Conversion efficiency improvement mechanisms of polymer solar cells by balance electron-hole mobility using blended P3HT:PCBM:pentacene active layer

被引:28
作者
Lee, Ching-Ting [1 ]
Lee, Cheng-Hsin [1 ]
机构
[1] Natl Cheng Kung Univ, Inst Microelect, Dept Elect Engn, Res Ctr Energy Technol & Strategy, Tainan 701, Taiwan
关键词
Blended active layer; Carrier mobility balance; Polymer solar cells; Power conversion efficiency; Space-charge-limited current model; CHARGE-TRANSPORT; POLY(3-HEXYLTHIOPHENE); 3-HEXYLTHIOPHENE;
D O I
10.1016/j.orgel.2013.04.038
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
To improve the power conversion efficiency of polymer solar cells, the blended P3HT:PCBM:pentacene active layer was used to balance hole-electron mobility and roughen surface. Using space-charged-limited current model to analyze the hole-only devices and the electron-only devices, the P3HT: PCBM: pentacene (weight ratio = 1:0.8:0.09) active layer exhibited balance hole-electron mobility. Compared with the power conversion efficiency of 3.46% of the conventional polymer solar cells using P3HT: PCBM (1: 0.8) active layer, the power conversion efficiency of 4.42% was obtained. In other words, the power conversion efficiency was improved about 27.5%. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:2046 / 2050
页数:5
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