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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
Source PublicationMATERIALS CHEMISTRY AND PHYSICS
ISSN0254-0584
Volume124Issue:1Pages:709-712
Contribution Rank[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
Corresponding Authorxuxq@ms.giec.ac.cn ; sero@fca.uji.es
Cooperation Status国际
AbstractThe 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.
SubtypeArticle
Other AbstractThe 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.
KeywordCysteine Cdse Quantum Dots Tio(2) Electrode Surfaces Solar Cells
Subject AreaMaterials Science
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.matchemphys.2010.07.041
WOS Subject ExtendedMaterials Science
URL查看原文
WOS KeywordTIO2 FILMS ; NANOCRYSTALS ; ENERGY
Indexed BySCI
Language英语
Funding OrganizationChinese Academy of Sciences; Ministerio de Educacion y Ciencia
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000282607900127
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/8480
Collection中国科学院广州能源研究所
Affiliation1.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
Recommended Citation
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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