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Abstract

Hydrogenated and unhydrogenated DLC films prepared under various conditions have been analysed by electron energy-loss (EELS), infra-red (IR) and optical spectroscopy and by nanoindentation. It was observed from EELS that the height h of the minimum between the elastic peak E(o) and the pi-pi(*) excitation peak is linearly dependent on E(g) and correlates well with the sp(3)/sp(2) ratio. h is interpreted as a measure of the dangling bond (db) scattering in the film which is supported by its inverse dependence on hydrogen content. It was also observed that the relative intensity of the pi-pi(*) peak is linearly dependent on E(g), supporting the view that E(g) depends on hydrogenation of sp(2) bonds. Measurement of the plasmon energy E(p2) indicates film densities (relative to graphite) ranging from 66% for hydrogenated to 75% for unhydrogenated films.

Additional information

Authors: MAYDELL E A, University of Strathclyde, Department of Metallurgy and Engineering Materials, Glasgow (GB);DUNLOP E D, University of Strathclyde, Department of Physics and Applied Physics, Glasgow (GB);FABIAN D J, University of Strathclyde, Department of Physics and Applied Physics, Glasgow (GB);GISSLER W, JRC Ispra (IT);HAUPT J, JRC Ispra (IT)
Bibliographic Reference: Paper presented: DIAMOND 92, Heidelberg (DE), August 31 - September 4, 1992
Availability: Available from (1) as Paper EN 37084 ORA
Record Number: 199211365 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en