Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer  

作　　者：Shixin Hou Biao Shi Pengyang Wang Yucheng Li Jie Zhang Peirun Chen Bingbing Chen Fuhua Hou Qian Huang Yi Ding Yuelong Li Dekun Zhang Shengzhi Xu Ying Zhao Xiaodan Zhang 侯世欣;石标;王鹏阳;李玉成;张杰;陈沛润;陈兵兵;侯福华;黄茜;丁毅;李跃龙;张德坤;许盛之;赵颖;张晓丹(Institute of Photoelectronic Thin Film Devices and Technology of Nankai University,Tianjin 300350,China;Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin,Tianjin 300350,China;Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin 300072,China;Renewable Energy Conversion and Storage Center of Nankai University,Tianjin 300072,China;Engineering Research Center of Thin Film Photoelectronic Technology,Ministry of Education,Tianjin 300350,China)

机构地区：[1]Institute of Photoelectronic Thin Film Devices and Technology of Nankai University,Tianjin 300350,China [2]Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin,Tianjin 300350,China [3]Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin 300072,China [4]Renewable Energy Conversion and Storage Center of Nankai University,Tianjin 300072,China [5]Engineering Research Center of Thin Film Photoelectronic Technology,Ministry of Education,Tianjin 300350,China

出　　处：《Chinese Physics B》2020年第7期596-605,共10页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2018YFB1500103);the National Natural Science Foundation of China(Grant No.61674084);the Overseas Expertise Introduction Project for Discipline Innovation of Higher Education of China(Grant No.B16027);the Science and Technology Project of Tianjin,China(Grant No.18ZXJMTG00220).

摘　　要：Coper thiocyanate(CuSCN)is generally considered as a very hopeful inorganic hole transport material(HTM)in semitransparent perovskite solar cells(ST-PSCs)because of its low parasitic absorption,high inherent stability,and low cost.However,the poor electrical conductivity and low work function of CuSCN lead to the insufficient hole extraction and large open-circuit voltage loss.Here,2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane(F4TCNQ)is employed to improve conductivity of CuSCN and band alignment at the CuSCN/perovskite(PVK)interface.As a result,the average power conversion efficiency(PCE)of PSCs is boosted by≈11%.In addition,benefiting from the superior transparency of p-type CuSCN HTMs,the prepared bifacial semitransparent n-i-p planar PSCs demonstrate a maximum efficiency of 14.8%and 12.5%by the illumination from the front side and back side,respectively.We believe that this developed CuSCN-based ST-PSCs will promote practical applications in building integrated photovoltaics and tandem solar cells.

关 键 词：perovskite solar cell CUSCN inorganic hole transport layer organic doping semitransparent solar cell 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]