Silica nano-rings and nano-hollows: Preparation and UV photoluminescence emission

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	Silica nano-rings and nano-hollows: Preparation and UV photoluminescence emission
	Chen, H ; Li, CR ; Jiao, ZF ; Yu, Z ; Yang, ZM ; Jin, Y ; Li, ZW ; Song, HB ; Gao, YL ; Zhang, YS ; Zhu, JG ; Gong, M ; Sun, XS
刊名	JOURNAL OF NON-CRYSTALLINE SOLIDS
	2008
卷号	354 期号:40-41 页码:4562
关键词	OXIDIZED POROUS SILICON ULTRAVIOLET EMISSION SILVER OXYGEN FILMS SIO2 LUMINESCENCE DEFECTS
ISSN号	0022-3093
通讯作者	Sun, XS (reprint author), Sichuan Univ, Dept Mat Sci, Chengdu 610064, Sichuan, Peoples R China.
中文摘要	By annealing fused silica coated with ultra-thin Ag film, silica nano-rings and nano-hollows were prepared on the substrate. The Ag nano-particles attached on the wall of nano-hollows or embedded in silica were confirmed with energy dispersive spectroscopy and transmission electron microscopy. Besides the well-known characteristic stretching bands of silica, three novel stretching bands around 1579, 1320 and 270 cm(-1) were found in the annealed Ag-coated silica by Raman scattering spectroscopy, which have been attributed to the O-2 in ground state, O-O and metal-oxygen stretching bands, respectively. The formation mechanism of nano-rings and nano-hollows has been discussed based on the experimental results. An ultraviolet photoluminescence emission of 360-370 nm from annealed Ag-coated silica was found when the excitations were 230 nm and 280 nm or longer. The possible photoluminescence emission mechanism has been discussed, which suggests that oxygen excess defects are responsible for the photoluminescence emission, and photoexcitation occurs in the silica as well as in Ag+ ions. (c) 2008 Elsevier B.V. All rights reserved.
收录类别	SCI
资助信息	Analytical Testing Center of SCU; Center Of Super Diamond and Advanced Films (COSDAF) City U Hong Kong [SC2006Z08-001-2]
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/52554]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Chen, H,Li, CR,Jiao, ZF,et al. Silica nano-rings and nano-hollows: Preparation and UV photoluminescence emission[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2008,354(40-41):4562.
APA	Chen, H.,Li, CR.,Jiao, ZF.,Yu, Z.,Yang, ZM.,...&Sun, XS.(2008).Silica nano-rings and nano-hollows: Preparation and UV photoluminescence emission.JOURNAL OF NON-CRYSTALLINE SOLIDS,354(40-41),4562.
MLA	Chen, H,et al."Silica nano-rings and nano-hollows: Preparation and UV photoluminescence emission".JOURNAL OF NON-CRYSTALLINE SOLIDS 354.40-41(2008):4562.