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Evidence for Two Mg Related Acceptors in GaN

Monemar, Bo LU ; Paskov, P. P.; Pozina, G.; Hemmingsson, C.; Bergman, J. P.; Kawashima, T.; Amano, H.; Akasaki, I.; Paskova, T. and Figge, S., et al. (2009) In Physical Review Letters 102(23).
Abstract
The optical signatures of Mg-related acceptors in GaN have been revisited in samples specifically grown on bulk GaN templates, to avoid strain broadening of the optical spectra. Bound-exciton spectra can be studied in these samples for Mg concentrations up to [Mg]approximate to 2x10(19) cm(-3). Contrary to previous work it is found that instabilities in the photoluminescence spectra are not due to unstable shallow donors, but to unstable Mg-related acceptors. Our data show that there are two Mg-related acceptors simultaneously present: the regular (stable) substitutional Mg acceptor, and a complex acceptor which is unstable in p-GaN.
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publication status
published
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Physical Review Letters
volume
102
issue
23
publisher
American Physical Society
external identifiers
  • wos:000266977500039
  • scopus:66949170575
ISSN
1079-7114
DOI
10.1103/PhysRevLett.102.235501
language
English
LU publication?
yes
id
df2bc23d-9b3b-42d3-92e8-9ccd52493093 (old id 1441111)
date added to LUP
2009-07-28 11:08:26
date last changed
2017-09-17 05:14:20
@article{df2bc23d-9b3b-42d3-92e8-9ccd52493093,
  abstract     = {The optical signatures of Mg-related acceptors in GaN have been revisited in samples specifically grown on bulk GaN templates, to avoid strain broadening of the optical spectra. Bound-exciton spectra can be studied in these samples for Mg concentrations up to [Mg]approximate to 2x10(19) cm(-3). Contrary to previous work it is found that instabilities in the photoluminescence spectra are not due to unstable shallow donors, but to unstable Mg-related acceptors. Our data show that there are two Mg-related acceptors simultaneously present: the regular (stable) substitutional Mg acceptor, and a complex acceptor which is unstable in p-GaN.},
  articleno    = {235501},
  author       = {Monemar, Bo and Paskov, P. P. and Pozina, G. and Hemmingsson, C. and Bergman, J. P. and Kawashima, T. and Amano, H. and Akasaki, I. and Paskova, T. and Figge, S. and Hommel, D. and Usui, A.},
  issn         = {1079-7114},
  language     = {eng},
  number       = {23},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Evidence for Two Mg Related Acceptors in GaN},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.102.235501},
  volume       = {102},
  year         = {2009},
}