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Influence of cysteine adsorption on the performance of CdSe quantum dots sensitized solar cells
Xu, Xueqing1; Gimenez, Sixto2; Mora-Sero, Ivan2; Abate, Antonio2; Bisquert, Juan2; Xu, Gang1
2010-11-01
发表期刊MATERIALS CHEMISTRY AND PHYSICS
ISSN0254-0584
卷号124期号:1页码:709-712
产权排序[Xu, Xueqing; Xu, Gang] Chinese Acad Sci, Guangzhou Inst Energy Convers Renewable Energy &, Key Lab, Guangzhou 510640, Guangdong, Peoples R China; [Gimenez, Sixto; Mora-Sero, Ivan; Abate, Antonio; Bisquert, Juan] Univ Jaume 1, Dept Fis, Photovolta & Optoelect Devices Grp, Castellon de La Plana 12071, Spain
通讯作者xuxq@ms.giec.ac.cn ; sero@fca.uji.es
合作性质国际
摘要The surface of mesoporous TiO(2) electrodes has been functionalized with cysteine using different solutions for the subsequent attachment of colloidal CdSe QDs solved in toluene. The adsorption behavior of both cysteine and CdSe QDs on the TiO(2) nanoparticles has been investigated by Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) Spectroscopy. The photoelectrochemical properties of the CdSe QDs sensitized TiO(2) electrode have been characterized by using UV-vis spectroscopy, photocurrent-potential measurement, open-circuit voltage decay, and cyclic voltammetry. It is found that the amount of adsorbed cysteine becomes excessive when highly concentrated aqueous solutions were adopted instead of toluene solutions, leading to a blocking for the diffusion and adsorption of the CdSe QDs. This is translated into a decrease of light harvesting and short circuit current (15) in the solar cell devices. On the other hand, it is suggested that the large amount of adsorbed cysteine on the surface of the TiO(2) electrode could reduce the electron recombination at the interface between the TiO(2) electrode and the electrolyte. As a consequence, the charge transfer resistance and fill factor became larger, and the electron lifetime became longer. (C) 2010 Elsevier B.V. All rights reserved.
文章类型Article
其他摘要The surface of mesoporous TiO(2) electrodes has been functionalized with cysteine using different solutions for the subsequent attachment of colloidal CdSe QDs solved in toluene. The adsorption behavior of both cysteine and CdSe QDs on the TiO(2) nanoparticles has been investigated by Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) Spectroscopy. The photoelectrochemical properties of the CdSe QDs sensitized TiO(2) electrode have been characterized by using UV-vis spectroscopy, photocurrent-potential measurement, open-circuit voltage decay, and cyclic voltammetry. It is found that the amount of adsorbed cysteine becomes excessive when highly concentrated aqueous solutions were adopted instead of toluene solutions, leading to a blocking for the diffusion and adsorption of the CdSe QDs. This is translated into a decrease of light harvesting and short circuit current (15) in the solar cell devices. On the other hand, it is suggested that the large amount of adsorbed cysteine on the surface of the TiO(2) electrode could reduce the electron recombination at the interface between the TiO(2) electrode and the electrolyte. As a consequence, the charge transfer resistance and fill factor became larger, and the electron lifetime became longer.
关键词Cysteine Cdse Quantum Dots Tio(2) Electrode Surfaces Solar Cells
学科领域Materials Science
WOS标题词Science & Technology ; Technology
DOI10.1016/j.matchemphys.2010.07.041
研究领域[WOS]Materials Science
URL查看原文
关键词[WOS]TIO2 FILMS ; NANOCRYSTALS ; ENERGY
收录类别SCI
语种英语
项目资助者Chinese Academy of Sciences; Ministerio de Educacion y Ciencia
WOS类目Materials Science, Multidisciplinary
WOS记录号WOS:000282607900127
引用统计
被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/8480
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers Renewable Energy &, Key Lab, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Jaume 1, Dept Fis, Photovolta & Optoelect Devices Grp, Castellon de La Plana 12071, Spain
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Xu, Xueqing,Gimenez, Sixto,Mora-Sero, Ivan,et al. Influence of cysteine adsorption on the performance of CdSe quantum dots sensitized solar cells[J]. MATERIALS CHEMISTRY AND PHYSICS,2010,124(1):709-712.
APA Xu, Xueqing,Gimenez, Sixto,Mora-Sero, Ivan,Abate, Antonio,Bisquert, Juan,&Xu, Gang.(2010).Influence of cysteine adsorption on the performance of CdSe quantum dots sensitized solar cells.MATERIALS CHEMISTRY AND PHYSICS,124(1),709-712.
MLA Xu, Xueqing,et al."Influence of cysteine adsorption on the performance of CdSe quantum dots sensitized solar cells".MATERIALS CHEMISTRY AND PHYSICS 124.1(2010):709-712.
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