Graphene and Ag nanowires co-modified photoanodes for high-efficiency dye-sensitized solar cells

被引：18

作者：

Yan, Haoran ^{[1
]}

Wang, Jianxin ^{[1
]}

Feng, Bo ^{[1
]}

Duan, Ke ^{[1
]}

Weng, Jie ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China

来源：

SOLAR ENERGY | 2015年 / 122卷

基金：

中国国家自然科学基金;

关键词：

Dye-sensitized solar cell; Graphene; Mesoporous microspheres; Ag nanowires; Light scatting layer; PHOTOVOLTAIC PERFORMANCE; CONVERSION-EFFICIENCY; ENERGY-CONVERSION; SILVER NANOWIRES; THIN-FILM; TIO2; NANOPARTICLES; LAYER; ENHANCEMENT; NANOCOMPOSITE;

D O I：

10.1016/j.solener.2015.10.026

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：

In the present work, a novel multistage structure dye-sensitized solar cell (DSSC), which consists of Ag nanowires (AgNWs), TiO2 nanoparticles and graphene wrapped TiO2 mesoporous microspheres (GTMs), was fabricated by using simple spin coating steps. The aim of this study was to modify the bandgap of GTMs by using graphene so as to promote the light absorption of GTMs in the visible light region and in turn to improve the power conversion efficiency (PCE) of DSSCs. Additionally, graphene and AgNWs can enhance the electron transfer in the DSSC to further improve the PCE of DSSCs. The effect of AgNWs and GTMs light scatting layer on the photovoltaic performance of DSSCs was investigated. The results showed that a PCE of 7.42% was achieved for the DSSC co-modified by GTMs and AgNWs, which was about twice as much as that for the DSSCs only with a TiO(2)nanoparticle layer (with a PCE of 3.53%). This present study might open a new avenue for the improvement of the PCE of DSSCs. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：966 / 975

页数：10

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