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Analysis of entropy and effect of surface dynamics on photovoltaic performance

Abodunrin, T.J and Usikalu, M.R. and Emetere, Moses and Yenus, Z and Kotsedi, Chester and Maaza, M (2021) Analysis of entropy and effect of surface dynamics on photovoltaic performance. In: 4th International Conference on Science and Sustainable Development, 2021, Online.

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We investigate the influences of photoanode on light scattering and absorption in a dye-sensitized solar cell (DSSC). N719 dye on a monolayer anode of TiO2 film and ZnO film, are compared in terms of their photovoltaic conversion efficiency. Doctor blade application and high temperature sintering of photoanode assemblage on indium doped tin oxide glass was adopted for preparation of the two photoanodes. The optical density of the interfacial layer relative to the photogenerated carriers is determined by absorption of ionic electrolytes. The outcome obtained with different photosensitizing effect of organic T.danielliimolecules on DSSCs showed a wide disparity, the highest Voc was recorded with Br- with 500 mV and 79 mV respectively for TiO2 and ZnO photoanode respectively. Three important morphological characterization techniques were used, scanning electron microscopy (SEM) with energy dispersive spectrum (EDS), Electron shell occupancy and Entropy were discussed in detail with respect to their photoelectric performance, the best Iscwas 0.035 mA with Br- on TiO2 attributable to a large optical density, achieved from ratio of area of molecular coverage of nanoparticle film. Scanning electron microscopy (SEM) revealed a structure consisting of direct and ordered paths for photogenerated carriers to the collecting electrodes, the Pmaxresult reported was 36.54 mW with Br- from TiO2.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 15 Sep 2021 13:29
Last Modified: 15 Sep 2021 13:29

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