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Origin of efficiency enhancement in Nb2O5 coated titanium dioxide nanorod based dye sensitized solar cells
Barea, Eva1; Xu, Xueqing1,2; Gonzalez-Pedro, Victoria1; Ripolles-Sanchis, Teresa1; Fabregat-Santiago, Francisco1; Bisquert, Juan1
2011-09-01
发表期刊ENERGY & ENVIRONMENTAL SCIENCE
卷号4期号:9页码:3414-3419
摘要Ordered one-dimensional metal oxides are considered promising architectures for dye-sensitized solar cells (DSC). Here we explore the properties determining the photovoltaic performance of DSC based on titanium dioxide nanorods prepared by a hydrothermal method. Ultrathin conformal coating with other oxides such as Al2O3 or Nb2O5 has been widely used in the literature to improve the conversion efficiency. Usually the effects attributed to the coating are either to prevent recombination by barrier effect or to change the position of titanium dioxide conduction band. Here we show that coating TiO2 nanorods with Nb2O5 increases the photocurrent and conversion efficiency of the DSC. However, impedance spectroscopy results indicate that neither recombination is reduced by the coating nor the conduction band position is moved. The improvement in the performance of the cell has been attributed to an enhancement in the charge injection efficiency promoted by Nb2O5.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology ; Life Sciences & Biomedicine
DOI10.1039/c1ee01193f
研究领域[WOS]Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
关键词[WOS]IMPEDANCE SPECTROSCOPY ; NANOPOROUS ELECTRODES ; NANOWIRE ARRAYS ; RECOMBINATION ; PERFORMANCE ; NANOTUBES ; TRANSPORT ; ANODIZATION ; FABRICATION ; CONVERSION
收录类别SCI
语种英语
WOS类目Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
WOS记录号WOS:000294306900032
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10369
专题中国科学院广州能源研究所
作者单位1.Univ Jaume 1, Dept Fis, Grp Dispositius Fotovolta & Optoelect, Castellon de La Plana, Spain
2.Chinese Acad Sci, Renewable Energy & Gas Hydrate Key Lab, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
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Barea, Eva,Xu, Xueqing,Gonzalez-Pedro, Victoria,et al. Origin of efficiency enhancement in Nb2O5 coated titanium dioxide nanorod based dye sensitized solar cells[J]. ENERGY & ENVIRONMENTAL SCIENCE,2011,4(9):3414-3419.
APA Barea, Eva,Xu, Xueqing,Gonzalez-Pedro, Victoria,Ripolles-Sanchis, Teresa,Fabregat-Santiago, Francisco,&Bisquert, Juan.(2011).Origin of efficiency enhancement in Nb2O5 coated titanium dioxide nanorod based dye sensitized solar cells.ENERGY & ENVIRONMENTAL SCIENCE,4(9),3414-3419.
MLA Barea, Eva,et al."Origin of efficiency enhancement in Nb2O5 coated titanium dioxide nanorod based dye sensitized solar cells".ENERGY & ENVIRONMENTAL SCIENCE 4.9(2011):3414-3419.
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