Method for preparing macromolecular field effect transistor with ultrahigh charge mobility

Abstract

The invention relates to a method for preparing a macromolecular field effect transistor with ultrahigh charge mobility by an electric spinning method and combining a noble metal nano particle doping technique. The method comprises the following steps of: blending a noble metal salt and macromolecular fibers, then obtaining noble metal nano particle-doped macromolecular / conductive macromolecular core-shell nano fibers by a gas-phase polymerization or post-treatment liquid-phase polymerization method, and assembling the field effect transistor. The field effect transistor prepared by the method has high mobility which nearly exceeds that of most macromolecular transistors. The maximum charge mobilities of the field effects of gold-doped polyacrylonitrile / polyaniline and gold-doped polyacrylonitrile / polythiophene core-shell nano fibers can reach 9.37cm<2> / Vs and 10.35cm<2> / Vs respectively. The method has the advantages of simple industry, low cost and good repeatability, can prepare themacromolecular field effect transistor with the ultrahigh charge mobility, and opens up a new thinking for development and application of organic electronic devices.

Description

technical field [0001] The invention belongs to the technical field of organic semiconductor field-effect transistors, and in particular relates to a method for preparing a polymer field-effect transistor with ultra-high charge mobility by using an electrospinning method combined with a noble metal nano particle doping technology. Background technique [0002] As an important part of electronic devices, field-effect transistors have attracted a lot of research attention. The most important parameter to measure their pros and cons is field-effect charge mobility. With the continuous development of the electronics industry, organic field effect transistors have received special attention because of their low cost, inherent flexibility, and ease of use in large areas. Conductive polymers have played an important role in this field. However, the mobility of organic field effect transistors is very low, generally at 0.01cm 2 / Vs below, which limits its real application and devel...

AI Technical Summary

Problems solved by technology

However, the mobility of existing polymer-based organic field-effect transistors is still generally low, and needs to be further improved to meet the growing needs of the electronics industry

Moreover, the previous methods sometimes required complex surface treatment or long-term annealing process to improve molecular regularity, which would make the preparation process extremely complicated and the price would rise sharply, which is not conducive to popularization

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