Exploring the Effect of Band Alignment and Surface States on Photoinduced Electron Transfer from CuInS2/CdS Core/Shell Quantum Dots to TiO2 Electrodes

	Exploring the Effect of Band Alignment and Surface States on Photoinduced Electron Transfer from CuInS2/CdS Core/Shell Quantum Dots to TiO2 Electrodes
	Sun M. Y.; Zhu D. H.; Ji W. Y.; Jing P. T.; Wang X. Y.; Xiang W. D.; Zhao J. L.
	2013
发表期刊	Acs Applied Materials & Interfaces
ISSN	ISBN/1944-8244
卷号	5 期号:23
摘要	Photoinduced electron transfer (ET) processes from CuInS2/CdS core/shell quantum dots (QDs) with different core sizes and shell thicknesses to TiO2 electrodes were investigated by time-resolved photoluminescence (PL) spectroscopy. The ET rates and efficiencies from CuInS2/CdS QDs to TiO2 were superior to those of CuInS2/ZnS QDs. An enhanced ET efficiency was surprisingly observed for 2.0 nm CuInS2 core QDs after growth of the CdS shell. On the basis of the experimental and theoretical analysis, the improved performances of CuInS2/CdS QDs were attributed to the passivation of nonradiative traps by overcoating shell and enhanced delocalization of electron wave function from core to CdS shell due to lower conduction band offset. These results indicated that the electron distribution regulated by the band alignment between core and shell of QDs and the passivation of surface defect states could improve ET performance between donor and acceptor.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/40657
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Sun M. Y.,Zhu D. H.,Ji W. Y.,et al. Exploring the Effect of Band Alignment and Surface States on Photoinduced Electron Transfer from CuInS2/CdS Core/Shell Quantum Dots to TiO2 Electrodes[J]. Acs Applied Materials & Interfaces,2013,5(23).
APA	Sun M. Y..,Zhu D. H..,Ji W. Y..,Jing P. T..,Wang X. Y..,...&Zhao J. L..(2013).Exploring the Effect of Band Alignment and Surface States on Photoinduced Electron Transfer from CuInS2/CdS Core/Shell Quantum Dots to TiO2 Electrodes.Acs Applied Materials & Interfaces,5(23).
MLA	Sun M. Y.,et al."Exploring the Effect of Band Alignment and Surface States on Photoinduced Electron Transfer from CuInS2/CdS Core/Shell Quantum Dots to TiO2 Electrodes".Acs Applied Materials & Interfaces 5.23(2013).

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