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Photoluminescence Spectroscopy of Diamond Films

Published online by Cambridge University Press:  26 February 2011

J. A. Freitas Jr ,
J. E. Butler ,
S. G. Bishop ,
W. A. Carrington  and
U. Strom
J. A. Freitas Jr
Affiliation:
Sachs/Freeman Associates, Landover, MD 20785-5396
J. E. Butler
Affiliation:
Naval Research Laboratory, Washington, DC 20375-5000
S. G. Bishop
Affiliation:
University of Illinois, Urbana- Champagn, IL 61801
W. A. Carrington
Affiliation:
University of South, Florida,- Tampa, FL33620
U. Strom
Affiliation:
Naval Research Laboratory, Washington, DC 20375-5000
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Abstract

Photoluminescence spectroscopy has been used to characterize polycrystalline diamond films prepared by filament assisted chemical deposition and by combustion (in an oxygenacetylene flame) techniques. The luminescence spectra of the chemical vapor deposited films are dominated by a defect band possibly associated with a neutral vacancy with a strong zero phonon line at 1.68 eV and weak phonon replicas at lower energies. The combustion films exhibit two additional luminescence bands with zero phonon lines at 1.95 and 2.16 eV. The 1.95 eV band has been tentatively assigned to a nitrogen-vacancy pair. We have also observed a strong dependence of the PL spectra radially across a given combustion film and associated this with details of the flame chemistry.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 162: Symposium F – Diamond, Silicon Carbide and Related Wide Bandgap Semiconductors , 1989 , 237
Copyright
Copyright © Materials Research Society 1990

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References

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