The Origin of Higher Open-Circuit Voltage in Zn-Doped TiO2 Nanoparticle-Based Dye-Sensitized Solar Cells

doi:10.1002/cphc.201200362

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	The Origin of Higher Open-Circuit Voltage in Zn-Doped TiO2 Nanoparticle-Based Dye-Sensitized Solar Cells
	Zhu, Feng 2; Zhang, Panpan 1; Wu, Xuejun 2; Fu, Limin 1; Zhang, Jianping 1; Xu, Dongsheng 2
刊名	CHEMPHYSCHEM
	2012-11-12
卷号	13 期号:16 页码:3731-3737
关键词	Electronic Structure Nanoparticles Photochemistry Photophysics Semiconductors
ISSN号	1439-4235
DOI	10.1002/cphc.201200362
英文摘要	Zn-doped anatase TiO2 nanoparticles are synthesized by a one-step hydrothermal method. Detailed electrochemical measurements are undertaken to investigate the origin of the effect of Zn doping on the performance of dye-sensitized solar cells (DSSCs). It is found that incorporation of Zn2+ into an anatase lattice elevates the edge of the conduction band (CB) of the photoanodes and the Fermi level is shifted toward the CB edge, which contributes to the improvement in open-circuit voltage (V-OC). Charge-density plots across the cell voltage further confirm the increase in the CB edge in DSSCs directly. Photocurrent and transient photovoltage measurements are employed to study transport and recombination dynamics. The electron recombination is accelerated at higher voltages close to the CB edge, thus leading to a negative effect on the V-OC.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000310602600021
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/47717]
专题	中国科学院化学研究所
通讯作者	Fu, Limin
作者单位	1.Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China 2.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Feng,Zhang, Panpan,Wu, Xuejun,et al. The Origin of Higher Open-Circuit Voltage in Zn-Doped TiO2 Nanoparticle-Based Dye-Sensitized Solar Cells[J]. CHEMPHYSCHEM,2012,13(16):3731-3737.
APA	Zhu, Feng,Zhang, Panpan,Wu, Xuejun,Fu, Limin,Zhang, Jianping,&Xu, Dongsheng.(2012).The Origin of Higher Open-Circuit Voltage in Zn-Doped TiO2 Nanoparticle-Based Dye-Sensitized Solar Cells.CHEMPHYSCHEM,13(16),3731-3737.
MLA	Zhu, Feng,et al."The Origin of Higher Open-Circuit Voltage in Zn-Doped TiO2 Nanoparticle-Based Dye-Sensitized Solar Cells".CHEMPHYSCHEM 13.16(2012):3731-3737.