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p-type doping of MgZnO films and their applications in optoelectronic devices

C. X. Shan, J. S. Liu, Y. J. Lu, B. H. Li, Francis C. C. Ling, and D. Z. Shen

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Abstract

A lithium and nitrogen codoping method has been employed to prepare p-type MgZnO films, and p-MgZnO/i-ZnO/n-ZnO structured light-emitting devices (LEDs) and photodetectors have been fabricated. The LEDs can work continuously for about 97 h under the injection of a 20 mA continuous current, which is the best value ever reported for ZnO-based LEDs. The performance of the photodetectors degrades little after several running cycles. The above results reveal the applicability of the p-MgZnO films in optoelectronic devices.

© 2015 Optical Society of America

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