Organic electrochemical transistor and preparation method thereof

Abstract

The invention discloses an organic electrochemical transistor and a preparation method thereof. A conductive polymer nanowire array is distributed on a substrate; gold material electrodes serving as a source electrode and a drain electrode of the organic electrochemical transistor are arranged on the substrate and are located at two ends of the conductive polymer nanowire array; a liquid storage tank is arranged on the substrate; the conductive polymer nanowire array is arranged in a space defined by the liquid storage tank; electrolyte is injected into the liquid storage tank; the gold material electrodes are in insulated connection with the electrolyte; and a reference electrode serves as a grid electrode of the organic electrochemical transistor and is inserted into the electrolyte. The PEDOT: PSS nanowire array organic electrochemical transistor prepared by the method of the invention can be directly used for electrical testing and has good electrical properties. Compared with the performance of a traditional thin film type conductive polymer organic electrochemical transistor, the transconductance, muC *, response speed, stability and other properties of the organic electrochemical transistor are all superior. The preparation method is simple to operate and low in cost, and has the potential of large-scale application.

Description

technical field [0001] The invention relates to the technical field of microelectronic devices, in particular to an organic electrochemical transistor and a preparation method thereof. Background technique [0002] An organic electrochemical transistor is an electrical device that couples ion transport and electron transport. It mainly utilizes the property that the conductivity of conductive polymers varies with potential to control the current between source and drain. This device has a high switching ratio and high signal amplification performance, and can amplify tiny biological signals. Therefore, organic electrochemical transistors have received extensive attention in the fields of microelectronic devices and biosensors. [0003] However, the current conductive polymer thin film organic electrochemical transistors have the disadvantages of low transconductance, poor cycle stability, and low material utilization, which affect the further development of such devices and...

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Problems solved by technology

[0005] The object of the present invention is to provide an organic electrochemical transistor and its preparation method, aiming to solve the problems of low transconductance and poor cycle stability in existing organic electrochemical transistors

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