Enhanced performance of CdTe quantum dot sensitized solar cell via anion exchanges

doi:10.1016/j.jpowsour.2014.12.022

CORC > 化学研究所 > 中国科学院化学研究所

	Enhanced performance of CdTe quantum dot sensitized solar cell via anion exchanges
	Shen, Xuehua 1,3; Jia, Jianguang 1; Lin, Yuan 2; Zhou, Xiaowen 2
刊名	JOURNAL OF POWER SOURCES
	2015-03-01
卷号	277 页码:215-221
关键词	Anion Exchange Cadmium Telluride Quantum Dot Sensitized Solar Cell Solar-to-energy Conversion
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2014.12.022
英文摘要	We report on an eco-friendly way to prepare CdTe/CdS quantum dots for quantum dot sensitized solar cell (QDSSC). CdTe/CdS quantum dots are synthesized through an anion exchange between CdTe quantum dots (QDs) and S2- in aqueous solution at low temperature under ambient condition. The resultant QDs are bonded onto TiO2 with the help of thioglycolic acid bifunctional molecule. The uniform distribution of QDs throughout the TiO2 mesoporous film depth is confirmed by the energy dispersive Xray (EDX) elemental mapping. Absorption, dark current, impedance spectroscopy, and intensity-modulated photocurrent analyses prove that anion exchange can efficiently extend the absorption range, suppress the charge recombination, increase the electron injection as well as accelerate the electron transportation in the cell. In combination with CdS post-treatment, a solar-to-energy conversion efficiency of 2.44% is achieved for CdTe/CdS QDSSC, which is more than 15 times that of the CdTe based cell. (C) 2014 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000348957000027
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/53569]
专题	中国科学院化学研究所
通讯作者	Jia, Jianguang
作者单位	1.Beijing Univ Chem Technol, Sch Sci, Dept Phys Chem, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Key Lab Photochem, Beijing 100190, Peoples R China 3.Tarim Univ, Coll Life Sci, Alar 843300, Peoples R China
推荐引用方式 GB/T 7714	Shen, Xuehua,Jia, Jianguang,Lin, Yuan,et al. Enhanced performance of CdTe quantum dot sensitized solar cell via anion exchanges[J]. JOURNAL OF POWER SOURCES,2015,277:215-221.
APA	Shen, Xuehua,Jia, Jianguang,Lin, Yuan,&Zhou, Xiaowen.(2015).Enhanced performance of CdTe quantum dot sensitized solar cell via anion exchanges.JOURNAL OF POWER SOURCES,277,215-221.
MLA	Shen, Xuehua,et al."Enhanced performance of CdTe quantum dot sensitized solar cell via anion exchanges".JOURNAL OF POWER SOURCES 277(2015):215-221.