Photoluminescence and Raman Spectroscopy in Hydrogenated Carbon Films
Marchon, Bruno, Gui, Jing, Grannen, Kevin, Rauch, Gary C, Ager III, Joel W, Silva, S R P and Robertson, John (1997) Photoluminescence and Raman Spectroscopy in Hydrogenated Carbon Films IEEE Transactions on Magnetics, 33 (5). pp. 3148-3150. ISSN 0018-9464
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a-C:H films prepared by DC-magnetron sputtering in an H2:Ar mixture exhibit strong photoluminescence (PL) peaks superimposed upon the Raman scattering spectrum. PL becomes observable at a hydrogen content of ca. 34%, and increases exponentially thereafter, driven by the progressive saturation of carbon dangling bonds. In this %H range, hardness and elastic modulus decrease and CSS durability reaches an optimum. The Raman G peak position is very sensitive to deposition temperature (shift of 0.1 cm-1/°C) and was found to correlate with the sp3 /sp2 bonding ratio as measured by EELS, and therefore can also be used as a predictor of carbon tribological performance
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This article was published when S R P Silva was with the Department of Engineering, University of Cambridge
|Divisions:||Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre|
|Deposited By:||Melanie Hughes|
|Deposited On:||05 Oct 2010 11:36|
|Last Modified:||24 Jan 2013 09:09|
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