▎ 摘　　要

NOVELTY - The detector (100) has an insulating layer (3) which is provided on a substrate (4), and a graphene layer is provided on the insulating layer. A pair of electrode is provided on both sides of the graphene layer on the insulating layer. A buffer layer (5) is arranged between the graphene layer and a electrode (2) so as to separate the graphene layer and the electrode each other. USE - Electromagnetic wave detector formed electromagnetic wave detector array (claimed). ADVANTAGE - The movement of the electric charge between a graphene and an electrode is prevented, and the detection sensitivity and efficiency of the generated carrier becomes high. The movement of the electric charge is attained. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional drawing of the electromagnetic wave detector. Electrode (2) Insulating layer (3) Substrate (4) Buffer layer (5) Electromagnetic wave detector (100)