Numéro
Le Journal de Physique IV
Volume 03, Numéro C5, Octobre 1993
Third International Conference on Optics of Excitons in Confined
Page(s) C5-159 - C5-166
DOI http://dx.doi.org/10.1051/jp4:1993529
Third International Conference on Optics of Excitons in Confined

Le Journal de Physique IV 03 (1993) C5-159-C5-166

DOI: 10.1051/jp4:1993529

Optical non-linearities due to charge transfer in type II heterostructures

R. PLANEL, R. TEISSIER and F. MOLLOT

Laboratoire de Microstructures et Microélectronique, Centre National de la Recherche Scientifique (L2M-CNRS), BP. 107, 92225 Bagneux cedex, France


Abstract
We present experimental studies of photocreated carrier population in type II heterostructures. The main effects are related to charge separation and band filling : Blue shift and broadening of the luminescence line, transition from indirect recombination to pseudo-direct, and then to direct-type I recombination. They may lead to more complex non-linear effects such as bistability. These effects can be accounted for by theory in the framework of the Envelope-Function Approximation, by self consistent treatment of the Poisson and Schroedinger equations.



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