Enhancing Efficiency of PEDOT:PSS Based Heterojunction Solar Cell Through Ultra-Thin Oxide
PEDOT:PSS based silicon organic heterojunction solar cells are fabricated with a highest efficiency of 8.92%. It is found that a good quality, ultra-thin oxide layer (~1–2 nm) over the substrate increases adhesion of polymer with the silicon substrate which has positive effect on fill factor of the device. This ultra-thin oxide layer led to an absolute increase of 1.86% in power conversion efficiency of the device. This layer has marginal negative impact on open-circuit voltage of the device.
This work is sponsored by the Council of Scientific and Industrial Research (CSIR)-Young Scientist Awardee (CSIR-YSA) Research Project (Grant Code: OLP 142732; P-81-113). Prashant Singh is thankful to CSIR for the research fellowship.