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

R. Planel , R. Teissier , F. Mollot

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.

Domaines: Articles anciens

R. Planel, R. Teissier, F. Mollot. Optical non-linearities due to charge transfer in type II heterostructures. Journal de Physique IV Proceedings, 1993, 03 (C5), pp.C5-159-C5-166. ⟨10.1051/jp4:1993529⟩. ⟨jpa-00251615⟩