Dye-sensitized solar cells based on WS2 counter electrodes

被引：52
|
作者：
Li, Shengjun
Chen, Zeng
Zhang, Weifeng [1 ]
机构：
[1] Henan Univ, Key Lab Photovolta Mat Henan Prov, Kaifeng 475001, Peoples R China
来源：
MATERIALS LETTERS | 2012年 / 72卷
基金：
中国国家自然科学基金;
关键词：
Energy storage and conversion; Dye-sensitized solar cells; WS2 counter electrodes; Nanocomposites; LOW-COST;
D O I：
10.1016/j.matlet.2011.12.052
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, WS2 films were prepared by doctor-blading technique and introduced into dye-sensitized solar cell (DSC) system as counter electrodes. To improve the electron conductivity and bonding strength between the active material and substrate, TiO2 (P25) and carbon nanoparticles were added in the WS2 films. We compared the electrochemical catalytic activity of WS2 with Pt for the reduction of triiodide to iodide by measuring cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The DSCs assembled with WS2/P25/C counter electrodes showed a photovoltaic conversion efficiency of 4.56%. Our study indicates that WS2 is a good candidate to replace the Pt counter electrodes in DSCs. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：22 / 24
页数：3
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