Effect of Hole Transporting Materials on Photoluminescence of CdSe Core/Shell Quantum Dots

	Effect of Hole Transporting Materials on Photoluminescence of CdSe Core/Shell Quantum Dots
其他题名	论文其他题名
	Qu Y. Q.; Zhang Q. B.; Jing P. T.; Sun Y. J.; Zeng Q. H.; Zhang Y. L.; Kong X. G.
	2009
发表期刊	Spectroscopy and Spectral Analysis
ISSN	1000-0593
卷号	29 期号:12 页码:3204-3207
摘要	Photoluminescence quenching of colloidal CdSe core/shell quantum dots in the presence of hole transporting materials was studied by means of steady state and time resolved photoluminescence spectroscopy. With increasing hole transporting materials concentration in the CdSe core/shell quantum dot Solution, the photoluminescence intensity and lifetime decreased gradually. The photoluminescence quenching of CdSe/ZnSe quantum dots with adding hole transporting material N,N'-bis(1-naphthyl)N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB) is more efficient than N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'-biphenyl-4'-diamine (TPD). And compared with CdSe core/shell quantum dots with ZnSe shell. the ZnS shell is an effective one oil the surface of CdSe quantum dots for reducing photoluminescence quenching efficiency when interacting with hole transporting material TPD. Based on the analysis. there are two pathways in the photoluminescence quenching process: static quenching and dynamic quenching. The static quenching results from the decrease in the number of the emitting centers, and the dynamic quenching is caused by the hole transfer from quantum dots to hole transporting materials molecules. The efficiency of the photoluminescence quenching in CdSe core/shell quantum dots is strongly dependent on the structure of the shells and the HOMO levels of the hole transporting materials. The results are important for understanding the nature of quantum dots surface and the interaction of quantum dots and hole transporting materials.
收录类别	SCI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/25655
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Qu Y. Q.,Zhang Q. B.,Jing P. T.,et al. Effect of Hole Transporting Materials on Photoluminescence of CdSe Core/Shell Quantum Dots[J]. Spectroscopy and Spectral Analysis,2009,29(12):3204-3207.
APA	Qu Y. Q..,Zhang Q. B..,Jing P. T..,Sun Y. J..,Zeng Q. H..,...&Kong X. G..(2009).Effect of Hole Transporting Materials on Photoluminescence of CdSe Core/Shell Quantum Dots.Spectroscopy and Spectral Analysis,29(12),3204-3207.
MLA	Qu Y. Q.,et al."Effect of Hole Transporting Materials on Photoluminescence of CdSe Core/Shell Quantum Dots".Spectroscopy and Spectral Analysis 29.12(2009):3204-3207.

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