Inverted organic solar cells with ITO electrodes modified with an ultrathin Al2O3 buffer layer deposited by atomic layer deposition

被引:91
|
作者
Zhou, Yinhua [1 ]
Cheun, Hyeunseok [1 ]
Potscavage, Willliam J., Jr. [1 ]
Fuentes-Hernandez, Canek [1 ]
Kim, Sung-Jin [1 ]
Kippelen, Bernard [1 ]
机构
[1] Georgia Inst Technol, COPE, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
基金
美国国家科学基金会;
关键词
POLYMER; EFFICIENCY;
D O I
10.1039/c0jm00662a
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 report on the properties of inverted polymer solar cells using an ultrathin Al2O3 buffer layer on indium tin oxide (ITO). The ultrathin Al2O3 layer, deposited by the atomic layer deposition method, was found to reduce the work function of ITO and turns ITO into an electron-collecting electrode. The current density-voltage characteristics of unexposed devices showed an s-shape kink. The kink was eliminated upon exposure to ultraviolet (UV) illumination. Inverted solar cells based on P3HT:PC60BM yielded a fill factor of 0.64 and a power conversion efficiency of about 2.8% estimated for 100 mW cm(-2) simulated AM 1.5 illumination.
引用
收藏
页码:6189 / 6194
页数:6
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