INFRARED STUDIES OF ROOM-TEMPERATURE DEPOSITION OF HYDROGENATED SILICON-OXIDE FILMS IN RF MAGNETRON DISCHARGES

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题名:	INFRARED STUDIES OF ROOM-TEMPERATURE DEPOSITION OF HYDROGENATED SILICON-OXIDE FILMS IN RF MAGNETRON DISCHARGES
作者:	BAO,TL;WU,MS;I,L
贡献者:	物理研究所
关键词:	CHEMICAL VAPOR-DEPOSITION;LASER-ABLATION;THIN-FILM;SIO2-FILMS;ENERGY;DIOXIDE;SIO2;OXIDATION
日期:	1995
上传时间:	2010-07-08 14:09:06 (UTC+8)
出版者:	中央大學
摘要:	The properties of a-SiOx:H thin films deposited at low temperature (similar to 50 degrees C) in a low energy magnetron rf plasma system with Ar/SiH4/O-2 gas mixtures are investigated. In the low pressure regime (about 5 mTorr reactive gases), the surface reaction dominates in the him formation process. As the partial pressure ratio (R(OS)) of oxygen to silane increases, the Si-H related vibrational modes gradually disappear, and the film becomes stoichiometric SiO2 for R(OS)greater than or equal to 1. High quality oxide film can be deposited due to the low pressure environment and the plasma promoted surface process. In the high pressure regime (tens of mTorr) the deposited SiO2 films contain fine particles (tens of nanometer in size) and are porous (15% void) due to the gas phase homogeneous reaction and aggregation. The infrared absorbance spectra with normal and oblique incidence imply different origins of the half width and the shoulder intensity of the 1070 cm(-1) Si-O(s) mode. In comparison with the low pressure dense films, the narrow half width of the high pressure film may be caused by the more ordered local structure which has a narrower distribution of bond angle and length, while the large shoulder intensity may be dominated by the larger (fine particle size) scale disorder. (C) 1995 American Institute of Physics.
關聯:	JOURNAL OF APPLIED PHYSICS
显示于类别:	[物理研究所] 期刊論文

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