Nitrogen is a deep acceptor in ZnO [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Biological and Environmental Research, 2011. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 20 pages : digital, PDF file
- Additional Creators:
- Washington State University, United States. Department of Energy. Office of Biological and Environmental Research, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Zinc oxide is a promising material for blue and UV solid-state lighting devices, among other applications. Nitrogen has been regarded as a potential p-type dopant for ZnO. However, recent calculations [Lyons, Janotti, and Van de Walle, Appl. Phys. Lett. 95, 252105 (2009)] indicate that nitrogen is a deep acceptor. This paper presents experimental evidence that nitrogen is, in fact, a deep acceptor and therefore cannot produce p-type ZnO. A broad photoluminescence (PL) emission band near 1.7 eV, with an excitation onset of ~2.2 eV, was observed, in agreement with the deep-acceptor model of the nitrogen defect. The deep-acceptor behavior can be explained by the low energy of the ZnO valence band relative to the vacuum level.
- Published through SciTech Connect., 04/14/2011., AIP Advances 1 2 ISSN 2158-3226 AM, and McCluskey, M.D.; Tarun, M.C.; Iqbal, M. Zafar.
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