Advance and prospect of metal-organic frameworks for perovskite photovoltaic devices

Abstract

Improving the long-term stability is now one of the most critical challenges in perovskite photovoltaic devices. Recently, metal-organic frameworks (MOFs) with appreciable chemical and moisture stabilities are increasingly used in optoelectronics devices. The introduction of MOFs into perovskite solar cells has paved an innovative way to address the stability issue. Consequently, the combination of perovskite photovoltaics with MOFs has drawn significant research interest in the perovskite community not only due to the enhanced stability but also for the improved photovoltaic performance resulting from the reduced defect concentration, increased charge-carrier transport, and effective energy-band alignment. This review focuses on the development of MOF-assisted perovskite photovoltaic devices and systematically summarizes the recent progress in this new type of optoelectronic device upon the combination of MOFs and perovskite photovoltaics. We have critically analyzed various functions of MOFs, including individual interlayer, a modifier of the interlayer, and MOFs/perovskite heterojunction. Furthermore, we provide a roadmap about the potential challenges and prospects of MOF-based perovskite solar cells. • Metal-organic frameworks (MOFs) with appreciable chemical and moisture stabilities are increasingly used in optoelectronics devices. • The combination of perovskite photovoltaics with MOFs has drawn significant research interest in the perovskite community not only due to the enhanced stability but also for the improved photovoltaic performance. • Various functions of MOFs, including individual interlayer, a modifier of the interlayer, and MOFs/perovskite heterojunction, have been critically analyzed.