Cubic MgZnO Deep-ultraviolet Photodetector with High Responsivity

An MSM solar-blind UV photodetector was fabricated on Mg0. 29Zn0. 71 O thin film,which showed a large responsivity of 27. 9 A /W at 30 V bias(268 nm). The ultra thin phase-transition layer leads to the improvement of the metal-semiconductor contact and more internal gain. The results provide a new choice to realize high performance MgZnO-based solar-blind UV detectors.