Advanced research into the growth mechanism and optical properties of wurtzite ZnSe quantum dots

	Advanced research into the growth mechanism and optical properties of wurtzite ZnSe quantum dots
	Han D.; Feng B.; Cao J.; Gao M.; Yang S.; Yang J.
	2014
发表期刊	Journal of Materials Science: Materials in Electronics
ISSN	ISBN/09574522
卷号	25 期号:8 页码:3639-3644
摘要	Zinc selenide (ZnSe) quantum dots (QDs) with the hexagonal wurtzite structure were successfully prepared using a safe, controllable ethylenediamine-mediated solvothermal method in the absence of surfactants. This new synthesis process of the wurtzite ZnSe QDs was described and the growth mechanism of QDs was proposed. The room-temperature photoluminescence (PL) spectrum of the wurtzite ZnSe QDs (about 4 nm) showed a strong near-band-edge emission peak at 422 nm. The near-band-edge emission peak was blue-shifted compared to that of the bulk ZnSe due to the quantum confinement effects; the peak also displayed a progressive red-shift with increasing the excitation power and an associated reduction in peak energy of up to 300 meV. Band gap renormalization in the electron-hole plasma regime might be used to explain this phenomenon. No previous published research regarding the observed excitation-power-dependent PL properties of the wurtzite ZnSe QDs had been found. Our experimental results contributed valuable insights into the optical properties of the wurtzite ZnSe QDs; with potential applications in optoelectronics and other areas where advanced uniformly-structured nanocrystalline semiconductor materials were finding increased use. 2014 Springer Science+Business Media New York.
收录类别	EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/43713
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Han D.,Feng B.,Cao J.,et al. Advanced research into the growth mechanism and optical properties of wurtzite ZnSe quantum dots[J]. Journal of Materials Science: Materials in Electronics,2014,25(8):3639-3644.
APA	Han D.,Feng B.,Cao J.,Gao M.,Yang S.,&Yang J..(2014).Advanced research into the growth mechanism and optical properties of wurtzite ZnSe quantum dots.Journal of Materials Science: Materials in Electronics,25(8),3639-3644.
MLA	Han D.,et al."Advanced research into the growth mechanism and optical properties of wurtzite ZnSe quantum dots".Journal of Materials Science: Materials in Electronics 25.8(2014):3639-3644.

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