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Magnetoluminescence Studies in Ordered InGap2

Published online by Cambridge University Press:  10 February 2011

E. D. Jones ,
R. P. Schneider Jr.  and
A. Mascarenhas
E. D. Jones
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185-0350, USA
R. P. Schneider Jr.
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185-0350, USA
A. Mascarenhas
Affiliation:
National Renewable Energy Laboratory, Golden, CO 80401, USA
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Abstract

Photoluminescence measurements on ordered InGaP2 were studied as a function of temperature, laser power density, and magnetic field. The temperature varied between 1.4 and 300 K, the laser power densities ranged from 10 nW/cm2 to 20 W/cm2, and the maximum magnetic field was 13.6 T. The data show two spectra, excitonic and band-to-band transitions, depending upon the incident laser power density. A consistent interpretation of the band-to-band spectrum leads to a spatially separated electron-hole transitions between the ordered domains. Three different mechanisms for spatially indirect transitions are presented. An analysis of the linear data also allows a determination of the valence-band mass in the 100 direction of mv ∼0.25 m0.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 417: Symposium EE – Optoelectronic Materials-Ordering, Composition Modulation, and Self-Assembled … , 1995 , 73
Copyright
Copyright © Materials Research Society 1996

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