Improving performance of organic solar cells using amorphous tungsten oxides as an interfacial buffer layer on transparent anodes

被引：238

作者：

Han, Seungchan ^{[1
]}

Shin, Won Suk ^{[2
]}

Seo, Myungsoo ^{[1
]}

Gupta, Dipti ^{[1
]}

Moon, Sang-Jin ^{[2
]}

Yoo, Seunghyup ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Sch Elect Engn & Comp Sci, Taejon 305701, South Korea

[2] Korea Res Inst Chem Technol, Taejon 305600, South Korea

来源：

ORGANIC ELECTRONICS | 2009年 / 10卷 / 05期

关键词：

P3HT; PCBM; Tungsten oxide; Buffer layer; Large area solar cell; LIGHT-EMITTING-DIODES; CHARGE-TRANSPORT; POLYMER;

D O I：

10.1016/j.orgel.2009.03.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermally evaporated tungsten oxide (WO3) films are investigated as a buffer layer on anodes to improve the performance of bulk-heterojunction solar cells based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C-61 butyric acid methyl ester (PCBM-60). Characterization of the WO3 film under study shows that it is amorphous with the conductivity on the order of 10(-6) S/cm and can effectively planarize an originally rough ITO surface down to the RMS roughness of 0.88 nm. Insertion of 5-30 nm-thick WO3 layers resulted in power conversion efficiency and fill factor as high as 3.1% and 0.70, respectively, showing an improvement with a good batch-to-batch consistency over conventional cells. The observed improvement is related mainly to the relatively large shunt resistance Of WO3-based cells under illumination that is linked to a low carrier recombination resulting in high fill factor and open-circuit voltage. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：791 / 797

页数：7

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