▎ 摘　　要

NOVELTY - The detector has a surface cover fixed with a medium layer that is fixed with a substrate. The medium layer is arranged on a surface of a single layer graphene part. A metal electrode is fixed on the single layer graphene part that is fixed with a voltage change electric current source. The single layer graphene part receives bias voltage according to photoconductive characteristic peak position to realize terahertz frequency detection process. The substrate is formed as an N type heavily doped silicon substrate. Two metal electrodes are made of gold, silver and aluminum material. USE - Terahertz photoelectric detector. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a terahertz photoelectric detector.