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Towards the Identification of the Dominant Donor in GaN
Abstract
We analyze optical absorption, transmission, luminescence, and Raman scattering in $n$-type GaN at hydrostatic pressures up to 30 GPa. The results show freeze-out of free electrons above $\ensuremath{\sim}20\mathrm{GPa}$ due to trapping at levels that are resonant at ambient pressure but become gap states at high pressures. Ab initio calculations show that both the N vacancy and the Ga interstitial undergo this transition at $\ensuremath{\sim}20\mathrm{GPa}$, but the vacancy should be more abundant. The pressure dependence of the yellow luminescence indicates that a transition between a shallow donor and a deep acceptor is involved.
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Citations
Cited by
First-principles calculations for defects and impurities: Applications to III-nitrides
Van de Walle, C. G., & Neugebauer, J. (2004) · Journal of Applied Physics · doi:10.1063/1.1682673 · Cited by 3,257
van der Stam, W., Geuchies, J. J., Altantzis, T., van den Bos, K. H. W., Meeldijk, J. D., Van Aert, S., Bals, S., Vanmaekelbergh, D., & de Mello Donega, C. (2017) · Journal of the American Chemical Society · doi:10.1021/jacs.6b13079 · Cited by 732
Point-defect complexes and broadband luminescence in GaN and AlN
Mattila, T., & Nieminen, R. M. (1997) · Physical Review B · doi:10.1103/physrevb.55.9571 · Cited by 454
Kim, W., Botchkarev, A. E., Salvador, A., Popovici, G., Tang, H., & Morkoç, H. (1997) · Journal of Applied Physics · doi:10.1063/1.365801 · Cited by 168
Metadata
- Authors
- Perlin, P., Suski, T., Teisseyre, H., Leszczynski, M., Grzegory, I., Jun, J., Porowski, S., Bogusławski, P., Bernholc, J., Chervin, J. C., Polian, A., & Moustakas, T. D.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1995-07-10
- Volume
- 75
- Issue
- 2
- Pages
- 296-299
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2055398711
- Cited by
- 299
- References
- 0
- FWCI
- 17.98
- Type
- journal article
- Language
- en
- Open access
- closed
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- Perlin, P., Suski, T., Teisseyre, H., Leszczynski, M., Grzegory, I., Jun, J., Porowski, S., Bogusławski, P., Bernholc, J., Chervin, J. C., Polian, A., & Moustakas, T. D. (1995). Towards the Identification of the Dominant Donor in GaN. Physical Review Letters. https://doi.org/10.1103/physrevlett.75.296
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