A perylene diimide based polymer:a dual function interfacial material for efficient perovskite solar cells
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- 英文论文题名：A perylene diimide based polymer:a dual function interfacial material for efficient perovskite solar cells
- 论文作者：Fanqi Meng ; Kuan Liu ; Dongmei Li ; Xiaowei Zhan
- 英文论文作者：Fanqi Meng ; Kuan Liu ; Dongmei Li ; Xiaowei Zhan ; Department of Materials Science and Engineering ; College of Engineering ; Key Laboratory of Polymer Chemistry and Physics of Ministry of Education ; Peking University ; CAS Key Laboratory for Renewable Energy ; Beijing Key Laboratory for New Energy Materials and Devices ; Institute of Physics ; Chinese Academy of Sciences
- 年：2017
- 作者机构：Department of Materials Science and Engineering,College of Engineering,Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,Peking University;CAS Key Laboratory for Renewable Energy,Beijing Key Laboratory for New Energy Materials and Devices,Institute of Physics,Chinese Academy of Sciences;
- 英文论文关键词：perovskite solar cells ; interfacial layer ; trap passivation
- 会议召开时间：2017-05-27
- 会议录名称：第四届新型太阳能电池学术研讨会论文集
- 英文会议录名称：Abstract Book of the 4th Conference on New Generation Solar Cells
- 语种：英文
- 分类号：TM914.4
- 学会代码：ZKYQ
- 会议名称：第四届新型太阳能电池学术研讨会
- 会议地点：中国北京
- 主办单位：中国可再生能源学会光化学专业委员会
- 学会名称：中国科学院物理研究所清洁能源实验室
- 页数：1
- 文件大小：640k
- 原文格式：D
- 会议级别：全国
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 improved compared to those of the control devices.
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 improved compared to those of the control devices.
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 improved compared to those of the control devices.
引文
[1]F.Meng,K.Liu,S.Dai,J.Shi,H.Zhang,X.Xu,D.Li,X.Zhan,Mater.Chem.Front.,2017,DOI:10.1039/C6QM00309E.