A perylene diimide based polymer:a dual function interfacial material for efficient perovskite solar cells

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	A perylene diimide based polymer:a dual function interfacial material for efficient perovskite solar cells; A perylene diimide based polymer:a dual function interfacial material for efficient perovskite solar cells
	Fanqi Meng ; Kuan Liu ; Dongmei Li ; Xiaowei Zhan
	2017
关键词	perovskite solar cells interfacial layer trap passivation perovskite solar cells interfacial layer trap passivation
英文摘要	In the past few years, organic-inorganic hybrid perovskite solar cells have received increasing attention.The trap states are one of the key factors limiting further increase of their performance.Therefore it's necessary to develop effective methods to passivate them.In this work, an n-type semiconducting copolymer of perylene diimide and dithienothiophene(PPDIDTT) is used as a dual function interfacial layer to modify the surface of perovskite films in inverted perovskite solar cells.The PPDIDTT layer can remarkably passivate the surface trap states of perovskite through the formation of a Lewis adduct between the under-coordinated Pb in perovskite and S in the dithienothiophene unit of PPDIDTT, and also shows efficient charge extraction and transfer properties.The PPDIDTT modified devices exhibit a maximum power conversion efficiency of 16.5%, superior to that of the control devices without PPDIDTT(15.3%).In addition, the device stability and hysteresis in J–V curves of the modified devices are also improve...; In the past few years, organic-inorganic hybrid perovskite solar cells have received increasing attention.The trap states are one of the key factors limiting further increase of their performance.Therefore it's necessary to develop effective methods to passivate them.In this work, an n-type semiconducting copolymer of perylene diimide and dithienothiophene(PPDIDTT) is used as a dual function interfacial layer to modify the surface of perovskite films in inverted perovskite solar cells.The PPDIDTT layer can; 中国可再生能源学会光化学专业委员会; 1
会议录	第四届新型太阳能电池学术研讨会
语种	英语
内容类型	会议论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/479590]
专题	工学院
推荐引用方式 GB/T 7714	Fanqi Meng,Kuan Liu,Dongmei Li,et al. A perylene diimide based polymer:a dual function interfacial material for efficient perovskite solar cells, A perylene diimide based polymer:a dual function interfacial material for efficient perovskite solar cells[C]. 见:.