A Halogenation Strategy for over 12% Efficiency Nonfullerene Organic Solar Cells

被引：166

作者：

Wang, Yanbo ^{[1
]}

Zhang, Yamin ^{[1
]}

Qiu, Nailiang ^{[1
]}

Feng, Huanran ^{[1
]}

Gao, Huanhuan ^{[1
]}

Kan, Bin ^{[1
]}

Ma, Yanfeng ^{[1
]}

Li, Chenxi ^{[1
]}

Wan, Xiangjian ^{[1
]}

Chen, Yongsheng ^{[1
]}

机构：

[1] Nankai Univ, Coll Chem, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, State Key Lab & Inst Elementoorgan Chem,Ctr Nanos, Tianjin 300071, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2018年 / 8卷 / 15期

关键词：

absorption; crystallinity; nonfullerene acceptors; organic solar cells; NON-FULLERENE ACCEPTORS; ENERGY-LEVEL MODULATION; HIGHLY EFFICIENT; ELECTRON-ACCEPTORS; 13-PERCENT EFFICIENCY; CATHODE INTERLAYER; PERYLENE DIIMIDES; POLYMER; DONOR; ACHIEVE;

D O I：

10.1002/aenm.201702870

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：

Three acceptor-donor-acceptor type nonfullerene acceptors (NFAs), namely, F-F, F-Cl, and F-Br, are designed and synthesized through a halogenation strategy on one successful nonfullerene acceptor FDICTF (F-H). The three molecules show red-shifted absorptions, increased crystallinities, and higher charge mobilities compared with the F-H. After blending with donor polymer PBDB-T, the F-F-, F-Cl-, and F-Br-based devices exhibit power conversion efficiencies (PCEs) of 10.85%, 11.47%, and 12.05%, respectively, which are higher than that of F-H with PCE of 9.59%. These results indicate that manipulating the absorption range, crystallinity and mobilities of NFAs by introducing different halogen atoms is an effective way to achieve high photovoltaic performance, which will offer valuable insight for the designing of high-efficiency organic solar cells.

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页数：7

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