Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| 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 | |
| Source Publication | ENERGY & ENVIRONMENTAL SCIENCE
 |
| Volume | 4Issue:9Pages:3414-3419 |
| Abstract | 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. |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences ; Technology ; Life Sciences & Biomedicine |
| DOI | 10.1039/c1ee01193f |
| WOS Subject Extended | Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology |
| WOS Keyword | IMPEDANCE SPECTROSCOPY ; NANOPOROUS ELECTRODES ; NANOWIRE ARRAYS ; RECOMBINATION ; PERFORMANCE ; NANOTUBES ; TRANSPORT ; ANODIZATION ; FABRICATION ; CONVERSION |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences |
| WOS ID | WOS:000294306900032 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/10369 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 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 |
| Recommended Citation GB/T 7714 | 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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