Influence of cysteine adsorption on the performance of CdSe quantum dots sensitized solar cells

doi:10.1016/j.matchemphys.2010.07.041

GIEC OpenIR > 中国科学院广州能源研究所

	Influence of cysteine adsorption on the performance of CdSe quantum dots sensitized solar cells
	Xu, Xueqing 1; Gimenez, Sixto 2; Mora-Sero, Ivan 2; Abate, Antonio 2; Bisquert, Juan 2; Xu, Gang 1
	2010-11-01
发表期刊	MATERIALS CHEMISTRY AND PHYSICS
ISSN	0254-0584
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
DOI	10.1016/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：25[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
推荐引用方式 GB/T 7714	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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