Raman investigation of amorphous carbon in diamond film treated by laser

	Raman investigation of amorphous carbon in diamond film treated by laser
其他题名	论文其他题名
	Wu Q. H.; Yu L.; Ma Y. R.; Liao Y.; Fang R. C.; Zhang L. G.; Chen X. L.; Wang K.
	2003
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	93 期号:1 页码:94-100
摘要	Micro-Raman spectroscopy was employed to investigate the structural changes of diamond films prepared by hot filament chemical vapor deposition and treated by femtosecond (fs) laser and nanosecond (ns) lasers. Breit-Wigner-Fano and Lorentzian line shape simulations were used to fit the spectra. For 266 nm ns laser treated samples, increasing laser power density results in the transformation of amorphous carbons in diamond films into nanocarbon clusters whose size increases and saturates rapidly at around 5.1 nm. At the same time, the Raman G peak position considerably shifts upwardly with increasing laser power density. The different change behavior of the nanocarbons and G peak is interpreted in light of the charge transfer from the graphite pi bands to the localized edge states. As the 266 nm laser power density is high enough, a Raman peak in the range of 1150-1200 cm(-1) appears, which is attributed to the presence of amorphous diamond. In the case of fs laser treated samples, much more power density (>15 TW/cm(2)) is needed to transform the amorphous carbon into nanocarbon phases. With increasing fs laser power density, the diamond peak is broadened and downshifted due to the presence of nanocrystalline diamond produced by the high laser power density. (C) 2003 American Institute of Physics.
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/181722/26835
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wu Q. H.,Yu L.,Ma Y. R.,et al. Raman investigation of amorphous carbon in diamond film treated by laser[J]. Journal of Applied Physics,2003,93(1):94-100.
APA	Wu Q. H..,Yu L..,Ma Y. R..,Liao Y..,Fang R. C..,...&Wang K..(2003).Raman investigation of amorphous carbon in diamond film treated by laser.Journal of Applied Physics,93(1),94-100.
MLA	Wu Q. H.,et al."Raman investigation of amorphous carbon in diamond film treated by laser".Journal of Applied Physics 93.1(2003):94-100.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Wu-2003-Raman invest（343KB）			开放获取	--	浏览下载