Highly π-extended copolymer as additive-free hole-transport material for perovskite solar cells

被引:22
|
作者
Liu, Jie [1 ,2 ]
Ge, Qianqing [1 ,2 ]
Zhang, Weifeng [1 ,2 ]
Ma, Jingyuan [1 ,2 ]
Ding, Jie [1 ,2 ]
Yu, Gui [1 ,2 ]
Hu, Jinsong [1 ,2 ]
机构
[1] Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
perovskite solar cell; hole-transport layer; dopant-free; PDVT-10; stability; ENHANCED EFFICIENCY; LITHIUM-SALTS; LAYER; CH3NH3PBI3; DEPOSITION; MORPHOLOGY; DIFFUSION; ABSORBER; POLYMER; LENGTHS;
D O I
10.1007/s12274-017-1618-z
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Organolead halide perovskite solar cells have achieved a certified power-conversion efficiency (PCE) of 22.1% and are thus among the most promising candidates for next-generation photovoltaic devices. To date, most high-efficiency perovskite solar cells have employed arylamine-based hole-transport materials (HTMs), which are expensive and have a low mobility. The complicated doping procedures and the potentially stability-adverse dopants used in these HTMs are among the major bottlenecks for the commercialization of perovskite solar cells (PSCs). Herein, we present a polythiophene-based copolymer (PDVT-10) with a hole mobility up to 8.2 cm(2).V-1.s(-1) and a highest occupied molecular orbital level of -5.28 eV as a hole-transport layer (HTL) for a PSC. A device based on this new HTM exhibited a high PCE of 13.4% under 100 mW.cm(-2) illumination, which is one of the highest PCEs reported for the dopant-free polymer-based HTLs. Moreover, PDVT-10 exhibited good solution processability, decent air stability, and thermal stability, making it a promising candidate as an HTM for PSCs.
引用
收藏
页码:185 / 194
页数:10
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