Abstract
In this work, natural dyes based on anthocyanin and chlorophyll pigments were extracted from the powder of P. rubra flowers and S. androgynous leaves respectively and used as sensitizers to fabricate zinc oxide (ZnO) based dye-sensitized solar cell (DSSC). It was observed in optical properties analysis that anthocyanin molecules formed a better bond with ZnO surface compared to chlorophyll. Moreover, anthocyanin sensitized ZnO also exhibits higher increment in nanoparticles diameter compared to that of chlorophyll sensitized ZnO due to the chemical adsorption occurant. The anthocyanin sensitized DSSC also shows better photovoltaic performance with power conversion efficiency (PCE) of 0.038 % compared to chlorophyll sensitized DSSC which exhibited PCE value of 0.014 % due to better charges transfer at the interface between the dye molecule and ZnO nanoparticle.
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