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Method for preparing macromolecular field effect transistor with ultrahigh charge mobility

A technology of field effect transistors and charge mobility, applied in the field of polymer field effect transistors, can solve the problems of complex preparation process, high price, unfavorable promotion, etc., and achieve the effect of good repeatability, low cost and low price

Inactive Publication Date: 2011-09-07
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Method for preparing macromolecular field effect transistor with ultrahigh charge mobility
  • Method for preparing macromolecular field effect transistor with ultrahigh charge mobility
  • Method for preparing macromolecular field effect transistor with ultrahigh charge mobility

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Add polyacrylonitrile (Mw=80,000) and chloroauric acid tetrahydrate to dimethylformamide (DMF), the mass fraction of polyacrylonitrile is 8wt%, the mass fraction of chloroauric acid tetrahydrate is 2.7wt%, Stir to dissolve at 60°C for 2 hours, then cool to room temperature.

[0055] Put the mixed solution into the spinneret of the electrospinning equipment, the inner diameter of the spinneret head is 1mm, the aluminum sleeve is used as the anode, and the parallel aluminum sheet (the distance is 2.2cm) is used as the cathode to accept the product, and the distance between the two poles is The electrospinning was carried out at an applied voltage of 12 kV. In this way, aligned fibers will be obtained between the two parallel aluminum sheets of the cathode (this method can refer to the literature Appl. Phys. Lett. 2006, 89, 133125).

[0056] The obtained aligned fibers were collected with a clean quartz wafer substrate. Then put the quartz sheet in the saturated steam of...

Embodiment 2

[0061]8wt% polyacrylonitrile (Mw=80,000) and 2.7wt% chloroauric acid tetrahydrate were added to dimethylformamide (DMF), stirred and dissolved at 60°C for 2h, and then cooled to room temperature. Put the mixed solution into the spinneret, the inner diameter of the spinneret is 1mm, the aluminum sleeve is used as the anode, and two parallel aluminum sheets (with a distance of 2.2cm) are used as the cathode to accept the product, and the distance between the two poles is 15cm. Electrospinning was carried out at a voltage of 12kV, so that nanofibers arranged in parallel were collected between parallel aluminum sheets. The obtained aligned fibers were collected with a clean quartz wafer substrate. The fiber was then placed in an atmosphere saturated with aniline monomer. The gas phase polymerization time was adjusted to 10 hours at 60°C.

[0062] The device assembly process is consistent with that of Embodiment 1. The maximum field effect mobility of the transistor is about 4.7...

Embodiment 3

[0064] 8wt% polyacrylonitrile (Mw=80,000) and 4wt% chloroauric acid tetrahydrate were added to dimethylformamide (DMF), stirred and dissolved at 60°C for 2h, and then cooled to room temperature. Put the mixed solution into the spinneret, the inner diameter of the spinneret is 1mm, the aluminum sleeve is used as the anode, and two parallel aluminum sheets (with a distance of 2.2cm) are used as the cathode to accept the product, and the distance between the two poles is 15cm. Electrospinning was carried out at a voltage of 12kV, so that nanofibers arranged in parallel were collected between parallel aluminum sheets.

[0065] The obtained aligned fibers were collected with a clean quartz substrate. The fiber was then placed in an atmosphere saturated with aniline monomer. Gas-phase polymerization was carried out at 60°C for 30h. The obtained core-shell fibers were used to assemble polymer transistors, and the device assembly process was consistent with that of Example 1. The m...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/40H01L51/30
Inventor 王策王威李振宇董博张弘楠宋明昕王兆杰
Owner JILIN UNIV
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