480 (2017)
WTRS Fernando, KMDC Jayathilekea, RP Wijesundera and W Siripala, Growth of CuZnS thin films for PV applications, Proc. 33rd Tech. Sess. Inst. Phys., Sri Lanka, pp. 12-18 (2017)
KAM Jeewanthi, RP Wijesundara and HH Sumathipala, Study of dielectric properties of indigenous oils as a possible alternative liquid for mineral oils, Proc. 33rd Tech. Sess. Inst. Phys., Sri Lanka, pp. 19-23 (2017)
KDRN Kalubowila, RP Wijesundera and W Siripala, Electrodeposited CuO/Cu2O heterojunction for PV applications, Proc. 31st Tech. Sess. Inst. Phys., Sri Lanka, pp. 69-75 (2015)
KDRN Kalubowila, RP Wijesundera and W Siripala, Electrodeposited (Cu2O)1-x(CuO)x/Cu2O heterojunction solar cell, Proc. 30th Tech. Sess. Inst. Phys., Sri Lanka, pp. 10-18 (2014)
LKADDS Gunawardhana, RP Wijesundera and W Siripala, Fabrication of an efficient Cu2O homojunction by electrodeposition technique for solar cell applications, Proc. 30th Tech. Sess. Inst. Phys., Sri Lanka, pp. 1-9 (2014)
KM Kumarasiri, RP Wijesundera and UK Abeywarna, Investigation of the Peltier Cooling Effect Using Low Cost n-Cu2O and p-Cu2S Semiconductors, Proc. 28th Tech. Sess. Inst. Phys., Sri Lanka, pp. 71-76 (2012)
RP Wijesundera and M Hidaka, Fabrication of CuO/Cu2O Heterojunction and Its Local Structural Characterization, Proc. Inte. Conf. (Solar Asia 2011), Kandy, Sri Lanka, pp. 105-111, (2011)
RP Wijesundera, NKAC Kodiweera, W Siripala, and R Garuthara, Electronic Band Gap States in Electrodeposited Cuprous Oxide Semiconductors, Proc. 20th Tech. Sess. Inst. Phys., Sri Lanka, 75-80 (2004)
RP Wijesundera, PK Kapila Susantha, JRP Jayakody, W Siripala, Ti/Cu2O Photoelectrodes in a Photoelectrolytic Solar Cell, Proc. 19th Tech. Sess. Inst. Phys., Sri Lanka, pp. 59-64 (2003)
RP Wijesundara, NP Gunatunga, W Siripala, KD Jayasuriya, SRD Kalingamudali, KTL De Silva and JKDS Jayanetti, Fabrication and Characterisation of CuInS2/ZnSe/Metal Structures for Solar Cell Applications, Proc. 16th Tech. Sess. Inst. Phys., Sri Lanka, pp. 63-70 (2000)
RP Wijesundara, MP Nadesalingam, W Siripala, KD Jayasuriya, SRD Kalingamudali, JKDS Jayanetti and KTL De Silva, A study of CuInS2 thin films for photovoltaic applications, Proc. 15th Tech. Sess. Inst. Phys., Sri Lanka, pp. 52-58 (1999)
RP Wijesundara, W Siripala, KD Jayasuriya, SRD Kalingamudali, KTL De Silva, JKDS Jayanetti, AP Samantilleke and IM Dharmadasa, Growth and characterisation of CuInS2 thin films, Proc. Wkshp. Low Cost Elect. Mat. and Solar Cells, Peradeniya, Sri Lanka, pp. 40-45 (1999)
RP Wijesundara, SRD Kalingamudali and KD Jayasuriya, Construction of a near ideal nanoammeter, Proc. 14th Tech. Sess. Inst. Phys., Sri Lanka, pp. 50-53 (1998)
W Siripala, RP Wijesundera, LDRD Perera, KD Jayasuriya and KTL De Silva, Study of sulphidation of electrodeposited Cu2O thin films for solar cell applications, Proc. Wkshp. on Renewable Energy Sources, Colombo, pp 89-94 (1998)
KMDC Jayathilaka, LSR Kumara, CH Song, K Ohara, S Kohara, O Sakata, W Siripala, JKDS Jayanetti, Efficiency Improved Electrodeposited Ti/Cl-doped n-Cu₂O/p-Cu₂O/Au Homojunction Solar Cells, Proc. Solar Asia Int. Conf. National Institute of Fundamental Studies, Kandy, Sri Lanka, pp. 8-14 (2018)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Efficiency improvement of cuprous oxide based solar cells by Cl doping, Solar Asia, CIUM, University of Malaya, Kuala Lumpur, Malaysia, pp. 92-96 (2013)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Substrate effect on photocurrent enhancement of electrodeposited n-type Cu₂O thin films, Proceedings of the Annual Research Symposium, University of Colombo, Sri Lanka, 279-282 (2012)
KMDC Jayathilaka, W Siripala, JKDS Jayanetti, Sulphidation of electrodeposited nanocrystalline cuprous oxide thin films for solar energy applications, Solar Asia Int. Conf., Institute of Fundamental Studies, Kandy, Sri Lanka, pp. 112-119 (2011)
KMDC Jayathilaka, W Siripala, JKDS Jayanetti, Electrodeposited nano-crystalline cuprous oxide thin films for solar energy applications, Proceedings of the Postgraduate Symposium, University of Colombo, pp. 306-310 (2011)
PAP Janantha, LNL Perera, KMDC Jayathilaka, JKDS Jayanetti, DP Dissanayaka, WP Siripala, Use of Cu₂O microcrystalline thin film semiconductors for gas sensing, Proc. 25^th Sess. Inst. Phys., Sri Lanka, pp. 70-76 (2009)
KMDC Jayathilaka, W Siripala, JKDS Jayanetti, Donor and Accepter Density Variation in Electrodeposited Cuprous Oxide thin films, Proc. 23^rd Sess. Inst. Phys., Sri Lanka, pp. 55-59 (2007)

Abstracts of Conference Proceedings

WTRS Fernando, KMDC Jayathilaka, RP Wijesundera, W Siripala, Growth of CZTS thin films by sequential and single step electrodeposition techniques, Second Annual Research Symposium of the NRC, 46 (2023)
FSB Kafi, KMDC Jayathileka, RP Wijesundera, W. Siripala, Development of Cu2O homojunction solar cell by deduction of interfacial discontinuities, Second Annual Research Symposium of the NRC, 47 (2023)
KLAC Lakshan, HH Sumathipala and LBDRP Wijesundara, onic conductivity of novel solid polymer electrolyte based on polyethylene oxide (PEO) and magnesium pyrophosphate (Mg2P2O7), University of Kelaniya International Conference on Applied and Pure Sciences (ICAPS 2023), 182 (2023)
BRL Anjalika, KMDC Jayathilaka, ALAK Ranaweera, LBDRP Wijesundera and SRD Kalingamudali, Fabrication and characterization of electrodeposited nano structured copper oxide-based supercapacitors, University of Kelaniya International Conference on Applied and Pure Sciences (ICAPS 2023), 77 (2023)
MDPA Shakya, KMDC Jayathilaka, WTMPK Wanninayake, R Kumara, WP Siripala and RP Wijesundera, Photocurrent improvement in grape dye sensitized solar cells by in cooperation of electrodeposited Cu particles in TiO2 photoanode, University of Kelaniya International Conference on Applied and Pure Sciences (ICAPS 2023), 72 (2023)
RP Wijesundera, SAAB Thejasiri, FSB Kafi, W Siripala, Enhanced efficiency in electrodeposited cuprous oxide thin film homojunction solar cells, SPAST Abstracts (2021)
HE Wijesooriya, JA Seneviratne, KMDC Jayathilaka and RP Wijesundera, Use of cuprous oxide thin film semiconductors for dissolved oxygen sensing: A preliminary study, International Conference on Applied and Pure Sciences 2021 (ICAPS 2021), University of Kelaniya, Sri Lanka, PO-15 (2021)
MDPA Shakya, KMDC Jayathilaka, RP Wijesundera and WTMPK Wanninayake, Effect of Annealing Temperature on the Wetting Properties of Electrodeposited Cu2O, International Conference on Applied and Pure Sciences 2021 (ICAPS 2021), University of Kelaniya, Sri Lanka, PO-17 (2021)
WTRS Fernando, KMDC Jayathileka, W Siripala, RP Wijesundara, Enhancement of photoactive properties of CZTS/Cu2O solar cell by annealing, Young Scientists’ Conference on Multidisciplinary Research (YSCMR), 75 (2021)
SAAB Thejasiri, FSB Kafi, RP Wijesundera and W Siripala, Enhancement of photovoltaic performance of Cu2O homojunction by introducing a ZnO buffer layer, International Conference on Applied and Pure Sciences 2020 (ICAPS 2020), University of Kelaniya, Sri Lanka, 39 (2020)
WTRS Fernando, KMDC Jayathilaka, RP Wijesundera and W Siripala, Comparison of the properties of CZTS semiconductor films grown by sequential and single step electrodeposition techniques, International Conference on Applied and Pure Sciences 2020 (ICAPS 2020), University of Kelaniya, Sri Lanka, 50 (2020)
DGKK Namawardana, G Wanigasekara, WTMAPK Wanninayake, KMDC Jayathilaka, RP Wijesunderaand, W Siripala, Fabrication of inverted polymer based organic solar cells on stainless steel substrate, International Conference on Applied and Pure Sciences 2020 (ICAPS 2020), University of Kelaniya, Sri Lanka, 51 (2020)
G Wanigasekara, DGKK Namawardana, WTMAPK Wanninayake, KMDC Jayathilaka, RP Wijesundera and W Siripala, Effects of ZnO on inverted P3HT:PCBMbulk heterojunction solar cells, International Conference on Applied and Pure Sciences 2020 (ICAPS 2020), University of Kelaniya, Sri Lanka, 52 (2020)
SAAB Thejasiri, FSB Kafi, RP Wijesundera, W Siripala, Effect of surface modification on cuprous oxide homojunction solar cells fabricated on titanium substrates, 20th International Postgraduate Research Conference, University of Kelaniya, Sri Lanka, (IPRC-2019), (2019)
SRNT Jayarathna, WTMAPK Wanninayake, KMDC Jayathilake and RP Wijesundara, Fabrication of efficient dye –sensitized solar cell using the dye of Chinese rain bell flower, 4th International Research Symposium on pure and Applied Sciences (IRSPAS-2019), University of Kelaniya, Sri Lanka, 95 (2019)
DSV Kulathilaka, Aruna Wanninayake, KMDC Jayathilaka and RP Wijesundera, Fabrication of natural dye sensitized solar cells with eastern black nightshade extract, 4th International Research Symposium on pure and Applied Sciences (IRSPAS-2019), University of Kelaniya, Sri Lanka, 96 (2019)
Geethanjana Wanigasekara, KMDC Jayathilaka, WTMAPK Wanninayake, RP Wijesundera and W Siripala, Fabrication of P3HT:PCBM based organic solar cell, 4th International Research Symposium on pure and Applied Sciences (IRSPAS-2019), University of Kelaniya, Sri Lanka, 99 (2019)
SRNT Jayarathna, KMDC Jayathilaka, WTMAPK Wanninayake, LBDRP Wijesundera, Fabrication of Titanium Dioxide –Based Solar Cell Using Black Grapes, 74th Annual Sess., SLAAS (2018)
WGC Kumarage, RP Wijesundera, VA Seneviratne, CP Jayalath and BS Dassanayake, A Study on cheap, environmentally friendly alternative for CdCl2 activation of CdS films: MgCl2, Sri Lanka-Taiwan Bilateral Symposium on Energy, Environment and Nanotechnology, 01st - 03rd June 2018, Taiwan, 22 (2018)
WTRS Fernando, KMDC Jayathilaka, RP Wijesundara and W Siripala, “Fabrication of CZTS/Cu2O solar cell”, International Postgraduate Research Conference, University of Kelaniya, Sri Lanka, (IPRC-2018)
WTRS Fernando, KMDC Jayathileka, RP Wijesundera and W Siripala "Growth of photoactive Cu2ZnSnS4 by single step electrodeposition,” International Research Symposium on pure and Applied Science, University of Kelaniya, Sri Lanka 26th October 2018 (IRSPAS-2018), 105 (2018)
FSB Kafi, KMDC Jayathileke, LBDRP Wijesundera, W Siripala, Electrodeposited homojunction Cu2O solar cell on FTO substrate, International Research Symposium on pure and Applied Science, University of Kelaniya, Sri Lanka 26th October 2018, (IRSPAS-2018), 106 (2018)
FSB Kafi, KMDC Jayathileke, RP Wijesundera, W Siripala, Comparison of the surface properties of post-treated p-Cu¬2O/Au Schottky junction, Proc. 73rd SLAAS Scientific Session, 86 (2017)

FSB Kafi, KMDC Jayathileke, RP Wijesundera, W Siripala, Fabrication of Cu2O homojunction thin films for photovoltaic applications, Proc. International Research Symposium Pure and Applied Sciences 2017, University of Kelaniya, 103 (2017)
WTRS Fernando, KMDC Jayathilaka, RP Wijesundera and W Siripala, Optimization of growth parameters of photoactive CZTS, International Research Symposium Pure and Applied Sciences 2017, University of Kelaniya, 100 (2017)
GKUP Gajanayake, UK Abeywarna, LBDRP Wijesundera, Investigation of electrically insulating and thermally conductive materials for a Peltier module with n-Cu2O and p-Cu2O electrodeposited semiconductors, International Research Symposium Pure and Applied Sciences 2017, University of Kelaniya, 101 (2017)
AGT De Silva, KMDC Jayathilaka, RP Wijesundera and W Siripala, Photoelectolysis of water usng electrodeposited Cu2O electrodes, International Research Symposium Pure and Applied Sciences 2017, University of Kelaniya, 102 (2017)
WGC Kumarage, RP Wijesundera, VA Seneviratne, CP Jayalath and BS Dassanayake, Optical and electrical properties of EDTA assisted CdS thin films, Proceedings of the Postgraduate Institute of Science Reserch Congress, Sri Lanka, Abstract No:60 (2016)
WGC Kumarage, RP Wijesundara, VA Seneviratne, CP Jayalath and BS Dassanayake, Optoelectronic Properties of Cd1−xZnxS Thin Films Grown by Chemical Bath Deposition, ICSBE, 16th- 18th December 2016, Sri Lanka, 128 (2016)
WGC Kumarage, RP Wijesundara, VA Seneviratne, CP Jayalath and B Dassanayake, Fabrication of Seed Assisted CdS and Properties, iPURSE, 4th - 5th November 2016, Sri Lanka, 328 (2016)
FSB Kafi, KMDC Jayathileka, RP Wijesundera and W Siripala, Improvement of p-Cu2O/Au interface by controlling the pH of the electrodeposition bath of Cu2O, International Research Symposium on Pure and Applied Sciences, 2016, Faculty of Science, University of Kelaniya, Sri Lanka, 43 (2016)
WTRS Fernando, KMDC Jayathilekea, RP Wijesundera and W Siripala, Growth of CuZnS thin films by sequential electrodeposition and sulphurisation, International Research Symposium on Pure and Applied Sciences, 2016, Faculty of Science, University of Kelaniya, Sri Lanka, 42 (2016)
RP Wijesundera, FSB Kafi, KMDC Jayathileka and W Siripala, Growth of electrodeposited n-Cu2O thin films with tunable band edge position, International Postgraduate Research Conference – 2016, Faculty of Graduate Studies, University of Kelaniya, Sri Lanka, 159 (2016)
HTN Padmini, KMDC Jayathilaka, LS Kumara, S Kohara, O Sakata, RP Wijesundera, Optimisation of photoactive properties of ZnO by electrodeposition, 9th International Research Conference, KDU, Sri Lanka, 199 (2016)

FSB Kafi, KMDC Jayathilekea, RP Wijesundera and W Siripala, Observation of interface modification of electrodeposited p-Cu2O thin films in an aqueous electrolyte, International Postgraduate Research Conference, University of Kelaniya, 209 (2015)
KDRN Kalubowila, RP Wijesundera and W Siripala, Fabrication of CuInS2/Cu2O heterojunction using electrodeposition technique to use in photovoltaic applications, 71st Annual Sess., SLAAS, 63 (2015)
LKADDS Gunawardhana, RP Wijesundera and W Siripala, Cu2O homojunction solar cell, Proc. HETC Symposium - 2014, Sri Lanka, 130 (2014)
LKADDS Gunawardhana, RP Wijesundera and W Siripala, Fabrication of Cu2O Homojunction Solar Cell, Proceedings of 14th Annual Research Symposium 2013, University of Kelaniya, 92 (2013)
KDRN Kalubowila, RP Wijesundera and W Siripala, Improved n-type behaviour of Cu2O by successive electrodeposition of Cu and Cu2O, Proceedings of 14th Annual Research Symposium 2013, University of Kelaniya, 94 (2013)
LKADDS Gunawardhana, RP Wijesundera and W Siripala, Improved n-type photoconductive Cu2O thin films, 69th Annual Sess., SLAAS, 129 (2013)
KDRN Kalubowila, RP Wijesundera and W Siripala, Growth of (Cu2O)1-x(CuO)x thin films for PV applications, 69th Annual Sess., SLAAS, 130 (2013)
Nandana Jayashantha, RP Wijesundera and KD Jayasuriya, Electrical Batteries from Plantain Pith, Proc. 12th Annual Research Symp. 2011, University of Kelaniya, 71 (2011)
RP Wijesundera and W Siripala, Photoelectrolysis of water using double-semiconductor electrodes, Proc. Annual Research Symp. 2003, University of Kelaniya, 59 (2003)
UK Abeywarna, EPPC Gunawardana, DN Bopege, R Rajapaksha, RP Wijesundera and W Siripala, A study on Peltier effect with n-type cuprous oxide and p-type cuprous sulphide semiconductors, Proc. Annual Research Symp. 2003, University of Kelaniya, 58 (2003)
RP Wijesundera, W Siripala and R Garuthara, A Photoluminescence Study on CuInS2 Thin Films Prepared by the Sequential Deposition Technique, Proc. Annual Research Symp. 2001, University of Kelaniya, 43 (2001)
RP Wijesundara, W Siripala, KD Jayasuriya and SRD Kalingamudali, Sulphurisation of sequentially electrodeposited Cu-In alloy for the preparation of semiconductor thin films, Proc. Annual Research Symp. 2000, University of Kelaniya, 32 (2000)
RP Wijesundara, W Siripala, KD Jayasuriya and SRD Kalingamudali, I-V and C-V characterization of semiconductor thin films, Proc. Annual Research Symp. 2000, University of Kelaniya, 31 (2000)

RP Wijesundara, W Siripala, KD Jayasuriya, SRD Kalingamudali, KTL De Silva, and JKDS Jayanetti, Photoelectrochemical Characterisation of ZnSe coated Copper Indium Sulphide Thin Film Electrodes, Proc. 55th Annual Sess., SLAAS, 203 (1999)
Siripala and A.R.M.S. Gunaratne, Electrical Conductivity Measurements on Cu2O Films, Proc. 42nd Annual Sess. SLAAS (1986).
Siripala and K.P. Kumara, Origin of the n-type Conductivity in Electrodeposited Cuprous Oxide Films, Proc. 43rd Annual Sess. Sri Lanka Association for the Advancement of Science SLAAS (1987).
P.Kumara and W.Siripala, Cu2O/Cu2x Thin Film Solar Cells Using Electrodeposited Cu2O Films, Proc. 43rd Annual Sess. Sri Lanka Association for the Advancement of Science SLAAS (1988).
R.D. Kalingamudali and W. Siripala, Thermally Stimulated Current Voltage Characteristics of Cu2O/CuxS Diode, Proc 44th Annual Sess. Sri Lanka Association for the Advancement of Science SLAAS (1988).
Siripala and K.P. Kumara, Cu2O/CuxS Heterojunction Thin Film Solar Cell, Proc. of 1st International Symposium on Solid State Physics, Solid State Physics 1, Nova Sci. Pub., N.Y. (1989), M.A.K.L. Dissanayake, R. Attele and K. Tennakone Eds.
D.R.D. Perera, W. Siripala and K.T.L. De Silva, Electrochemical study of electrodeposition of Cuprous Oxide, Proc 51st Annual Sess. Sri Lanka Association for the Advancement of Science, SLAAS (1995).
D. Chitrani, K.T.L.De Silva, J.K.D.S. Jayanetti and W. Siripala, Growth and Characterization of Copper Indium Diselenide, 12th Technical Sess. of Institute of Physics, Sri Lanka (1996).
D.R.D.Perera, W.Siripala, K.T.L.De Silva and J.K.D.S. Jayanetti, Type Conversion of Electrodeposited Cuprous Oxide, 12th Technical Sess. of Institute of Physics, Sri Lanka (1996).
D.R.D. Perera, W. Siripala, S.R.D. Kalingamudali, J.K.D.S. Jayanetti and K.T.L. De Silva, IV characteristics of ITO/Cu2O/metal junctions, 52nd Annual Sess. Sri Lanka Association for the Advancement of Science ,SLAAS (1996).
D.R.D.Perera, W. Siripala, K.D. Jayasuriya, K.T.L. De Silva, J.K.D.S. Jayanetti and I.M. Dharamadasa, Electrodeposited Cuprous Oxide for Solar cell Applications, Proc. of the Workshop on Low Cost Electronic Materials and Solar Cells, Colombo, Sri Lanka (1997).
A.A. Priyantha, B.D. Chithrani, K.T.L. de Silva, J.K.D.S. Jayanetti and W. Siripala, Study of Annealing Effects of Electrodeposited CuInSe2 films,Proc. of the Workshop on Low Cost Electronic Materials and Solar Cells, Colombo (1997).
D.R.D. Perera, R. Wijesundara, W. Siripala, K.D. Jayasuriya, K.T.L. De Silva and J.K.D.S. Jayanetti, ITO/n-Cu2O/p-CuxS Thin Film Solar Cell, 53rd Annual Sess. SLAAS (1997).
W Siripala, Trends in Solar Energy Applications for Future Energy Needs, Proc. Part II, 51 st Annual Sess., Sri Lanka Association for the Advancement of Science, (1995) 65.
LDRD Perera, RP Wijesundera, W Siripala, KD Jayasuriya, KTL De Silva and JKDS Jayanetti, ITO/n-Cu2O/p-CuxS Thin Film Solar Cell, Proc. of 53rd Annual Sess., SLAAS, 290 (1997)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Electrodeposited sulfur passivated cuprous oxide thin films for solar energy applications, Proceedings of the National Development through Research and Innovation HETC Symposium, Sri Lanka, p. 135 (2014)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Fabrication and characterization of electrodeposited CuO/Cu₂O hetrojunction solar cell, Proceedings of the 69^th SLASS Technical Sessions, Sri Lanka, 131 (2013)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Enhancement of the photovoltaic conversion efficiency of electrodeposited p-n homojunction cuprous oxide solar cells by surface passivation, Proceedings of the 69^th SLASS Technical Sessions, Sri Lanka, 132, (2013)
KMDC Jayathilaka, LSR Kumara, V Kapaklis, W Siripala, JKDS Jayanetti, Efficiency improvement of electrodeposited p-n homojunction cuprous oxide solar cells by surface passivation and annealing, Proceedings of the 7^th Asia - Oceania Forum for Synchrotron Radiation Research (AOFSRR), Japan, 51, (2013)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Electrodeposition of Cl doped cuprous oxide thin films on Ti substrates for solar cells, Proceedings of the 4^thInsym-SUSL, Belihuloya, Sri Lanka, 90, (2013)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Photocurrent enhancement of electrodeposited Cl doped cuprous oxide thin films on Ti substrates by annealing, Proceedings of the 68^thSLASS Technical Sessions, Sri Lanka, 57, (2012)
KND Bandara, KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Electrodeposited nano-crystalline cuprous oxide thin films for gas sensing applications, Proceedings of the 68^th SLASS Technical Sessions, Sri Lanka, 56, (2012)
KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Sulphidation of electrodeposited Cl doped cuprous oxide thin films for solar energy applications, Proceedings of the International Conference on Advanced Materials, Science and Engineering, Colombo, Sri Lanka, 60, (2012)
KMDC Jayathilaka, W Siripala, WTMAPK Wanninayake, JKDS Jayanetti, Fabrication and characterization of Eectrodeposited nanocrystalline/ microcrystalline Cuprous Oxide thin films solar cells, Proceedings of the 9^th Annual Research Symposium, University of Kelaniya, Sri Lanka, 123, (2008)
KMDC Jayathilaka, W Siripala, JKDS Jayanetti, Electrodepostion of nanocrystalline Cuprous Oxide thin films for solar energy application, Proceedings of the 8^th Annual Research Symposium, University of Kelaniya, Sri Lanka, (2007)
KMDC Jayathilaka, W Siripala, JKDS Jayanetti, Fabrication of an electrodeposited p-n junction photoelectrode for solar energy applications. Proceedings of the Annual Research Symposium, Faculty of Graduate studies, University of Kelaniya, Sri Lanka, 69, (2006)

Inventions

Invention of the n-type Cu₂O
Siripala and J.R.P. Jayakody, Observation of n-type Photoconductivty in Electrodeposited Copper Oxide Film Electrodes in a Photoelectrochemical cell, Solar
Energy Materials 14 (1986) 23-27

Invention of the n-Cu₂O/p-Cu₂O homojunction solar cell
KMDC Jayathilaka, W Siripala, JKDS Jayanetti, Electrodeposition of n-type, p-type and p-n homojunction cuprous oxide thin films, Sri Lankan Journal of Physics 9, 35-46 (2008)

Sulphidation treatment of Cu₂O
RP Wijesundera, LDRD Perera, KD Jayasuriya, W Siripala, KTL De Silva, AP Samanthilleke and IM Dharmadasa, Sulphidation of electrodeposited Cuprous Oxide thin films for Photovoltaic Applications, Solar Energy Materials and Solar Cells 61, pp 277-286 (2000)

KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Surface treatment of electrodeposited n-type Cu2O thin films for applications in Cu2O based devices, Physica Status Solidi RRL, 8(6), 592-595 (2014)

KMDC Jayathilaka, V Kapaklis, W Siripala, JKDS Jayanetti, Ammonium Sulfide Surface Treatment of Electrodeposited p-Type Cuprous Oxide Thin Films, Electronic Materials Letters 10(2), 379-382 (2014)

Invention of the n-Cu₂O/p-Cu₂O homojunction solar cell
RP Wijesundera, LKADDS Gunawardhana and W Siripala, Electrodeposited Cu2O homojunction solar cells: Fabrication of a cell of high short circuit photocurrent, Solar Energy Materials and Solar Cells, 157, pp. 881–886 (2016)

The record high Jsc value for Cu₂O homojunction solar cells
RP Wijesundera, LKADDS Gunawardhana and W Siripala, Electrodeposited Cu2O homojunction solar cells: Fabrication of a cell of high short circuit photocurrent, Solar Energy Materials and Solar Cells, 157, pp. 881–886 (2016)

The record high efficiency value for Cu₂O homojunction solar cells
C Jayathilaka, LSR Kumara, K Ohara, C Song, S Kohara, O Sakata, W Siripala, S Jayanetti, Enhancement of Solar Cell Performance of Electrodeposited Ti/n-Cu2O/p-Cu2O/Au Homojunction Solar Cells by Interface and Surface Modification, Crystals, 10 (7), 609 (2020)

Invention of the electrodeposited CuO/Cu₂O homojunction solar cell
RP Wijesundera, Fabrication of CuO/Cu2O heterojunction using electrodeposition technique for solar cell applications, Semi. Sci. Technol., 25(4), 045015, pp. 1-5 (2010)

Research collaborations

Grants received

Photoelectrochemical Solar cells, University of Kelaniya, Sri Lanka (1985)– Principal Investigator.
Photoelectrochemical Solar cells, Third World Academy of Science (TWAS),Italy (1986)- Principal Investigator.
Low Cost Photovoltaic Solar Cells, Natural Resources, Energy and Science Authority (NARESA) of Sri Lanka (1988) - Principal Investigator.
Electrodeposited Cuprous Oxide for Solar cell Applications, Natural Resources, Energy and Science Authority (NARESA) of Sri Lanka (1998)- Principal Investigator.
Research in Semiconductor Physics and Development of Low Cost Solar Cells, University of Kelaniya , Sri Lanka (1999)- Principal Investigator.
Nanocrystalline Cuprous Oxide for Solar Energy Applications, National Science Foundation (NSF), Sri Lanka (2005)- Principal Investigator.
Electrodeposited Cuprous Oxide for Low Cost Solar Cell Applications, HETC Project, Ministry of Higher Education, Sri Lanka (2010) - Co- Investigator.
Development of an Environmentally Friendly Low Solar Cell Device, HETC Project, Ministry of Higher Education, Sri Lanka (2012)- Co-Investigator.
Development of electrodeposited Cu2O based solar cell devices, National Research Council (NRC), Sri Lanka (2012)- Co-Investigator.

Year	Awarded Body	Project	Duration
2011	National Research Council	Research and development of Cu₂O based (CuO)_x(Cu₂O)_1-x/Cu₂O and CuInS₂/Cu₂O heterojucnction thin film solar cells using electrodeposition technique (Principal Investigator)	3 Years
2012	HETC Window 3	Development of Environmentally Friendly Low Cost Solar Cells (Principal Investigator)	2 Years
2015	National Research Council	Research and development of Cu₂ZnSnS₄ and Cu₂O based low cost thin film solar cell devices using electrodeposition technique (Principal Investigator)	2 Years
2018	National Science Foundation	Optimization of donor and acceptor materials for fabrication of efficient organic solar cell (Principal Investigator)	2 Years
2019	National Research Council	Development of an environmentally friendly high efficient low cost Cu₂O homojunction solar cell (Principal Investigator)	2 Years

Ongoing research

Development of highly efficient Cu₂O homojunction solar cells

We are studding the development of Cu₂O homojunction solar cell by enhancing the optoelectrical properties of both n-Cu₂O and p-Cu₂O and interfacial properties of the Cu₂O homojunction device. Electrodeposition technique is used to fabricate the device and n-Cu₂O and p-Cu₂O thin films are grown in acetate and lactate bath respectively. Currently, developed homojunction solar cell structure of Ti/n-Cu2O/p-Cu2O/Au produced Voc of 460 mV, Jsc of 12.99 mA/cm², FF of 42% and η = 2.51%, under AM 1.5 artificial illumination. This is the record high Jsc value for Cu₂O homojunction solar cells, but V_oc and FF are still poor. Currently, we are working to improve the Voc and FF of the device.

RP Wijesundera, LKADDS Gunawardhana and W Siripala, Electrodeposited Cu2O homojunction solar cells: Fabrication of a cell of high short circuit photocurrent, Solar Energy Materials and Solar Cells, 157, pp. 881–886 (2016)

Growth of CZTS for CZTS/CdS solar cell applications

CZTS is a relatively new and promising semiconductor material suitable for photovoltaic applications due to its favourable optoelectronic properties. We are focusing to grow CZTS thin films for fabrication of CZTS/CdS solar cells. using electrodeposition technique. Currently CZTS films are grown using sequential and single-step electrodeposition techniques.

WTRS Fernando, KMDC Jayathilaka, RP Wijesundera and W Siripala, A Comparative Study: Sequentially and Single Step Electrodeposited CZTS Thin Films, Phys. Status Solidi A, 202200231 (2022)

Wettability Research

Our wettability research focuses on discovering the fascinating physics governing the wetting phenomena of electrodeposited semiconducting materials. By investigating the wettability of electrodeposited materials, we aim to unlock a deeper understanding of their surface interactions with liquids. Our focus on wettability stems from its crucial role in various industrial processes, ranging from coatings to energy storage. Moreover, in collaboration with industries, we strive to implement these developed technologies in practical applications, such as sensing, printing, architecture, and biomedicine.

Hydrogen Fuel from Solar Photocatalytic Water Splitting

Hydrogen is considered as the fuel of the 21st century and already the hydrogen economy has been set in progress. Hydrogen is the fuel having the highest energy density. The main objective of this research is to develop a device which can split water into hydrogen and oxygen efficiently using solar energy. This will allow producing hydrogen fuel that can be stored, transported and use when and where needed. For this purpose, in this research project, use of ultra low cost electrodeposited cuprous thin film electrodes will be envisaged.

FSB Kafi, RP Wijesundera, W Siripala, Enhanced Photoelectrochemical Water Splitting by Surface Modified Electrodeposited n‐Cu2O Thin Films, Phys. Status Solidi A, 2000330, (2020)

Development of TiO₂based natural Dye Sensitized Solar Cells

Development of P3HT/PCBM Organic Solar Cells

Polymer based organic solar cells (OSCs) are of tremendous interest as suitable candidates for producing clean and renewable energy in recent years. In this research, development of an efficient P3HT/PCBM organic solar cells is carrying out. Further zinc oxide (ZnO) and cuprous oxide (Cu₂O) are studied as the electron selective transport layer (ESTL) and (PEDOT:PSS) is investigated as the hole transport layer (HTL) for enhancing the photoactive performance of the P3HT/PCBM organic solar cells.

DGK Kalara Namawardana, RM Geethanjana Wanigasekara, WTM Aruna PK Wanninayake, KMD Charith Jayathilaka, Ruwan P Wijesundera, Withana Siripala, Muhammad Imran Malik, Fabrication of inverted organic solar cells on stainless steel substrate with electrodeposited and spin coated ZnO buffer layers, Journal of Polymer Engineering, 42 (3), 233-242 (2022)

Development of low-cost tin oxide thin films for solar cell applications using the method of electrodeposition

Solar energy is one of the useful, abundant, environmentally friendly and efficient source of renewable energy in the world. The conversion of solar energy into electricity using solar cells is clearly an important way, with significant potential to mitigate global warming by lowering the emission of greenhouse gases. The costs of the solar cell system are determined by the overall cost of the technology and the materials used in. The purpose of this project is to develop low-cost environmentally friendly solar cell. Here we use low-cost environmentally friendly tin oxide as a possible semiconducting material to fabricate thin film solar cell using the method of electrodeposition. This project is supported by the University of Kelaniya research grant RP/03/02/05/01/2022.

Low-dimensional metal oxide nanostructures

Our team is delighted to present innovative discoveries regarding the application of Metal Oxide nanostructures in gas sensor technology. Metal Oxide nanostructures exhibit exceptional sensitivity and selectivity towards a variety of gases, including carbon monoxide (CO), nitrogen dioxide (NO₂₎, hydrogen (H₂), methane (CH₄), and volatile organic compounds (VOCs). By exploiting the unique properties of Metal Oxides such as Cu₂O, Fe₃O4, and Co₃O₄ at the nanoscale, our research has uncovered the potential for highly effective and reliable gas sensing devices. Our study not only pushes the boundaries of scientific comprehension but also has practical implications for addressing global challenges and improving quality of life. We welcome collaborations in our efforts to shape the trajectory of nanotechnology and harness the potential of Cu₂O, Fe₃O₄, and Co₃O₄ nanostructures for a sustainable and prosperous future.

Synthes and characterization of CdS thin films

CdS thin films have emerged as a prominent subject of interest within the photovoltaic community due to their notable characteristics, such as wide optical band gap, efficient electron transport properties, and compatibility with economical fabrication methods. Our investigation is centered on exploring the potential of CdS thin films as a crucial element in the development of next-generation photovoltaic devices, specifically Copper Zinc Tin Sulfide (CZTS), with a primary focus on enhancing efficiency, durability, and cost-effectiveness.

Our research initiatives encompass the following areas:

Enhancement of CdS thin film deposition techniques to elevate film quality and ensure uniformity.

Examination of innovative CZTS device architectures and material combinations aimed at enhancing photovoltaic efficiency and bolstering stability.

Exploration of sustainable and environmentally friendly fabrication processes to address concerns associated with the use of CdS.

As we progress in our investigations, we anticipate significant strides in CdS thin film technology, which will contribute to the realization of high-performance, economically viable, and environmentally sustainable photovoltaic devices.

We extend a warm invitation to collaborate with us as we collectively work towards shaping the trajectory of CdS thin films for a sustainable and prosperous future in photovoltaic applications.

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