Strong ultraviolet and green photoluminescence from SiC/SiO2 core-shell nanowires

	Strong ultraviolet and green photoluminescence from SiC/SiO2 core-shell nanowires
	Liu X.; Cao L. Z.; Song H.; Jiang H.
	2014
发表期刊	Physica E-Low-Dimensional Systems & Nanostructures
ISSN	ISBN/1386-9477
期号	61 页码:167-170
摘要	SiC/SiO2 core shell nanowires were synthesized on Si (100) substrate by the reaction of methane with silicon dioxide using iron as catalyst. Structural properties of the nanowires were characterized by Scanning electron microscopy, Transmission electron microscopy and X-ray diffraction. The light emitting properties of nanowires were studied by photoluminescence spectroscopy. A sharp ultraviolet peak at 380 nm and an intensive broad green band with defined maximum peak at 505 nm were observed in spectra of as grown nanovvires. In addition, the emission intensity of ultraviolet peak decreased gradually until disappeared, but the green band emission intensity increased gradually when nanovvires further annealed with different durations in oxygen and argon mixed gas atmosphere. The change of emission intensity could be attributed to different origins of photoluminescence peak: the ultraviolet peak originated from the oxygen-vacancy defects in the SiO2 shell and the green band that came from the SiC cores caused by quantum confinement effect. (C) 2014 Elsevier By. All rights reserved.
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/181722/44394
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu X.,Cao L. Z.,Song H.,et al. Strong ultraviolet and green photoluminescence from SiC/SiO2 core-shell nanowires[J]. Physica E-Low-Dimensional Systems & Nanostructures,2014(61):167-170.
APA	Liu X.,Cao L. Z.,Song H.,&Jiang H..(2014).Strong ultraviolet and green photoluminescence from SiC/SiO2 core-shell nanowires.Physica E-Low-Dimensional Systems & Nanostructures(61),167-170.
MLA	Liu X.,et al."Strong ultraviolet and green photoluminescence from SiC/SiO2 core-shell nanowires".Physica E-Low-Dimensional Systems & Nanostructures .61(2014):167-170.

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