▎ 摘　　要

NOVELTY - Three-dimensional printing ink of a flexible organic electrical chemical transistor comprises base ink, electrode ink, source ink, insulating ink and dielectric layer ink; where the base ink is the cross-linked agent obtained by the nano fiber cellulose/polyvinyl hydrogel and pentalate; the electrode ink is the reducing oxygenic graphene/carbon nanotube electrode prepared by the oxide/carbon nanotube; the active layer of ink includes the passage of the ink with the active layer of ink and the source of the ink of the gate; the passage of ink and the source layer of the gate of the channel include poly(3,4-ethylenedioxythiophene) polystyrene sulfonate material; the ink of the laminar ink includes polydimethylsiloxane; and the ink of the dielectric layer includes poly(sodium-4-styrene sulfonate) gel electrolyte ink. USE - The printing ink is useful for flexible organic electrical chemical transistor (claimed). ADVANTAGE - The three-dimensional printing ink provides flexible organic electrochemical transistor having excellent electrical characteristics, thermal stability, and mechanical strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing flexible organic electrochemical transistor by using the flexible organic electrochemical transistor, comprising preparing the substrate ink, electrode ink, an active layer ink, an insulating layer ink and a dielectric layer ink, drawing the size of the organic electrochemical transistor, setting the ink printing parameter, and using the three-dimensional printing system to print.