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Comparison of fluorocarbon film deposition by pulsed/continuous wave and downstream radio frequency plasmas

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Comparison of fluorocarbon film deposition by pulsedcontinuous wave and downstream radio frequency plasmas.htm (413bytes)
Date
2010-08
Author
Gu,Jiandong
Feng,Zhiqing
Niu,Jinhai
Li,Dongming
Benstetter,Guenther
Liu,Dongping
刘东平
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  • 物理技术-已发表论文 [4223]
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Abstract
Fluorocarbon (FC) films have been deposited using pulsed and continuous wave (cw) radio frequency (rf) plasmas fed with hexafluoroethane (C2F6), octafluoropropane (C3F8), or octafluorocyclobutane (C4F8). The effects of feed gases used, discharge pressure, rf power, substrate positions and discharge modes (pulsed or cw) on the deposited films are examined. Film properties are determined using X-ray photoelectron spectroscopy, atomic force microscopy, and static contact angle measurements. The contact angles of FC films are well related to their compositions and structures. Feed gases used, discharge pressure, rf power, substrate positions and discharge modes strongly affect the morphology of the resulting film, as revealed by atomic force microscopy. Optical emission spectrometry measurements were performed to in-situ characterize the gas-phase compositions of the plasmas and radicals' emission intensities during film deposition. Correlations between film properties, gas-phase plasma diagnostic data, and film growth processes were discussed. The film growth in pulsed or downstream plasmas was controlled by the surface migration of radicals, such as CF2 towards nucleation centers, which result in the deposition of FC films with less cross-linked nature and rougher surfaces. These results demonstrate that it is possible to control film compositions and surface structure by changing deposition parameters. (C) 2010 Elsevier Ltd. All rights reserved.
Citation
VACUUM,2010,85(2):253-262
URI
http://dx.doi.org/doi:10.1016/j.vacuum.2010.06.005
https://dspace.xmu.edu.cn/handle/2288/10276

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