Abstract
Photoluminescence measurements have been carried out in ZnSe-ZnCdSe Strained-layer superlattices subjucted to an electric field. It is observed that luminescence quenching and the peak shift toward the lower energy side due to the excitonic Stark effect for small electric fields. Subsequently, we find reversal to a blue shift and the luminescence peak enhancement for higher electric field, which is explained by a field-induced localization of carriers to isolated quantum wells.
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