PHOTODEGRADATION OF CDXZN1-XSE QUANTUM-WELLS

Photoluminescence imaging was used to study photodegradation in CdZnSe quantum wells, important to II-VI based blue-green light emitter technology. The observed degradation microstructure evolves similarly to features observed during CdZnSe based LED and laser operation. Degradation is shown to emanate from pre-existing defects to form dark line defects along the 〈100〉 directions. We report an observation of a mobile defect in II-VI materials that is the precursor to the 〈100〉 dark line defects. © 1995 American Institute of Physics.