Enhancement of electron transfer from CdSe core/shell quantum dots to TiO2 films by thermal annealing

	Enhancement of electron transfer from CdSe core/shell quantum dots to TiO2 films by thermal annealing
	Shao C.; Meng X.; Jing P.; Sun M.; Zhao J.; Li H.
	2013
发表期刊	Journal of Luminescence
ISSN	ISBN/00222313
期号	142
摘要	We demonstrated the enhancement of electron transfer from CdSe/ZnS core/shell quantum dots (QDs) to TiO2 films via thermal annealing by means of steady-state and time-resolved photoluminescence (PL) spectroscopy. The significant decrease in PL intensities and lifetimes of the QDs on TiO 2 films was clearly observed after thermal annealing at temperature ranging from 100 C to 300 C. The obtained rates of electron transfer from CdSe core/shell QDs with red, yellow, and green emissions to TiO2 films were significantly enhanced from several times to an order of magnitude (from 107 s-1 to 108 s-1). The improvement in efficiencies of electron transfer in the TiO2/CdSe QD systems was also confirmed. The enhancement could be considered to result from the thermal annealing reduced distance between CdSe QDs and TiO2 films. The experimental results revealed that thermal annealing would play an important role on improving performances of QD based optoelectronic devices. 2013 Elsevier B.V.
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/40647
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Shao C.,Meng X.,Jing P.,et al. Enhancement of electron transfer from CdSe core/shell quantum dots to TiO2 films by thermal annealing[J]. Journal of Luminescence,2013(142).
APA	Shao C.,Meng X.,Jing P.,Sun M.,Zhao J.,&Li H..(2013).Enhancement of electron transfer from CdSe core/shell quantum dots to TiO2 films by thermal annealing.Journal of Luminescence(142).
MLA	Shao C.,et al."Enhancement of electron transfer from CdSe core/shell quantum dots to TiO2 films by thermal annealing".Journal of Luminescence .142(2013).

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