Environmental friendly photosensitizing materials for harvesting solar energy

Dye sensitized solar cells (dscs) are designed for the conversion of solar radiation in to electric energy. in this present work,chlorophyll dye from fresh leaves of azadirachta indica and anthocyanin dye from fresh flowers of ixora coccinea were extracted. the absorption spectra and fourier transform infrared spectra of both the dyes were recorded. the cells were fabricated with the extracted dyes and the j-v curves were recorded under solar simulation of 85mw/cm2.the chlorophyll dye from azadirachta indica leaf exhibited a short circuit current density(jsc) of 0.23 ma/cm2,open circuit voltage(voc) of 467 mv,a fill factor (ff) of 0.392 and a conversion efficiency (η) of 0.05%.comparatively,the anthocyanin dye from ixora coccinea flower exhibited a short circuit current density(jsc) of 0.36 ma/cm2,open circuit voltage(voc) of 476 mv,a fill factor (ff) of 0.519 and a reasonable conversion efficiency (η) of 0.10%.