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Quantum dot conductive ink and quantum dot film

A technology of conductive ink and quantum dot film, which is applied in the field of printing, can solve the problems of poor stability of quantum dot ink, uneven film formation, and failure to meet the requirements of use, and achieve the effect of improved film formation, high stability, and smooth process

Active Publication Date: 2022-03-04
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing quantum dot ink has poor stability and uneven film formation, which cannot meet the requirements of use

Method used

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  • Quantum dot conductive ink and quantum dot film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a quantum dot conductive ink, including: CdSe quantum dots with a mass ratio of 6%; diethylene glycol monobutyl ether (a first solvent with a boiling point of about 230°C) with a mass ratio of 42.3%; The mass ratio is 12.5% ​​n-octanol (the second solvent, the boiling point is about 196°C); the mass ratio is 20% 2,4-pentanediol (the second solvent, the boiling point is about 193°C); the mass ratio is The ratio is 14.2% isoamyl isovalerate (the third solvent, the boiling point is about 193 ° C); is 174°C). The preparation of the quantum dot conductive ink in Example 1 can be accomplished by simply mixing and stirring all the raw materials.

[0039] The quantum dot conductive ink in Example 1 remains stable after being placed for 30 days, and no agglomeration or precipitation will occur. At 25°C, the viscosity, surface tension and conductivity properties of the quantum dot conductive ink were tested, and the results are shown in Table 1.

[004...

Embodiment 2

[0042] This embodiment provides a quantum dot conductive ink, including: CdSeS quantum dots with a mass ratio of 5%; diethylene glycol monopentyl ether (a first solvent with a boiling point of about 255°C) with a mass ratio of 45%; 13.9% of 3-methyl-2-heptanol (second solvent, boiling point is about 166°C); 22% of 1,6-hexanediol (second solvent, boiling point of about 250°C); 12.1% by mass of isoamyl butyrate (the third solvent, with a boiling point of about 179°C); 2% by mass of 1H,1H,2H,2H-perfluorooctyl alcohol (surface tension regulator, the boiling point is about 174°C). The preparation of the quantum dot conductive ink in Example 2 can be achieved by simply mixing and stirring all the raw materials.

[0043] In Example 2, the quantum dot conductive ink remains stable after being placed for 30 days, without agglomeration or precipitation. At 25°C, the viscosity, surface tension and conductivity properties of the quantum dot conductive ink were tested, and the results ar...

Embodiment 3

[0046] This embodiment provides a quantum dot conductive ink, comprising: CdSe / ZnS quantum dots with a mass ratio of 4%; triethylene glycol monomethyl ether (the first solvent, with a boiling point of about 249° C.) with a mass ratio of 46.3% ); mass proportion is 15% 3-methyl-2-heptanol (second solvent, boiling point is about 166 ℃); mass proportion is 20.8% isononyl alcohol (second solvent, boiling point is about 178 ℃ ); the mass ratio is 10.9% isoamyl butyrate (the third solvent, the boiling point is about 179 ° C); the mass ratio is 3% 1H, 1H, 11H-perfluoro-1-undecanol (surface tension regulator, the boiling point is about 180°C). The preparation of the quantum dot conductive ink in Example 3 can be achieved by simply mixing and stirring all the raw materials.

[0047] In Example 3, the quantum dot conductive ink remains stable after being placed for 30 days, without agglomeration or precipitation. At 25°C, the viscosity, surface tension and conductivity properties of t...

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Abstract

The application discloses a quantum dot conductive ink and a quantum dot film. Wherein, the quantum dot conductive ink includes quantum dots and a first solvent, the first solvent is an alcohol ether with a boiling point between 180°C and 300°C; a second solvent, and the second solvent is a boiling point between 160°C and 280°C alcohols; the third solvent, the third solvent is an ester with a boiling point between 175 and 280°C, and at 25°C, the conductivity of the alcohol ether is (0.01 to 1)×10 ‑5 S / m, the conductivity of the alcohols is (0.01~1)×10 ‑5 S / m. The quantum dot conductive ink has suitable conductivity and high ink stability, the quantum dots can be evenly dispersed therein, and no agglomeration or sedimentation will occur after a long period of storage. When performing inkjet printing, the process is smooth and a uniform quantum dot film is obtained.

Description

technical field [0001] The application belongs to the technical field of printing, and in particular relates to a quantum dot conductive ink and a quantum dot film. Background technique [0002] In the field of printing technology, electrofluid printing technology uses electric field to induce fluid flow to stretch the ink inside the micro-nozzle, so that the ink forms ink droplets and sprays them onto the substrate to obtain high-resolution patterns or manufacture micro-nano level. Technology of electronic devices. Compared with traditional inkjet printing technology, electrofluid inkjet printing has the advantages of controllable ink dot shape, accurate positioning and high resolution, and has broad application prospects in many fields. [0003] Quantum dots are often used as inkjet printing materials due to their excellent properties such as wide color gamut, high color purity, adjustable emission wavelength, and easy synthesis and processing. In the application of elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/36
CPCC09D11/52C09D11/36
Inventor 方龙王允军刘东强史横舟
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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