Fabrication and Characterization of ZnSCubic : P3HT, ZnSHexa : P3HT and ZnSHexa : P3HT: PVA-Ag Bulk Heterojunction Solar Cells

This paper describes the fabrication of P3HT based bulk heterojunction solar cell using ZnS nanoparticles of sphalarite and wurtzite crystal structure and discusses their photovoltaic characteristics. It is found that the device of P3HT : ZnS can give higher V-oc and surface modified wurtzite ZnS is able to give higher V-oc (similar to 1.3 V) as well as higher current density (229.60 mu A/cm(2)) and comparable efficiency (0.032 %). Active layer (P3HT : ZnS) showed a broad optical absorption from 320 nm to 650 nm and it is seen that the absorption intensity increased in the blend than the pristine P3HT.