Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43712
標題: Characteristics of carbon coatings on optical fibers prepared by plasma enhanced chemical vapor deposition using different argon/methane ratios
作者: Lin, H.C.
薛顯宗
Shiue, S.T.
Cheng, Y.H.
Yang, T.J.
Wu, T.C.
Lin, H.Y.
關鍵字: diamond-like carbon
amorphous hydrogenated carbon
induced stress
voids
h thin-films
substrate-temperature
thermal-stresses
raman-scattering
graphite
strength
pecvd
期刊/報告no:: Carbon, Volume 45, Issue 10, Page(s) 2004-2010.
摘要: The effect of argon/methane ratios on the characteristics of carbon coatings on optical fibers prepared by plasma enhanced chemical vapor deposition is investigated. The argon/methane ratios are selected at 0, 1, 2, 4, 6, and 8. Results show that if the argon/methane ratio increases from 0 to 4, the deposition process is mainly sustained by the Penning effect. The Penning effect enhances the dissociation of the hydrocarbon gas molecules. The carbon coating shifts to the graphite-like carbon and the surface of the carbon coating becomes smoother. As the argon/methane ratio increases from 4 to 8, etching becomes more important. The sp(2) C=C bonding in the carbon coating transforms from order into disorder. Because the disordered sp2 C=C bonding increases, the surface of the carbon coating becomes rougher. When the argon/methane ratio is 4, the surface roughness of the carbon coating is a minimum, while the water contact angle of carbon coating is a maximum. At this argon/methane ratio, the carbon coating has the best ability to minimize low temperature induced delamination or microcracks, so is the best for the production of a hermetically sealed optical fiber coating. (c) 2007 Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/11455/43712
ISSN: 0008-6223
文章連結: http://dx.doi.org/10.1016/j.carbon.2007.06.003
Appears in Collections:材料科學與工程學系

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