Metal and F dual-doping to synchronously improve electron transport rate and lifetime for TiO2 photoanode to enhance dye-sensitized solar cells performances

	Metal and F dual-doping to synchronously improve electron transport rate and lifetime for TiO2 photoanode to enhance dye-sensitized solar cells performances
	Duan, Yandong 1,2; Zheng, Jiaxin 1; Xu, Ming 1; Song, Xiaohe 1; Fu, Nianqing 2,3; Fang, Yanyan 2; Zhou, Xiaowen 2; Lin, Yuan 1,2; Pan, Feng 1
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2015-03-14
卷号	3 期号:10 页码:5692-5700
英文摘要	A general strategy to synchronously improve electron transport rate and lifetime for TiO2 photoanode by metal and F- dual doping is proposed and demonstrated for dye-sensitized solar cells (DSSCs) for the first time. Tin and fluorine dual-doped TiO2 nanoparticles are prepared and X-ray photoelectron spectroscopy (XPS) analysis indicates that the Sn atoms and the F atoms locate mainly in the TiO2 lattice and on the TiO2 particles surface, respectively. The DSSC based on Sn/F-TiO2 sample shows a high photoconversion efficiency of 8.89% under an AM 1.5 solar condition (100 mW cm(-2)), which is higher than those for the undoped TiO2 nanoparticles (7.12%) and the solely Sn (8.14%) or F doped (8.31%) samples. This improvement is attributed to the combined effects of a faster electron transport rate and a longer electron lifetime in the dual-doped TiO2 film. Following this strategy, we also prepare Ta/F, Nb/F, and Sb/F dual-doped TiO2 nanoparticles and find that the performance of DSSCs based on all the dual-doped samples is further improved compared with the single doping cases. Finally, through density functional theory (DFT) calculations, the mechanism behind the improvement by tin and fluorine dual-doping is discussed in detail.
收录类别	SCI
语种	英语
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/28273]
专题	化学研究所_光化学实验室
作者单位	1.Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen 518055, Peoples R China 2.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Duan, Yandong,Zheng, Jiaxin,Xu, Ming,et al. Metal and F dual-doping to synchronously improve electron transport rate and lifetime for TiO2 photoanode to enhance dye-sensitized solar cells performances[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(10):5692-5700.
APA	Duan, Yandong.,Zheng, Jiaxin.,Xu, Ming.,Song, Xiaohe.,Fu, Nianqing.,...&Pan, Feng.(2015).Metal and F dual-doping to synchronously improve electron transport rate and lifetime for TiO2 photoanode to enhance dye-sensitized solar cells performances.JOURNAL OF MATERIALS CHEMISTRY A,3(10),5692-5700.
MLA	Duan, Yandong,et al."Metal and F dual-doping to synchronously improve electron transport rate and lifetime for TiO2 photoanode to enhance dye-sensitized solar cells performances".JOURNAL OF MATERIALS CHEMISTRY A 3.10(2015):5692-5700.