ITO@Cu2S Tunnel Junction Nanowire Arrays as Efficient Counter Electrode for Quantum-Dot-Sensitized Solar Cells

doi:10.1021/nl404251p

CORC > 化学研究所 > 中国科学院化学研究所

	ITO@Cu2S Tunnel Junction Nanowire Arrays as Efficient Counter Electrode for Quantum-Dot-Sensitized Solar Cells
	Jiang, Yan; Zhang, Xing; Ge, Qian-Qing; Yu, Bin-Bin; Zou, Yu-Gang; Jiang, Wen-Jie; Song, Wei-Guo; Wan, Li-Jun; Hu, Jin-Song
刊名	NANO LETTERS
	2014
卷号	14 期号:1 页码:365-372
关键词	Quantum Dots Solar Cells Nanowires Tunnel Junctions Counter Electrodes
ISSN号	1530-6984
DOI	10.1021/nl404251p
英文摘要	Quantum-dot-sensitized solar cell (QDSSC) has been considered as an alternative to new generation photovoltaics, but it still presents very low power conversion efficiency. Besides the continuous effort on improving photoanodes and electrolytes, the focused investigation on charge transfer at interfaces and the rational design for counter electrodes (CEs) are recently receiving much attention. Herein, core-shell nanowire arrays with tin-doped indium oxide (ITO) nanowire core and Cu2S nanocrystal shell (ITO@Cu2S) were dedicatedly designed and fabricated as new efficient CEs for QDSSCs in order to improve charge collection and transport and to.avoid the intrinsic issue of copper dissolution in popular and most efficient Cu/Cu2S CEs. The high-quality tunnel junctions formed between n-type ITO nanowires and p-type Cu2S nanocrystals led to the considerable decrease in sheet resistance and charge transfer resistance and thus facilitated the electron transport during the operation of QDSSCs. The three-dimensional structure of nanowire arrays provided high surface area for more active catalytic sites and easy accessibility for an electrolyte. As a result, the power conversion efficiency of QDSSCs with the designed ITO@Cu2S CEs increased by 84.5 and 33.5% compared to that with planar Au and Cu2S CEs, respectively.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000329586700058
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51799]
专题	中国科学院化学研究所
通讯作者	Song, Wei-Guo
作者单位	Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Yan,Zhang, Xing,Ge, Qian-Qing,et al. ITO@Cu2S Tunnel Junction Nanowire Arrays as Efficient Counter Electrode for Quantum-Dot-Sensitized Solar Cells[J]. NANO LETTERS,2014,14(1):365-372.
APA	Jiang, Yan.,Zhang, Xing.,Ge, Qian-Qing.,Yu, Bin-Bin.,Zou, Yu-Gang.,...&Hu, Jin-Song.(2014).ITO@Cu2S Tunnel Junction Nanowire Arrays as Efficient Counter Electrode for Quantum-Dot-Sensitized Solar Cells.NANO LETTERS,14(1),365-372.
MLA	Jiang, Yan,et al."ITO@Cu2S Tunnel Junction Nanowire Arrays as Efficient Counter Electrode for Quantum-Dot-Sensitized Solar Cells".NANO LETTERS 14.1(2014):365-372.