Hybrid graphene-metal oxide solution processed electron transport layers for large area high-performance organic photovoltaics

Abstract

Solution processed core-shell nano-structures of metal oxide-reduced graphene oxide (RGO) are used as improved electron transport layers (ETL), leading to an enhancement in photocurrent charge transport in PCDTBT:PC70 BM for both single cell and module photovoltaic devices. As a result, the power conversion efficiency for the devices with RGO-metal oxides for ETL increases 8% in single cells and 20% in module devices.

Keywords: charge transport; core/shell nanoparticles; graphene hybrid materials; interface engineering; metal oxides; organic photovoltaics.