MgZnO heterostructure light-emitting devices (LEDs) have been fabricated from structures, and the -type film was realized using a lithium–nitrogen codoping method. Obvious ultraviolet emission peaked at around 355 nm dominates the electroluminescence (EL) spectra of the device at room temperature, which comes from the near-band-edge emission of the -type film. This is the first report on MgZnO heterostructured LEDs and the shortest EL emission ever reported in ZnO-based junction LEDs to the best of our knowledge.
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