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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

Item Type: Article
Additional Information: ©1997 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

This article was published when S R P Silva was with the Department of Engineering, University of Cambridge

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Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Melanie Hughes
Date Deposited: 05 Oct 2010 10:36
Last Modified: 23 Sep 2013 18:38

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