▎ 摘　　要

NOVELTY - The detection device has a substrate (10), a gate electrode (20), a source electrode (50), a drain electrode (60), a first graphene layer (30), a second graphene layer (40), a photo-deformation layer (70), a grating layer (80), and a light-emitting molecular layer (90). The first graphene layer is arranged to cover the opening position of the groove. The photo-deformable layer is arranged on the side of the first graphene layer away from the substrate. The second graphene layer is arranged on a side of the photo-deformable layer away from the substrate. Two ends of the first graphene layer and the second graphene layer are connected. The source electrode and the drain electrode are arranged on both sides of the two ends of the first graphene layer and the second graphene layer. The grating is arranged on the side of the second graphene layer away from the substrate. The light-emitting molecular layer is arranged on the side of the grating away from the substrate. USE - Detection device of detection system (claimed) for detecting luminous intensity of light emitting molecule. ADVANTAGE - The detection device efficiently changes the carrier density and conductivity of the graphene layer by detecting output voltage of the device at the drain electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the detection device. Substrate (10) Gate electrode (20) First graphene layer (30) Second graphene layer (40) Source electrode (50) Drain electrode (60) Photo-deformation layer (70) Grating layer (80) Light-emitting molecular layer (90)