▎ 摘　　要

NOVELTY - Preparing an organic electrochemical transistor based on laser-induced graphene, involves using Laser-induced graphene (LIG) as electrode comprising a drain electrode and a gate electrode, using a carbon dioxide laser engraving machine in a grating mode to pattern a LIG electrode on a polyimide film, connecting the source electrode and the drain electrode by an organic semiconductor, using the organic semiconducting materail Dodecyl benzene sulfonic acid (DBSA) to surfactant Poly (3,4-ethylene dioxythiophene): Poly(styrene sulfonate) (PEDOT: PSS) effectively combined with porous LIG electrodes to make a full-carbon flexible Organic electrochemical transistor (LIG-OECT), modifying Platinum nanoparticles (PtNPs) on the surface of the porous LIG electrode to realize sensitive sensing of hydrogen peroxide, where the grid surface is modified platinum nanoparticle, and Glucose oxidase (Gox) is sensitive to glucose chitosan. USE - Method for preparing an organic electrochemical transistor based on laser-induced graphene for use in preparing wearable sweat sensor for sensitive detection of non- disease treatment and diagnosis of human biological marker (all claimed). ADVANTAGE - The method provides a low-cost, flexible, full-carbon organic electrochemical transistor with high performance. The method is simple, economical and efficient for manufacturing high performance OECT. The OECT has higher cyclic stability than the OECT based on gold. The prepared organic electrochemical transistor has high flexibility (bending, torsion) high stability (8000 cycles), and normalized transconductance is up to 31 cmS-1. The PtNPs and GOx are modified on the LIG grid to realize high-sensitivity hydrogen peroxide and glucose detection.