Improving charge separation of solar cells by the co-sensitization of CdS quantum dots and dye

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	Improving charge separation of solar cells by the co-sensitization of CdS quantum dots and dye
	Song, Xin 1; Yu, Xue-Lian 1,2; Xie, Yang 1; Sun, Jing 1; Ling, Tao 1; Du, Xi-Wen 1
刊名	SEMICONDUCTOR SCIENCE AND TECHNOLOGY
	2010-09-01
卷号	25 期号:9 页码:文献号: 095014
关键词	NANOCRYSTALLINE TIO2 FILMS SEMICONDUCTOR NANOCRYSTALS PHOTOSENSITIZATION EFFICIENCY ELECTRONS LAYERS
ISSN号	0268-1242
通讯作者	Yu, XL
英文摘要	A 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.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Condensed Matter
研究领域[WOS]	Engineering ; Materials Science ; Physics
关键词[WOS]	NANOCRYSTALLINE TIO2 FILMS ; SEMICONDUCTOR NANOCRYSTALS ; PHOTOSENSITIZATION ; EFFICIENCY ; ELECTRONS ; LAYERS
收录类别	SCI
语种	英语
WOS记录号	WOS:000281221200015
公开日期	2013-11-14
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/5808]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 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,&Du, Xi-Wen.(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.