Preparation method of PEDOT/PSS conductive ink and coating

A conductive ink, ink viscosity technology, applied in ink, home appliances, applications, etc., can solve problems such as insufficient stability, limited compatibility, and increased haze

Active Publication Date: 2014-12-17
上海欧依有机光电材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of a non-conductive thickener, the conductivity of the transparent conductive film made of PEDOT / PSS conductive ink decreases and the haze increases;
[0006] (2) The polymer-based PEDOT / PSS transparent conductive film is still insufficient in terms of environmental resistance, such as water resistance and solvent resistance, compared with ITO and other types of transparent electrode new materials;
[0007] (3) In addition, due to the strong acidity of the prepared PEDOT / PSS dispersion, it will cause a decrease in metal conductivity due to its corrosiveness when in contact with metals, which severely limits its compatibility with metals such as nano-silver wires and metal grids. Compatibility when mixing conductive materials, and stability of fabricated transparent electrodes

Method used

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  • Preparation method of PEDOT/PSS conductive ink and coating
  • Preparation method of PEDOT/PSS conductive ink and coating
  • Preparation method of PEDOT/PSS conductive ink and coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] After the PEDOT / PSS polymerization reaction is over, stop the reaction. Add 2-amino-2-methyl-1-propanol, monitor and adjust the pH value to nearly neutral through a pH meter, and age for 0.5 hours. The mixture was transferred to a beaker, and 50 ml of cation exchanger (Lewatit S100H, Lanxess AG) and 29 ml of anion exchanger (Lewatit MP62, Lanxess AG) were added to remove inorganic salts. After the mixture was stirred for 6 hours, the exchanger was filtered out, and the viscosity was tested by a rotary viscometer;

Embodiment 2

[0043] After the PEDOT / PSS polymerization reaction is over, stop the reaction. 0.2 g of triethyl phosphate was added, and then 2-amino-2-methyl-1-propanol was added, and the pH value was adjusted to nearly neutral by monitoring with a pH meter, and aged for 0.5 hours. According to the same method in Example 1, after carrying out the anion-positive resin exchange treatment, the rotational viscometer tests the viscosity;

Embodiment 3

[0045] After the PEDOT / PSS polymerization reaction is completed, stop the reaction, add 2-amino-2-methyl-1-propanol, monitor and adjust the pH value to nearly neutral through pH meter, and age for 1 hour. According to the same method in Example 1, after carrying out the anion-positive resin exchange treatment, the rotational viscometer tests the viscosity;

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Abstract

The invention relates to a preparation method of PEDOT / PSS conductive ink and a coating. The preparation process of the conductive ink comprises the following steps: adding a thickener into an acidic PEDOT / PSS dispersion solution or a neutralized PEDOT / PSS dispersion solution to achieve the viscosity required by the ink; polymerizing 3, 4-ethylenedioxythiophene (EDOT) in the presence of polystyrenesulfonate (PSS) to form PEDOT / PSS, adding an alkaline additive to regulate the pH value to near neutral, achieving the use viscosity by an aging process, removing inorganic salts, thus obtaining the PEDOT / PSS dispersion solution with the neutral ink viscosity, then adding at least one condensate and / or non-aqueous solvent type polyester solution formed by guanamine and at least one carbonyl compound into the dispersion solution with the viscosity of the ink as an adhesive and mixing other functional additives to obtain the PEDOT / PSS conductive ink. The PEDOT / PSS conductive coating can be obtained by coating with the conductive ink, wherein the neutral PEDOT / PSS conductive coating is stable and has optimal performances.

Description

technical field [0001] The invention relates to a preparation method of a neutralizable PEDOT / PSS conductive ink and a coating, belonging to the field of conductive polymer functional materials. Background technique [0002] Transparent conductive films play a very important role in the display and solar industries. In recent years, due to the mass production of flat panel displays, the supply of Indium Tin Oxide (ITO) material currently used for making transparent conductive films is almost exhausted. To this end, many research institutions around the world are looking for viable alternatives. In addition, due to the soaring price of ITO materials, the limitation of ITO materials in large-scale manufacturing processes, and the rise of the flexible electronics industry, materials to replace ITO have been proposed one after another. [0003] The conductive polymer poly 3,4-ethylenedioxythiophene-polyethylenebenzenesulfonic acid (PEDOT / PSS) is a polymer of 3,4-ethylenedioxyt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/03C09D11/102C09D11/52C09D11/106
Inventor 李大忠陶志刚李元尨宋立文李葰李红光
Owner 上海欧依有机光电材料有限公司
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