Spontaneous formation of nanoripples on the surface of ZnO thin films as hole-blocking layer of inverted organic solar cells

被引：68

作者：

Lim, Dong Chan ^{[2
]}

Shim, Won Hyun ^{[2
,3
]}

Kim, Kwang-Dae ^{[1
]}

Seo, Hyun Ook ^{[1
]}

Lim, Jae-Hong ^{[2
]}

Jeong, Yongsoo ^{[2
]}

Kim, Young Dok ^{[1
]}

Lee, Kyu Hwan ^{[2
]}

机构：

[1] Sungkyunkwan Univ, Dept Chem, Suwon 440746, South Korea

[2] Korea Inst Mat Sci, Mat Proc Div, Chang Won 641010, South Korea

[3] Pusan Natl Univ, Sch Mat Sci & Engn, Pusan 609735, South Korea

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2011年 / 95卷 / 11期

关键词：

Inverted organic solar cell; ZnO; Nanostructure; TITANIUM-OXIDE; PERFORMANCE; DEGRADATION; COLLECTION;

D O I：

10.1016/j.solmat.2011.06.028

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A simple method for spontaneous formation of nanoripples on ZnO thin films was developed, and these nanostructured ZnO films were used as hole-blocking layer in inverted organic solar cells. Moreover, the size (height) of nanoripples on ZnO surface could be controlled in the range of several tens of nanometers. Among various ZnO films, surface structures with similar to 70 nm-high nanoripples resulted in the best photovoltaic performance of the organic solar cell consisting of a stack of indium tin oxide/ZnO/ regioregular poly (3-hexyl thiophene), phenyl-C-61-butyric acid methyl ester/Ag. The power conversion efficiency of inverted organic solar cells consisting of with 70 nm-high ZnO nanoripples (similar to 3.2%) was higher than that of a relatively flat ZnO surface by a factor of similar to 2. Existence of nanoripples on ZnO results in a higher contact area between ZnO and active layer, leading to an enhanced photovoltaic performance. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3036 / 3040

页数：5

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