▎ 摘　　要

NOVELTY - Graphene photo detector comprises a passivation layer (400), which is arranged in upper surface of graphene layer (300). The carbon source material is supplied on surface of a catalyst substrate (100). The graphene layer is transferred on an insulating layer (200), which is formed on the substrate. An electrode (500) is formed in one side on the graphene layer. USE - Graphene photo detector. ADVANTAGE - The graphene photo detector performs stabilized optical response and is maintained without any change of the reference current. The graphene photo detector effectively operates in the short wavelength region in which energy requirement is large, and thus effectively functions in the multiple wavelength bands without division of the wavelength. The graphene photo detector efficiently suppresses oxidation/reduction reaction on its surface if the passivation layer is formed by improving mobility of the electron. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for manufacturing graphene photo detector, which involves: (A) removing the formed graphene layer on electrode and then covering the formed graphene graphene by an insulating layer, which is formed on catalyst substrate; and (B) forming passivation layer on upper surface of graphene layer to form the finished product. DESCRIPTION OF DRAWING(S) - The drawing shows cross-sectional view of graphene photo detector. Catalyst substrate (100) Insulating layer (200) Graphene layer (300) Passivation layer (400) Electrode (500)