QQ客服 官方微博 反馈留言

	Facile conversion of silicon nitride nanobelts into sandwich-like nanosaws II: growth mechanism and optical properties
	Guo, Gang Feng ; He, Mingsheng ; Kong, Xiang Yang ; Lin, Hong ; Li, Jianbao ; Fan, Li-Zhen
	2010-10-12 ; 2010-10-12
关键词	ALPHA-SI3N4 CERAMICS AMMONIA Materials Science, Multidisciplinary Physics, Applied
中文摘要	In a previous paper (G.F. Guo et al., Appl. Phys. A, 2009), the microstructures of sandwich-like nanosaws have been revealed clearly. Here, the growth mechanism and optical properties of Si3N4 sandwich-like nanosaws were further investigated. It is assumed that the growth atmosphere with a large amount of N-* (active nitrogen) from the decomposition of NH3 would be the key factor for the formation of sandwich-like nanosaws during the catalyst-assisted pyrolysis of the polymeric precursors. From the characterizations of TEM together with the systematic composition analysis, we found that a large excess of nitrogen element occurred in the central "soldering" region as well as high density defects, which induced the asymmetric growth of nanoteeth on the original nanobelt sidewall, forming into a sandwich-like nanosaw morphology. The unique optical properties of sandwich-like nanosaws could be attributed from the presence of a large amount of nitrogen dangling bond defects in the central "soldering" region, and a new optical band-gap model was proposed for the interpretation of the photoluminescence spectra.
语种	英语 ; 英语
出版者	SPRINGER ; NEW YORK ; 233 SPRING ST, NEW YORK, NY 10013 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78419]
专题	清华大学
推荐引用方式 GB/T 7714	Guo, Gang Feng,He, Mingsheng,Kong, Xiang Yang,et al. Facile conversion of silicon nitride nanobelts into sandwich-like nanosaws II: growth mechanism and optical properties[J],2010, 2010.
APA	Guo, Gang Feng,He, Mingsheng,Kong, Xiang Yang,Lin, Hong,Li, Jianbao,&Fan, Li-Zhen.(2010).Facile conversion of silicon nitride nanobelts into sandwich-like nanosaws II: growth mechanism and optical properties..
MLA	Guo, Gang Feng,et al."Facile conversion of silicon nitride nanobelts into sandwich-like nanosaws II: growth mechanism and optical properties".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。