Light-trapping Al-doped ZnO thin films for organic solar cells

被引：34

作者：

Yu, Xuan ^{[1
]}

Yu, Xiaoming ^{[1
]}

Zhang, Jianjun ^{[2
]}

Zhang, Dekun ^{[2
]}

Chen, Liqiao ^{[1
]}

Long, Yunqian ^{[1
]}

机构：

[1] Zhejiang Ocean Univ, Innovat Applicat Inst, Zhoushan 316022, Zhejiang, Peoples R China

[2] Nankai Univ, Coll Elect Informat & Opt Engn, Tianjin 300071, Peoples R China

来源：

SOLAR ENERGY | 2017年 / 153卷

基金：

中国国家自然科学基金;

关键词：

Al-doped ZnO; Thin films; Light scattering; Organic solar cells; PHOTOVOLTAIC PERFORMANCE; TRANSPORT LAYER; BUFFER LAYERS; ENHANCEMENT; MORPHOLOGY; EFFICIENCY; ELECTRODES;

D O I：

10.1016/j.solener.2017.05.052

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：

This article provides an efficient way for improving the light absorption properties and photovoltaic performance of a bulk heterojunction (BHJ) organic solar cells (OSCs) by using a light-trapping (LT) Al-doped ZnO(AZO) via controlling the heating process. Through the comparison of device performance parameters based on three different surface structures of AZO, results show that the 5 degrees C/min AZO layer with peak as high as 140 nm and average distance between major peaks of about 1.6 gm exhibited the highest LT ability. The AZO layer serves multiple functions to affect the photo-induced charge transfer, increase the light absorption through light scattering as well as a template to influence the BHJ distribution leading to a superior interface properties. Devices based on the AZO displayed a significant improvement in PCE by 43% (for the P3HT devices) and 25% (for the PTB7 devices), compared to the planar ZnO-based device. Our findings are also applicable to other BHJ mixtures for OSCs and other types of thin film solar cells. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：96 / 103

页数：8

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