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Improving charge separation of solar cells by the co-sensitization of CdS quantum dots and dye
Song, Xin1; Yu, Xue-Lian1,2; Xie, Yang1; Sun, Jing1; Ling, Tao1; Du, Xi-Wen1; Yu, XL
2010-09-01
Source PublicationSEMICONDUCTOR SCIENCE AND TECHNOLOGY
ISSN0268-1242
Volume25Issue:9Pages:文献号: 095014
AbstractA co-sensitizer of CdS quantum dots plus N3 dye was developed to improve the conversion efficiency of solar cells. The photoanode of the solar cells was composed of ZnO nanowires coated with the CdS quantum dots and N3 dye successively; such a constructor can not only overcome the photocorrosion of CdS quantum dots, but also decrease the dissolution of ZnO nanowires, especially, improving the charge separation and electron injection. The open-circuit voltage of co-sensitized solar cells is also improved due to an enhanced retardation of charge recombination. The conversion efficiency of solar cells is enhanced from 0.5% of N3 sensitizer and 0.4% of CdS quantum dots to 1.9% of co-sensitizer; the significant improvement is attributed to the efficient hole transfer from CdS to N3 dye, which eliminates the exciton annihilation process and allows a leisurely electron injection into ZnO nanowires. Our result indicates that the co-sensitization is an essential step for highly efficient solar cell operation.
KeywordNanocrystalline Tio2 Films Semiconductor Nanocrystals Photosensitization Efficiency Electrons Layers
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1088/0268-1242/25/9/095014
Indexed BySCI
Language英语
WOS KeywordNANOCRYSTALLINE TIO2 FILMS ; SEMICONDUCTOR NANOCRYSTALS ; PHOTOSENSITIZATION ; EFFICIENCY ; ELECTRONS ; LAYERS
WOS Research AreaEngineering ; Materials Science ; Physics
WOS SubjectEngineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Condensed Matter
WOS IDWOS:000281221200015
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5808
Collection多相复杂系统国家重点实验室
Corresponding AuthorYu, XL
Affiliation1.Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Song, Xin,Yu, Xue-Lian,Xie, Yang,et al. Improving charge separation of solar cells by the co-sensitization of CdS quantum dots and dye[J]. SEMICONDUCTOR SCIENCE AND TECHNOLOGY,2010,25(9):文献号: 095014.
APA Song, Xin.,Yu, Xue-Lian.,Xie, Yang.,Sun, Jing.,Ling, Tao.,...&Yu, XL.(2010).Improving charge separation of solar cells by the co-sensitization of CdS quantum dots and dye.SEMICONDUCTOR SCIENCE AND TECHNOLOGY,25(9),文献号: 095014.
MLA Song, Xin,et al."Improving charge separation of solar cells by the co-sensitization of CdS quantum dots and dye".SEMICONDUCTOR SCIENCE AND TECHNOLOGY 25.9(2010):文献号: 095014.
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