research article

Spontaneous Emission of Highly Excited Gaas/(Ga,Al)as Quantum-Wells

Bongiovanni, G.
•
Staehli, J. L.  
1992
Solid State Communications

We report on a transparent analysis of the luminescence spectra of dense electron-hole plasmas confined in GaAs/(Ga,Al)As quantum wells. We fit the spectra using the fact that the total number of particle states does not depend on collision broadening. Further, the effective dispersion of the valence and conduction subbands and the dependence of the optical matrix elements on wavevector is accounted for. We find (a) that the lowest subbands shift almost rigidly with changing plasma density, and (b) that the theoreticallly calculated band gap shrinkage (random phase approximation) is always higher than the experimental values.

Type
research article
DOI
10.1016/0038-1098(92)90127-U
Web of Science ID

WOS:A1992JV15800011

Author(s)
Bongiovanni, G.
Staehli, J. L.  
Date Issued

1992

Published in
Solid State Communications
Volume

84

Issue

3

Start page

307

End page

311

Subjects

ELECTRON-HOLE PLASMA

•

BAND-GAP RENORMALIZATION

•

OPTICAL-PROPERTIES

•

SEMICONDUCTORS

•

APPROXIMATION

•

TEMPERATURE

•

SYSTEMS

•

GAIN

Note

Ecole polytech fed lausanne,inst phys appl,ch-1015 lausanne,switzerland. Bongiovanni, g, univ cagliari,dipartimento sci fis,via osped 72,i-09124 cagliari,italy.

ISI Document Delivery No.: JV158

Cited Reference Count: 25

Cited References:

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Editorial or Peer reviewed

REVIEWED

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Available on Infoscience
August 31, 2007
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/11045