Photodegradation of CdxZn1−xSe quantum wells

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Abstract
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.

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