A mapping investigation was performed with photoluminescence-detected electron paramagnetic resonance (PL-EPR) via the yellow luminescence on nominally undoped, metal–organic vapor-phase epitaxy-grown GaN on sapphire. From the results, it is concluded that the PL-EPR signals observed in these samples represent different recombination channels which contribute to the yellow luminescence. Therefore, our results do not support the model of Glaser et al. [Phys. Rev. B 51, 13326 (1995)] for the mechanism of the yellow luminescence proposed recently.

1.
S. Nakamura and G. Fasol, The Blue Laser Diode (Springer, New York, 1997).
2.
T.
Ogino
and
M.
Aoki
,
Jpn. J. Appl. Phys.
19
,
2395
(
1980
).
3.
E. R.
Glaser
,
T. A.
Kennedy
,
K.
Doverspike
,
L. B.
Rowland
,
D. K.
Gaskill
,
J. A.
Freitas
,
M. A.
Khan
,
D. T.
Olson
,
J. N.
Kuznia
, and
D. K.
Wickenden
,
Phys. Rev. B
51
,
13326
(
1995
).
4.
D. M.
Hofmann
,
D.
Kovalev
,
G.
Streude
,
B. K.
Meyer
,
A.
Hoffmann
,
L.
Eckey
,
R.
Heitz
,
T.
Detchprohn
,
H.
Amano
, and
I.
Akasaki
,
Phys. Rev. B
52
,
16702
(
1995
).
5.
T.
Suski
,
P.
Perlin
,
H.
Teisseyre
,
M.
Leszczynski
,
I.
Grzegory
,
J.
Jun
,
M.
Bockowski
, and
S.
Porowski
,
Appl. Phys. Lett.
67
,
2188
(
1995
).
6.
E.
Calleja
,
F. J.
Sánchez
,
D.
Basak
,
M. A.
Sánchez-Garcia
,
E.
Muñoz
,
I.
Izpura
,
F.
Calle
,
J. M. G.
Tijero
,
J. L.
Sánchez-Rojas
,
B.
Beaumont
,
P.
Lorenzini
, and
P.
Gibart
,
Phys. Rev. B
55
,
4689
(
1997
).
7.
K.
Saarinen
,
T.
Laine
,
S.
Kuisma
,
J.
Nissilä
,
P.
Hautojärvi
,
L.
Dobrzynski
,
J. M.
Baranowski
,
K.
Pakula
,
R.
Stepniewski
,
M.
Wojdak
,
A.
Wysmolek
,
T.
Suski
,
M.
Leszcynski
,
I.
Grzegory
, and
S.
Porowski
,
Phys. Rev. Lett.
79
,
3030
(
1997
).
8.
C. G.
van de Walle
and
J.
Neugebauer
,
Mater. Res. Soc. Symp. Proc.
,
449
,
861
(
1997
).
9.
F. K.
Koschnick
,
K.
Michael
,
J.-M.
Spaeth
,
B.
Beaumont
,
P.
Gibart
,
J.
Off
,
A.
Sohmer
, and
F.
Scholz
,
J. Cryst. Growth
189/190
,
561
(
1998
).
10.
W. E.
Carlos
,
J. A.
Freitas
, Jr.
,
M. Asif
Khan
,
D. T.
Olson
, and
J. N.
Kuznia
,
Phys. Rev. B
48
,
17878
(
1993
).
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