▎ 摘　　要

NOVELTY - A UV detector comprises substrate, where the UV detector is a photoconductive UV detector, the substrate comprises photosensitive layer and electrode, and the photosensitive layer is graphene and zinc-silver-nitric oxide. USE - UV detector. ADVANTAGE - The UV detector has good response speed and excellent comprehensive performance. DETAILED DESCRIPTION - A UV detector comprises substrate, where the UV detector is a photoconductive UV detector, the substrate comprises photosensitive layer and electrode, the photosensitive layer is graphene and zinc-silver-nitric oxide compound (ZnxAg1-xNyO1-y), x is 0.40-0.99 and y is 0.01-0.60. An INDEPENDENT CLAIM is also included for a method for preparing UV detector.