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Dipole Relaxation Current in N-Type AIxGa1-xAs

Published online by Cambridge University Press:  22 February 2011

Luis V.A. Scalvi ,
L. Oliveira  and
M. Siu Li
Luis V.A. Scalvi
Affiliation:
Departamento de Física, UNESP - Bauru, Cx. Postal 473, 17033 Bauru - SP, Brazil
L. Oliveira
Affiliation:
Departamento de Física e Ciência dos Materiais, Instituto de Física e Química de Sóo Carlos - USP, Cx. Postal 369, 13560 Sdo Carlos - SP, Brazil
M. Siu Li
Affiliation:
Departamento de Física e Ciência dos Materiais, Instituto de Física e Química de Sóo Carlos - USP, Cx. Postal 369, 13560 Sdo Carlos - SP, Brazil
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Abstract

Thermally stimulated depolarization current (TSDC) spectra are reported for AlxGa1-xAs alloys with direct and indirect bandgap for the first time. The experimental data reveal the presence of electric dipoles in both samples which are interpreted by using the negative-U DX center model. These data are fitted by a relaxation time distribution approach yielding average activation energies in close coincidence with the DX center binding energy value.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 325: Symposium L – Physics and Applications of Defects in Advanced Semiconductors , 1993 , 285
Copyright
Copyright © Materials Research Society 1994

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References

[1] Chadi, D.J. and Chang, K.J., Phys. Rev. Lett. 61, 873 (1988); Phys Rev. B 39, 10063 (1989)CrossRefGoogle Scholar
[2] Maude, D.K., Eaves, L., Foster, T.J. and Portal, J.C., Phys Rev. Lett. 62, 1922 (1989)CrossRefGoogle Scholar
[3] Maude, D.K., Portal, J.C., Dmowski, L., Foster, T.J., Eaves, L., Nathan, M., Heiblum, M., Havris, J.J. and Beal, R.B., Phys. Rev. Lett. 55, 815 (1987)CrossRefGoogle Scholar
[4] O'Reilly, E.P., Appl. Phys. Lett. 55, 1409 (1989)CrossRefGoogle Scholar
[5] Havriliak, S. and , Negami, Polymer 8, 161 (1967)CrossRefGoogle Scholar
[6] Chand, N., Hendersen, T., Klem, J., Masselink, W. T., Fisch, R., Chang, Y.C. and Morkog, H., Phys. Rev. B 30, 4481 (1984)CrossRefGoogle Scholar
[7] Scalvi, L.V.A., Oliveira, L., Minami, E. and Li, M. Siu, Appl. Phys. Lett. 63, (in press)Google Scholar
[8] Oliveira, L., Magna, P., Gallo, H.J.H., Domenicucci, E.C. and Li, M. Siu, phys. stat. solidi (b) 171, 141 (1992)CrossRefGoogle Scholar
[9] Weperen, W. van and Hartog, H.W. den, Phys. Rev. B. 18, 2857 (1978)CrossRefGoogle Scholar
[10] Scalvi, L.V.A. and Minami, E., phys. stat. solidi (a) 139, 145 (1993)CrossRefGoogle Scholar
[11] Dmochowski, J.E., Dobackewski, L., Langer, J.M. and Jantsch, W., Phys. Rev. B 40, 9671 (1989)CrossRefGoogle Scholar
[12] Dobaczewski, L. and Kaczor, P., Phys. Rev. B 44, 8621 (1991)CrossRefGoogle Scholar