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Method for improving uniform coating of PEDOT/PSS conductive thin film

A conductive thin film, uniform technology, applied in the direction of coating, etc., can solve the problems of affecting the physical properties of the conductive film, complicating the processing technology, affecting the conductive performance and uniformity of the thin layer, etc.

Inactive Publication Date: 2014-07-16
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This operation process has a certain effect on large-area spin coating, but it affects the conductivity and uniformity of the thin layer, and complicates the processing process
At the same time, the surfactant exists in the conductive film as an insulating substance, which is likely to affect some physical properties of the conductive film, such as thermal stability

Method used

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  • Method for improving uniform coating of PEDOT/PSS conductive thin film
  • Method for improving uniform coating of PEDOT/PSS conductive thin film
  • Method for improving uniform coating of PEDOT/PSS conductive thin film

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) At room temperature, weigh 1.9875g of PEDOT / PSS dispersion in a 20ml sample bottle, add 0.0430g of EG, and stir for 24 hours to prepare PEDOT / PSS dispersion doped with ethylene glycol;

[0032] (2) Cut the substrate PET into a square shape of 20 mm×20 mm, ultrasonically clean it with absolute ethanol, acetone, and deionized water for 20 minutes, and then dry it;

[0033] (3) At room temperature, spin-coat the active agent Capstone FS-30 onto the PET substrate at a speed of 1000 rpm. Spin-coat the EG-doped PEDOT / PSS dispersion in step (1) onto the surfactant layer at a speed of 3000 rpm, then heat the film at 50 °C for 15 min, and then at 120 °C for 15 min .

Embodiment 2

[0035] (1) At room temperature, weigh 2.1065g of PEDOT / PSS dispersion in a 20ml sample bottle, add 0.0666g of EG, and stir for 24 hours to prepare PEDOT / PSS dispersion doped with ethylene glycol;

[0036] (2) Cut the substrate PET into a square shape of 20 mm×20 mm, ultrasonically clean it with absolute ethanol, acetone, and deionized water for 20 minutes, and then dry it;

[0037] (3) At room temperature, spin-coat the active agent Capstone FS-30 onto the PET substrate at a speed of 2000 rpm. Spin-coat the EG-doped PEDOT / PSS dispersion in step (1) onto the surfactant layer at a speed of 3000 rpm, then heat the film at 50 °C for 15 min, and then at 120 °C for 15 min .

Embodiment 3

[0039] (1) At room temperature, weigh 2.7733g of PEDOT / PSS dispersion in a 20ml sample bottle, add 0.1212g of EG, and stir for 24 hours to prepare PEDOT / PSS dispersion doped with ethylene glycol;

[0040] (2) Cut the substrate PET into a square shape of 20 mm×20 mm, ultrasonically clean it with absolute ethanol, acetone, and deionized water for 20 minutes, and then dry it;

[0041] (3) Spin-coat the active agent DuPont onto the PET substrate at a speed of 3000 rpm at room temperature. Spin-coat the EG-doped PEDOT / PSS dispersion in step (1) onto the surfactant layer at a speed of 2000 rpm, then heat the film at 50 °C for 15 min, and then at 120 °C for 15 min .

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Abstract

The invention belongs to the field of conductive polymer function materials, and discloses a method for improving uniform coating of a PEDOT / PSS conductive thin film. The method includes two steps of spin coating, firstly, a surface active agent (CapstoneFS-30, DuPont) is coated onto a washed base plate in a spinning mode, PEDOT / PSS (CleviosPH1000, Heraeus) dispersion liquid doped with ethylene glycol (EG) is coated in a spinning mode immediately, and then heat treatment is conducted to obtain the conductive thin film. Compared with a traditional method that a surface active agent is directly doped with dispersion liquid and then spin coating is conducted, the method can guarantee the light transmittance and the electrical conductivity of the thin film, meanwhile improve the uniformity of the thin film, and accordingly achieve large-area coating.

Description

technical field [0001] The invention belongs to the field of conductive polymer functional materials, and in particular relates to a method for improving the uniform coating of PEDOT / PSS conductive films. Background technique [0002] Poly(3,4-ethylenedioxythiophene) (PEDOT) was synthesized for the first time in the Bayer A G laboratory in Germany. It is a typical representative of thiophene conductive polymers. By introducing ethylene at the 3 and 4 positions of the thiophene ring Dioxyl is obtained, and its conductive doping state is very stable. Moreover, the absorption peak of the conjugated π bond of PEDOT does not appear in the visible light absorption range, and its absorption wavelength is about 300 nm, which has the property of light transmission. Therefore, PEDOT, like most conductive polymer materials, has excellent electromagnetic properties, mechanical processing properties, stable electrochemical properties, good transparency, high photoelectric efficiency and...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L65/00C08L25/18C08J7/04
Inventor 严虎程文贞梅因昂
Owner ZHENGZHOU UNIV
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