Blue-green emitters in wide-gap II-VI quantum-confined structures

The physical features and practical challenges for wide bandgap II-VI semiconductor blue-green light emitters, both LED´s and diode lasers, are reviewed in this rapidly moving field. Fundamental issues of optical and transport phenomena in the polar ZnSe-based compounds are examined, together with their impact on expected device performance. Examples of current device performance in the quantum well emitters are given, which have culminated in the recent demonstration of a room temperature CW diode laser