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Browsing Science by Author "Wijesundera, R. P."

Browsing Science by Author "Wijesundera, R. P."

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  • A Comparative Study: Sequential and Single-Step-Electrodeposited CZTS Thin Films 
    Fernando, W. T. R. S.; Jayathilaka, K. M. D. C.; Wijesundera, R. P.; Siripala, W. (Physica Status Solidi, 2022)
    CZTS (Cu2ZnSnS4) is a relatively new and promising semiconductor material suitable for photovoltaic applications due to its favorable optoelectronic properties. Of the many techniques available for growing these films, ...
  • Effect of annealing temperature on the wetting properties of electrodeposited Cu2O 
    Shakya, M. D. P. A.; Jayathilaka, K. M. D. C.; Wijesundera, R. P.; Wanninayake, W. T. M. P. K. (Faculty of Science, University of Kelaniya, Sri Lanka, 2021)
    Surface wettability is one of the important physical parameters, which manifests the affinity of a liquid towards a solid phase. In recent years, controlling the wettability of solid surfaces has drawn significant attention ...
  • Effect of Benzene Derivatives as Guest Molecules on Semiconductor Properties of MOF-199 
    Zahadiya, H.; Wijesundera, R. P.; Hettiarachchi, C. V. (ChemistrySelect, 2021)
    A metal organic framework, MOF-199, has been synthesized under solvothermal conditions. Powder X-ray diffraction (PXRD) pattern, Fourier-transform infrared spectra (FT-IR) and scanning electron microscopic images (SEM) ...
  • Fabrication of Cu2O homojunction thin films for photovoltaic applications. 
    Kafi, F. S. B.; Jayathilaka, K.M.D.C.; Wijesundera, R. P.; Siripala, W. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Environmentally friendly cuprous oxide (Cu2O) is an attractive cost effective material for developing photovoltaic devices due to its astounding properties. Interestingly, the fabrication of low cost Cu2O homojunction ...
  • Fabrication of inverted organic solar cells on stainless steel substrate with electrodeposited and spin coated ZnO buffer layers 
    Namawardana, D. G. K. K.; Wanigasekara, R. M. G.; Wanninayake, W. T. M. A. P. K.; Jayathilaka, K. M. D. C.; Wijesundera, R. P.; Siripala, W.; Malik, M. I. (Journal of Polymer Engineering, 2022)
    Polymer based organic solar cells (OSCs) are of tremendous interest as suitable candidates for producing clean and renewable energy in recent years. In this study, inverted OSCs on stainless steel (SS) substrate with ...
  • Fabrication of natural dye sensitized solar cells with eastern black nightshade extract. 
    Kulathilaka, D. S. V.; Wanninayake, W. T. M. A. P. K.; Jayathilaka, K. M. D. C.; Wijesundera, R. P. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
    Energy crisis is one of the biggest challenges for the humans in the world today. Considerable efforts have put by many researchers to tackle this issue. Solar cells represent critical role for extracting energy from the ...
  • Growth and Characterization of Seed‑Assisted, EDTA‑Treated, Chemical Bath‑Deposited CdS 
    Kumarage, W. G. C.; Wijesundera, R. P.; Seneviratne, V. A.; Jayalath, C. P.; Gunawardhana, N.; Kaur, N.; Comini, E.; Dassanayake, B. S. (Journal of Electronic Materials, 2021)
    A simple low-cost method to enhance the electrical properties including open-circuit voltage (VOC), flat-band potential (Vfb) and short-circuit current (ISC) in the photoelectrochemical (PEC) cell of cadmium sulfide (CdS) ...
  • Growth of photoactive Cu2ZnSnS4 by single step electrodeposition 
    Fernando, W. T. R. S.; Jayathileka, K. M. D. C.; Wijesundera, R. P.; Siripala, W. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)
    Cu2ZnSnS4 (CZTS) is a promising candidate for application in low-cost and environmentally-friendly thin film solar cells due to its optoelectronics properties. It is a perfect absorber material for photovoltaic applications ...
  • Molecular tailoring of donor and acceptor materials of organic solar cells for improvement of their optoelectronic properties 
    Ansari, M. A.; Hafeez, A.; Mustafa, M.; Wijesundera, R. P.; Malik, M. I. (Materials Science in Semiconductor Processing, 2022)
    Improvement in the efficiency of organic solar cell (OSC) is one of the hot topics of the modern-day research. Despite environment friendliness and several other practical advantages, the power conversion efficiency (PCE) ...
  • A new Sodium based electrolyte – PEO10NaBrO3 
    Sankalpa, H. A. C.; Sumathipala, H. H.; Wijesundera, R. P. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
    The necessity of new and environmental friendly rechargeable batteries is increasing day by day due to the current technology development and power demand. Hence, efficient and low-cost new electrolyte materials have to ...
  • Optimization of growth parameters of electrodeposited tin oxide thin films for PV Applications 
    Kafi, F. S. B.; Gunaratne, B. H.; Jayathilaka, K. M. D. C.; Wijesundera, R. P. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    Tin oxide (SnO2) is a promising photoactive semiconducting material due to its optoelectronics properties. Even though, growth of SnO2 using the method of electrodeposition is advantageous, it has paved low attention among ...
  • Optimization of growth parameters of photoactive Cu2ZnSnS4. 
    Fernando, W. T. R. S.; Jayathilaka, K. M. D. C.; Wijesundera, R. P.; Siripala, W. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Cu2ZnSnS4 (CZTS) is a promising candidate for application in low-cost and environmentally friendly thin film solar cells due to its optoelectronics properties. It is a perfect absorber material for photovoltaic applications ...
  • Photocurrent improvement in grape dye sensitized solar cells by in cooperation of electrodeposited Cu particles in TiO2 photoanode 
    Shakya, M. D. P. A.; Jayathilaka, K. M. D. C.; Wanninayake, W. T. M. P. K.; Kumara, R.; Siripala, W. P.; Wijesundera, R. P. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    A worldwide effort is currently underway to address the world's energy crisis by finding sustainable energy alternatives. The Dye-Sensitized Solar Cell (DSSC) is a type of solar cell device that functions based on ...
  • Photoelectrolysis of water using electrodeposited Cu2O electrodes. 
    Silva, A. G. T. D.; Jayathilaka, K. M. D. C.; Wijesundera, R. P.; Siripala, W. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    At present, fossil fuels are the main energy contributor of the world’s energy needs but gradually depletion of fossil fuels is heading towards an energy crisis. Therefore it is very important for us to find out a renewable ...
  • Stability of the performance of inverted P3HT/PCBM based organic solar cells 
    Weerasinghe, M. L. A.; Wanninayake, W. T. M. A. P. K.; Jayathilaka, K. M. D. C.; Wijesundera, R. P. (Faculty of Science, University of Kelaniya, Sri Lanka, 2021)
    The organic solar cell extracts and converts solar energy to electricity without environmental hazardous including global warming. Bulk heterojunction (BHJ) structure of the organic solar cells (OSCs) have higher performance ...
  • Thin film cuprous oxide homojunction photoelectrode for water splitting 
    Kafi, F. S. B.; Thejasiri, S. A. A. B.; Wijesundera, R. P.; Siripala, W. (Faculty of Science, University of Kelaniya, Sri Lanka., 2021)
    Employing cuprous oxide (Cu2O) photoelectrodes in photoelectrochemical cells to generate hydrogen by water splitting is beneficial. Conventionally, it is limited in practice because of the well-known reasons of its inherent ...
  • Use of cuprous oxide thin film semiconductors for dissolved oxygen sensing: A preliminary study 
    Wijesooriya, H. E.; Seneviratne, J. A.; Jayathilaka, K. M. D. C.; Wijesundera, R. P. (Faculty of Science, University of Kelaniya, Sri Lanka, 2021)
    Monitoring and maintaining the quality of water is extremely important as it can severely affect the health of humans as well as animals. Dissolved oxygen is one of the key indications of water quality. Cuprous Oxide (Cu2O) ...

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