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A low-cost, vein graphite / tin oxide nanoparticles based composite counter electrode for efficient dye-sensitized solar cells

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dc.contributor.author Dissanayake, M. A. K. L.
dc.contributor.author Kumari, J. M. K. W.
dc.contributor.author Senadeera, G. K. R.
dc.contributor.author Jaseetharan, T.
dc.contributor.author Weerasinghe, Janith
dc.contributor.author Hafeez, Anwar
dc.date.accessioned 2022-08-25T10:24:08Z
dc.date.available 2022-08-25T10:24:08Z
dc.date.issued 2021-11
dc.identifier.citation Materials Science and Engineering: B, 273, September, 2021. en_US
dc.identifier.issn 0921-5107
dc.identifier.uri http://ir.lib.seu.ac.lk/handle/123456789/6225
dc.description.abstract Performance of dye-sensitized solar cells made with a novel, low-cost graphite/SnO2 composite counter electrode is demonstrated. The best performance is exhibited by the composite made with 3.0 ml colloidal SnO2 solution and 0.05 g of graphite powder, sintered at 450 °C. The solar cell efficiency was increased from 6.02% for pure vein graphite to 7.95% for optimized composite graphite/SnO2 electrode, which is 86% of the efficiency of 9.25% obtained for the Pt electrode. This impressive 32% increase in efficiency can be associated with the highly porous nanostructure of the graphite/SnO2 composite providing more reaction sites for triiodide ion reduction as confirmed by Scanning Electron Microscopy, X-ray diffraction, and Raman Spectroscopy. Excellent electrocatalytic activity exhibited by the new counter electrode is confirmed by Electrochemical Impedance Spectroscopy and Cyclic Voltammetry, further supported by Tafel plot analysis. This result provides a cost-effective method to fabricate efficient counter electrodes for dye-sensitized solar cells. en_US
dc.description.uri https://doi.org/10.1016/j.mseb.2021.115440
dc.language.iso en_US en_US
dc.publisher Elsevier Science en_US
dc.subject Dye-sensitized Solar Cells en_US
dc.subject Counter Electrodes en_US
dc.subject Vein Graphite/SnO2 en_US
dc.title A low-cost, vein graphite / tin oxide nanoparticles based composite counter electrode for efficient dye-sensitized solar cells en_US
dc.type Article en_US


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    THESE ARE RESEARCH ARTICLES OF ACADEMIC STAFF, PUBLISHED IN JOURNALS AND PROCEEDINGS ELSWHERE

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