A systematic study has been carried out on emission spectra of heavily Si-doped InGaN multiquantum wells with different degree of potential fluctuation of InGaN in the lateral plane by the use of the various excitation sources. It is demonstrated that the quantum-confined Stark effect due to the piezoelectric field plays no serious role in optical spectra under appropriate doping conditions and, then, the degree of potential fluctuation of InGaN alloys is clearly reflected in spontaneous emission spectra.
REFERENCES
1.
For a review, see S. Nakamura and G. Fasol, The Blue Laser Diode (Springer, Berlin, 1997);
S.
Nakamura
, M.
Senoh
, S.
Nagahama
, N.
Iwasa
, T.
Yamada
, T.
Matsushita
, H.
Kiyoku
, Y.
Sugimoto
, T.
Kozaki
, H.
Umemoto
, N.
Sano
, and K.
Chocho
, Jpn. J. Appl. Phys., Part 2
36
, L1568
(1997
);S.
Nakamura
, M.
Senoh
, S.
Nagahama
, N.
Iwasa
, T.
Yamada
, T.
Matsushita
, H.
Kiyoku
, Y.
Sugimoto
, T.
Kozaki
, H.
Umemoto
, N.
Sano
, and K.
Chocho
, Appl. Phys. Lett.
72
, 211
(1998
).2.
T.
Takeuchi
, H.
Takeuchi
, S.
Sota
, H.
Sakai
, H.
Amano
, and I.
Akasaki
, Jpn. J. Appl. Phys., Part 2
36
, L177
(1997
).3.
T.
Takeuchi
, S.
Sota
, M.
Katsuragawa
, M.
Komori
, H.
Takeuchi
, H.
Amano
, and I.
Akasaki
, Jpn. J. Appl. Phys., Part 2
36
, L382
(1997
).4.
T. Takeuchi, S. Sota, H. Sakai, H. Amano, and I. Akasaki, in Proceedings of the International Conference on Nitride Semiconductors, Tokushima, Japan, Oct. 27–31, 1997, pp. 418–419.
5.
H. Sakai, T. Takeuchi, S. Sota, M. Katsuragawa, M. Komori, H. Amano, and I. Akasaki, in Proceedings of the International Conference on Nitride Semiconductors, Tokushima, Japan, Oct. 27–31, 1997, pp. 456–457.
6.
Our findings are summarized in a previous paper [S. Chichibu, T. Sota, K. Wada, and S. Nakamura, J. Vac. Sci. Technol. B 16 (to be published).
7.
M.
Smith
, G. D.
Chen
, H. X.
Jiang
, M.
Asif Khan
, and Q.
Chen
, Appl. Phys. Lett.
69
, 2837
(1997
).8.
F.
Scholz
, V.
Harle
, F.
Steuber
, A.
Sohmer
, H.
Bolay
, V.
Syganow
, A.
Dorne
, J.-S.
Im
, A.
Hangleiter
, J. Y.
Duboz
, P.
Galtier
, E.
Rosencher
, O.
Ambacher
, D.
Brunner
, and H.
Lakner
, Mater. Res. Soc. Symp. Proc.
449
, 3
(1997
).9.
Y.
Narukawa
, Y.
Kawakami
, Sz.
Fujita
, and Sg.
Fujita
, Phys. Rev. B
55
, R1938
(1997
).10.
Y.
Narukawa
, Y.
Kawakami
, M.
Funato
, Sz.
Fujita
, and Sg.
Fujita
, Appl. Phys. Lett.
70
, 981
(1997
).11.
S.
Nakamura
, T.
Mukai
, M.
Senoh
, S.
Nagahama
, and N.
Iwasa
, J. Appl. Phys.
74
, 3911
(1993
).12.
The change of the lowest resonance energy with is not serious even when we consider the exact states in the MQW.
13.
F.
Ponce
, S.
Galloway
, W.
Goetz
, and R.
Kern
, Mater. Res. Soc. Symp. Proc.
482
, 625
(1998
).
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1998
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