Pawpaw Leaf And Flame Tree Flower As Natural Sensitizers For Dye Sensitized Solar Cells

Abstract

Natural dyes of anthocyanin extract from flame tree flower (Delonix regia) and chlorophyll extract from pawpaw (Carica papaya) were used as sensitizer to fabricate dye sensitized solar cell (DSSC). The Photoelectrochemical performances of DSSCs obtained from I.V. curve showed conversion efficiency (η) of 80% for the dyes prepared by anthocyanin from flames tree flower, with open-circuit voltage (Voc) of 0.5249 mV, short-circuit current density (Isc) of 44.6191 mA/m2 and Fill factor (FF) of 0.5837. Chlorophyll dyes extract from pawpaw leaf has Voc of 0.5249 mV, Isc of 16.5283 mA/m2. FF of 0.5585 and a conversion efficiency (η) of 0.27 %. The conversion efficiency is 0.23 % for anthocyanin and chlorophyll as the dye mixture at ration 1:2 with Voc Isc and FF of 0.5500 mV, 14.2750 mA/m2 and 0.5206 and a conversion efficiency (η) of 0.26 %.