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Time-Resolved Photoluminescence of CD(1-x)MN(x)SE and CD(1-x)MN(x)TE as a Function of Temperature

Published online by Cambridge University Press:  26 February 2011

J. J. zayhowski ,
R. N. Kershaw ,
D. Ridgley ,
K. Dwight ,
A. Wold ,
R. R. Galazka  and
W. Giriat
J. J. zayhowski
Affiliation:
MIT Lincoln Laboratory, Lexington, Massachusetts 02173-0073
R. N. Kershaw
Affiliation:
Department of Chemistry, Brown University, Providence, Rhode Island 02912
D. Ridgley
Affiliation:
Department of Chemistry, Brown University, Providence, Rhode Island 02912
K. Dwight
Affiliation:
Department of Chemistry, Brown University, Providence, Rhode Island 02912
A. Wold
Affiliation:
Department of Chemistry, Brown University, Providence, Rhode Island 02912
R. R. Galazka
Affiliation:
Institute of Physics, Polish Academy of Science, Warsaw, Poland
W. Giriat
Affiliation:
Centro de Fisica, IVIC, Apartado 1827, Caracas 1000A, Venevuela
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Abstract

The characteristics of the photoluminescence of Cd(1-x)Mn(x)Se (x = 0.05, 0.10, 0.20, 0.30) and Cd(1-x)Mn(x)Te (x = 0.20, 0.30, 0.45) change considerably as the sample temperature is reduced below the exciton-magnetic polaron (EMP) threshold temperature. At low temperatures the formation of magnetic polarons has large effects on the luminescence energy, the radiative lifetime, the radiative efficiency, and the spectral half-width of the luminescence. It is also observed that the formation time of the EMP increases almost linearly with temperature. All of these effects are explained with a simple model for the EMP.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 89: Symposium Q – Diluted Magnetic (Semimagnetic) Semiconductors , 1986 , 85
Copyright
Copyright © Materials Research Society 1987

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