Inverted perovskite solar cells(PVSCs)have recently made exciting progress,showing high power conversion efciencies(PCEs)of 25%in single-junction devices and 30.5%in silicon/perovskite tandem devices.The hole transpor...Inverted perovskite solar cells(PVSCs)have recently made exciting progress,showing high power conversion efciencies(PCEs)of 25%in single-junction devices and 30.5%in silicon/perovskite tandem devices.The hole transporting material(HTM)in an inverted PVSC plays an important role in determining the device performance,since it not only extracts/transports holes but also afects the growth and crystallization of perovskite flm.Currently,polymer and self-assembled monolayer(SAM)have been considered as two types of most promising HTM candidates for inverted PVSCs owing to their high PCEs,high stability and adaptability to large area devices.In this review,recent encouraging progress of high-performance polymer and SAM-based HTMs is systematically reviewed and summarized,including molecular design strategies and the correlation between molecular structure and device performance.We hope this review can inspire further innovative development of HTMs for wide applications in highly efcient and stable inverted PVSCs and the tandem devices.展开更多
基金support from the National Natural Science Foundation of China(Grant Nos.21975085 and 22175067)excellent Youth Foundation of Hubei Scientifc Committee(No.2021CFA065),the Innovation and Talent Recruitment Base of New Energy Chemistry and Device(No.B21003)+2 种基金while ZZ thanks the fnancial support from the ECS grant(21301319)GRF grant(11306521)the Research Grants Council of Hong Kong,China,and Green Tech Fund(GTF202020164)。
文摘Inverted perovskite solar cells(PVSCs)have recently made exciting progress,showing high power conversion efciencies(PCEs)of 25%in single-junction devices and 30.5%in silicon/perovskite tandem devices.The hole transporting material(HTM)in an inverted PVSC plays an important role in determining the device performance,since it not only extracts/transports holes but also afects the growth and crystallization of perovskite flm.Currently,polymer and self-assembled monolayer(SAM)have been considered as two types of most promising HTM candidates for inverted PVSCs owing to their high PCEs,high stability and adaptability to large area devices.In this review,recent encouraging progress of high-performance polymer and SAM-based HTMs is systematically reviewed and summarized,including molecular design strategies and the correlation between molecular structure and device performance.We hope this review can inspire further innovative development of HTMs for wide applications in highly efcient and stable inverted PVSCs and the tandem devices.
