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We report on laser action of ZnCdO∕ZnO quantum well structures up to room temperature under optical pumping. Prerequisite is a novel annealing step increasing the radiative efficiency of the low-temperature grown structures by more than one order of magnitude. The carrier states involved are localized making the lasing properties temperature robust. The longest wavelength reached so far is 490nm.
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Sadofev et al. (2007) studied this question.
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