期刊
ELECTROCHIMICA ACTA
卷 85, 期 -, 页码 600-604出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.07.110
关键词
Single walled carbon nanotubes; PVP wrapping agent; SCNTs-carbon composite; Counter electrode; Dye sensitized solar cells
资金
- Human Resources Development program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20104010100660]
- Korea government Ministry of Knowledge Economy
- National Research Foundation (NRF), Korea [2011-0029527]
- National Research Foundation of Korea [2011-0029527] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
An effective counter electrode (CE) was prepared with single-walled carbon nanotubes (SCNTs) for the dye sensitized solar cells (DSSCs) by simple casting technique using polyvinylpyrrolidone (PVP) as a wrapping agent. The uniform and smooth SCNTs thin film without breaking of tubes were obtained on the fluorine doped tin oxide (FTO) glass substrate by the wrapping of PVP. The SCNTs and carbon residue composite were formed after the calcinations of SCNTs-PVP on FTO glass, which decreased the resistance of the electrode and promoted the higher electrochemical reaction for charge transfer reactions. DSSCs fabricated with SCNTs-PVP CE presented reasonably high conversion efficiency of 4.5% with high open circuit voltage (V-OC) of 0.718V, short circuit current (J(SC)) of 12.14 mA/cm(2) and fill factor (FF) of 51.7%, while the bare SCNTs CE showed the conversion efficiency 2.34% with V-OC 0.680 V,J(SC) 13.7 mA/cm(2) and FF 26%. The improved photovoltaic performance of DSSC attributed to the high electro-catalytic activity for the reduction of I-3(-) ion at SCNTs-PVP CE, resulting from the large R-CE and low R-CT of DSSC. (C) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据