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A study of the excitonic characteristics in heterostructures with quantum wells and corrugated surface
 

Summary: A study of the excitonic characteristics in heterostructures with quantum wells and
corrugated surface
I. A. Avrutski
Institute of General Physics, Russian Academy of Sciences, 117942 Moscow, Russia
V. G. Litovchenko
Institute of Semiconductor Physics, Ukrainian National Academy of Sciences, 252650 Kiev, Ukraine
Submitted May 12, 1996; accepted for publication May 22, 1996
Fiz. Tekh. Poluprovodn. 31, 875­879 July 1997
The excitonic characteristics of InxGaAs1 x ­GaAs heterostructures in quantum wells in the
presence of a corrugated surface has been investigated. The corrugated surface gives a substantial
up to 20% polarization of the excitonic spectra even when the exciting light is incident in
the direction of the normal. The exciton binding energies are calculated on the basis of data on the
phonon repetitions of the photoluminescence spectra and the results agree well with the
theoretical calculations. The parameters of the surface microrelief of the experimental layered
structures are estimated on the basis of the degree of polarization of the photoluminescence
and the magnitudes of the reflection and transmission. © 1997 American Institute of Physics.
S1063-7826 97 03007-X
1. INTRODUCTION
Interest in quantum-well structures with a corrugated
surface has increased in the last few years in connection with

  

Source: Avrutsky, Ivan - Department of Electrical and Computer Engineering, Wayne State University

 

Collections: Engineering