As a wide-band semiconductor,ZnO can be used for blue-green,blue and ultraviolet light-emitting devices,owing to its large exciton binding energy and large band width which equals to the wavelength of UV light.

• ZnO 的禁带宽度对应于紫外光的波长, 可用于制作蓝绿光、蓝光、紫外光等多种发光器件。