Performance and stability gain in zero-dimensional perovskite solar cells after >2 years when hybridized with silicon nanocrystals

Abstract

We report highly stable zero-dimensional (CH₃NH₃)₃Bi₂I₉ photovoltaic cells which demonstrate a 33% increase in performance after 2 years when hybridized with silicon nanocrystals (SiNCs). The natural oxidation of SiNCs is expected to consume radical species and improve the SiNC/(CH₃NH₃)₃Bi₂I₉ interface and electronic coupling whilst also inhibiting defect-induced degradation.