Long-term stable perovskite solar cells with room temperature processed metal oxide carrier transporters

Abstract

A hydrophobic electron transporter is introduced to enhance the moisture stability of perovskite solar cells. The device retains 76.8% of the initial efficiency after half a year's storage. Physical vapour deposition that is compatible with flexible substrates is used to fabricate charge transporters. This scheme contributes to achieving stable perovskite devices with low time and energy inputs.