Abstract
The low temperature (77 K) photoluminescence characteristics of Al x Ga1-x N-GaN strained layer quantum wells with differentx values grown by metalorganic chemical vapor deposition (MOCVD) were investigated. The photoluminescence spectra were useful in analyzing both quantum confinement effects and strain induced energy shifts. The strain induced shifts were found to be a strong function of aluminum compositionx. A model was developed to calculate the strain induced bandgap shifts atk = 0. The values predicted by this model which took into account the wurtzite crystal structure of the material system, were in good agreement with (i.e. within 2 meV of) the experimentally measured shifts.
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N. G. Anderson, W. D. Laidig, G. Lee, Y. C. Lo and M. Ozturk, Mat. Res. Soc. Symp. Proc.37, 223 (1985).
R. M. Kolbas, N. G. Anderson, W. D. Laidig, Y. Sin, Y. C. Lo, K. Y. Hsieh and Y. J. Yang, IEEE J. Quantum Electron24, 1605 (1988).
Hiromitsu Asai and Kunishige Oe, J. Appl. Phys.54, 2052 (1983).
M. A. Khan, R. A. Skogman, J. M. Van Hove, S. Krishnankutty and R. M. Kolbas, Appl. Phys. Lett.56, 1257 (1990).
Z. Sitar, Ph.D. Dissertation, Dept. Mater. Sci. and Eng., North Carolina State University, 1991.
S. Krishnankutty, R. M. Kolbas, M. A. Khan, J. N. Kuznia, J. M. Van Hove and D. T. Olson, submitted for publication to the J. Electron. Mater.
G. E. Pikus and G. E. Bir, Sov. Phys. Solid State1, 136 (1959).
Landolt-Bornstein, New Series, Vol. 17, Semiconductors sub vol. a, Physics of Group IV elements and III–V Compounds (Springer-Verlag, Berlin, Heidelberg, New York, 1982).
V. A. Savastenko and A. U. Sheleg, Phys. Stat. Solidi (a)48, K135 (1978).
A. U. Sheleg and V. A. Savastenko, Izv. Akad. Nauk SSR, Neorg Mater.15, no. 9, 1598 (1979).
D. L. Camphausen and G. A. N. Connell, J. Appl. Phys.42, 4438 (1971).
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Krishnankutty, S., Kolbas, R.M., Khan, M.A. et al. Photoluminescence characterization of AlGaN-GaN pseudomorphic quantum wells and calculation of strain induced bandgap shifts. J. Electron. Mater. 21, 609–612 (1992). https://doi.org/10.1007/BF02655428
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DOI: https://doi.org/10.1007/BF02655428