New encapsulant source for III–V quantum well disordering

Abstract

We report here the characteristic features of a newly developed dielectric encapsulant cap layer, which after adequate thermal treatments, leads to a reproducible local alloy disorder in several III–V quantum well (QW) structures. Data are presented to demonstrate its universality, namely, its ability to promote alloy-disorder free of charge carriers either on group III or group V sublattice depending on the type of the QW structure.