Assessment of oxygen in gallium arsenide by infrared local vibrational mode spectroscopy
J. SchneiderFraunhofer-Institut für Angewandte Festkörperphysik, Eckerstrasse 4, D-7800 Freiburg, West GermanyB. DischlerFraunhofer-Institut für Angewandte Festkörperphysik, Eckerstrasse 4, D-7800 Freiburg, West GermanyH. SeelewindFraunhofer-Institut für Angewandte Festkörperphysik, Eckerstrasse 4, D-7800 Freiburg, West GermanyP. M. MooneyFraunhofer-Institut für Angewandte Festkörperphysik, Eckerstrasse 4, D-7800 Freiburg, West GermanyJ. ŁagowskiMassachusetts Institute of Technology, Cambridge, Massachusetts 02139M. MATSUIMassachusetts Institute of Technology, Cambridge, Massachusetts 02139Darren R. BeardJ. J. Thomson Physical Laboratory, University of Reading, Box 220, Whiteknights, Reading RG6 2AF, United KingdomR.C. NewmanJ. J. Thomson Physical Laboratory, University of Reading, Box 220, Whiteknights, Reading RG6 2AF, United Kingdom
1989en
ABI
Аннотация
Two infrared local vibrational mode (LVM) absorption lines occurring at 715 and 845 cm−1 shift to 679 and 802 cm−1 in gallium arsenide doped with 18O, proving that the lines arise from the vibrations of oxygen impurities. The 715 cm−1 line exhibits a triplet 69,71Ga isotope fine structure consistent with that expected from a quasi-substitional VAs-O center. The 845 cm−1 line appears as a closely spaced doublet expected for a bonded interstitial oxygen atom.
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