Synthesis of a side-chain hole transporting polymer through Mitsunobu post-functionalization for efficient inverted perovskite solar cells

被引:7
作者
Lan, Liuyuan [1 ,2 ]
Deng, Xiang [3 ]
Zhang, Jie [1 ,2 ]
Luo, Jingdong [1 ,2 ]
Jen, Alex K. -Y. [2 ,3 ]
机构
[1] City Univ Hong Kong, Shenzhen Res Inst, Shenzhen, Peoples R China
[2] City Univ Hong Kong, Dept Chem, Kowloon, Hong Kong, Peoples R China
[3] City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, Hong Kong, Peoples R China
关键词
HIGHLY EFFICIENT; HIGH-PERFORMANCE;
D O I
10.1039/d0py00134a
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
An efficient post-functionalization protocol of the Mitsunobu reaction between a commercial reactive polymer of poly(4-vinylphenol) (PVP) and 9-(2-hydroxylethyl)-N,N,N,N-tetrakis(4-methoxyphenyl)-9H-carbazole-2,7-diamine is reported to synthesize a novel side-chain polymer (PVP-CZ) with a high density of hole transporting moieties. The polymer PVP-CZ exhibits adequate solvent resistance and excellent film forming ability for the fabrication of inverted perovskite solar cells (PVSCs). The thermal, optical and electrochemical properties of PVP-CZ were investigated in detail. The steady-state photoluminescence (PL) and time resolved photoluminescence (TRPL) decay showed the excellent hole-extracting ability of dopant-free PVP-CZ from the perovskite layer. As a result, the inverted PVSCs delivered a respectable power conversion efficiency of 17.75% with a high fill factor of 81.07%. These results indicate that the synthetic strategy using the post-functionalization of the Mitsunobu reaction is a promising protocol to develop novel side-chain hole transporting polymers for highly efficient PVSCs.
引用
收藏
页码:2883 / 2888
页数:6
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