Interfacial engineering with conjugated polyelectrolyte for high performance 2D perovskite solar cells

被引：0

作者：

Wang, Helong ^{[1
,2
]}

Xie, Xiaoyin ^{[3
]}

Zeng, Fanming ^{[1
]}

Liu, Guanchen ^{[3
]}

机构：

[1] Changchun Univ Sci & Technol, Sch Mat Sci & Engn, Changchun 130022, Jilin, Peoples R China

[2] Jilin Railway Technol Coll, Sch Mech Engn, Jilin 132200, Jilin, Peoples R China

[3] Jilin Inst Chem Technol, Sch Mat Sci & Engn, Jilin 132022, Jilin, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 761卷

关键词：

Perovskite solar cells; Interfacial engineering; 2D perovskite; Conjugated polyelectrolyte; SOLUTION-PROCESSED PEROVSKITE; HIGH-EFFICIENCY; CRYSTALLIZATION; SURFACE;

D O I：

10.1016/j.cplett.2020.138063

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：

We introduce a facile method to form a well-deposited [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) film on the surface of 2D perovskite by mixing the poly[(9,9-bis(3'-(N,N-dimethylamino)propyl)-2,7-fluorene)-alt-2,7(9,9-dioctylfluorene)] (PFN), which can benefit the film formation of PCBM as well as improve the electron extraction efficiency of electron transport layer (ETL). As a result, the optimized group presents an enhanced photovoltaic performance with power conversion efficiency of 12.7%, which is attributed to the improved interfacial contact and better matched energy alignment. It is observed that the fully covered and dense ETL (PCBM:PFN) leads to a better environmental stability of devices in ambient air condition without encapsulation.

引用

页数：5

共 31 条

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