Fullerenes and derivatives as electron transport materials in perovskite solar cells

被引：27

作者：

Zhang, Kaicheng ^{[1
]}

Yu, Hao ^{[1
]}

Liu, Xiaodong ^{[1
]}

Dong, Qingqing ^{[1
]}

Wang, Zhaowei ^{[1
]}

Wang, Yaofeng ^{[1
]}

Chen, Ning ^{[1
]}

Zhou, Yi ^{[1
]}

Song, Bo ^{[1
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China

来源：

SCIENCE CHINA-CHEMISTRY | 2017年 / 60卷 / 01期

基金：

中国国家自然科学基金;

关键词：

perovskite solar cells; pristine fullerenes; methanofullerenes; vacuum-evaporation; solution; processed; ANOMALOUS HYSTERESIS; POLYMER; LAYERS; EXCITATION; DEPOSITION; ORIGIN; GROWTH;

D O I：

10.1007/s11426-016-0115-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, two fullerenes (C60, C70) and their methano-substitutions (PC61BM, PC71BM), as electron transport materials (ETMs) in perovskite solar cells (Pero-SCs), were systematically studied. As being used as ETMs, methanofullerenes, though with lower electron mobility compared to the counterpart pristine fullerenes, lead to higher power conversion efficiencies (PCEs) of Pero-SCs. The difference is likely caused by the fill-out vacancies and smoother morphology of the interfaces between ETM and perovskite layers, as they were prepared by different methods. In addition, compared to C60 and PC61BM, C70 and PC71BM showed priority in terms of short-circuit current density, which should be attributed to fast free charge extraction abilities.

引用

页码：144 / 150

页数：7

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