Ultraviolet photodetectors based on wide bandgap oxide semiconductor films

Ultraviolet (UV) photodetectors have attracted more and more attention due to their great potential applications in missile tracking, flame detecting, pollution monitoring, ozone layer monitoring, and so on. Owing to the special characteristics of large bandgap, solution processable, low cost, environmentally friendly, etc. , wide bandgap oxide semiconductor materials, such as ZnO, ZnMgO, Ga 2 O 3 , TiO 2 , and NiO, have gradually become a series of star materials in the field of semiconductor UV detection. In this paper, a review is presented on the development of UV photodetectors based on wide bandgap oxide semiconductor films.