Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| 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 Publication | MATERIALS CHEMISTRY AND PHYSICS
 |
| ISSN | 0254-0584 |
| Volume | 124Issue: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 Author | xuxq@ms.giec.ac.cn ; sero@fca.uji.es |
| Cooperation Status | 国际 |
| Abstract | 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. |
| Subtype | Article |
| Other Abstract | 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. |
| Keyword | Cysteine Cdse Quantum Dots Tio(2) Electrode Surfaces Solar Cells |
| Subject Area | Materials Science |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1016/j.matchemphys.2010.07.041 |
| WOS Subject Extended | Materials Science |
| URL | 查看原文 |
| WOS Keyword | TIO2 FILMS ; NANOCRYSTALS ; ENERGY |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | Chinese Academy of Sciences; Ministerio de Educacion y Ciencia |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000282607900127 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/8480 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 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 |
| 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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