▎ 摘　　要

NOVELTY - The detector has a substrate upwards orderly covered with a graphene film, a metal electrode, a lead sulfide seed layer, a lead sulfidenanometre film layer, where two ends of the graphene film are respectively paved with the metal electrode. The metal electrode is provided with a chromium that is formed on the graphene film. A gold or silver film is formed on the chromium. USE - Graphene/lead sulfide infrared detector. ADVANTAGE - The dense, flat, and uniform high-quality lead sulfide nanocrystalline film layer is obtained based on seed layer assisted growth of lead sulfide nanocrystals, and finally a high-response infrared detector is realized. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a graphene/lead sulfide infrared detector.