Analysis of entropy and effect of surface dynamics on photovoltaic performance. Issue 1 (February 2021)

• Record Type: Journal Article
• Authors: Abodunrin, T.J.; Usikalu, M.R.; Emetere, M.E.; Yenus, Z.; Kotsedi, C.; Maaza, M.
• Is Part Of: IOP conference series. Volume 655:Issue 1(2021)
• Publication Date: 2021-02
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/655/1/012056
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: 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.daniellii molecules 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 Isc was 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 Pmax result reported was 36.54 mW with Br − from TiO2 .