▎ 摘　　要

NOVELTY - The method involves using ion to irradiate a two-dimensional material gas sensitive layer in a gas detector based on two-dimensional material. Energy of high energy high charge state ion is selected under vacuum environment at room temperature. Determination is made that irradiation dose is not less than 1ions/cm2. The two-dimensional material is included with graphene materials and a transition metal sulfide. Performance of the two-dimensional material-based gas detector is raised to improve gas sensitivity of the two-dimensional material-based gas detector. USE - Method for improving performance of a gas detector based on two-dimensional material. ADVANTAGE - The method enables controlling ion irradiation dose effective control defect number, selecting proper incident heavy ion energy, performing ion penetrating on a two-dimensional material layer to effectively avoid impurity atom in a two-dimensional gas sensitive material layer. The method enables using a high-energy charge state ion irradiated graphene detector for selecting proper irradiation injection amount and ensuring improvement of gas sensitivity and development performance, thus avoiding load energy heavy ion irradiating damage. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a two-dimensional material based gas detector; and (2) a gas detector preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a gas detector. (Drawing includes non-English language text).