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Photoluminescence Spectroscopy of Diamond Films

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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 oxygen-acetylene 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.

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Authors and Affiliations

  1. Naval Research Laboratory, Washington, DC, 20375-5000, United States

    J. A. Freitas Jr, J. E. Butler, S. G. Bishop, W. A. Carrington & U. Strom

  2. Sachs/Freeman Associates, Landover, MD, 20785-5396, USA

    J. A. Freitas Jr

  3. University of Dlinois, Urbana-Champaign, Urbana, IL, 61801, United States

    S. G. Bishop

  4. University of South Florida, Tampa, FL, 33620, United States

    W. A. Carrington

Authors
  1. J. A. Freitas Jr
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  2. J. E. Butler
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  3. S. G. Bishop
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  4. W. A. Carrington
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  5. U. Strom
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Freitas, J.A., Butler, J.E., Bishop, S.G. et al. Photoluminescence Spectroscopy of Diamond Films. MRS Online Proceedings Library 162, 237–242 (1989). https://doi.org/10.1557/PROC-162-237

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