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Quantum dot ink and preparation method thereof

A technology of quantum dots and quantum dot solution, applied in the field of quantum dot luminescence, can solve the problems of low viscosity, inconsistent quantum dot film thickness, poor uniformity, etc., and achieve the effects of uniform film formation, controllable composition ratio, and simple method.

Inactive Publication Date: 2016-08-03
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a quantum dot ink, aiming to solve the problem of inconsistent thickness and poor uniformity of the obtained quantum dot film due to the low viscosity of the existing quantum dot ink

Method used

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  • Quantum dot ink and preparation method thereof
  • Quantum dot ink and preparation method thereof
  • Quantum dot ink and preparation method thereof

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preparation example Construction

[0058] And, the embodiment of the present invention provides a method for preparing quantum dot ink, including the following steps:

[0059] S01. Weigh the formula components of the quantum dot ink of the foregoing claims;

[0060] S02. Dissolve the quantum dots in a solvent to form a quantum dot solution;

[0061] S03. Adding a viscosity modifier to the quantum dot solution, and mixing processing to obtain a quantum dot ink.

[0062] In the above step S01, the formula of the quantum dot ink and its preferred components and contents have been stated above. In order to save space, the details will not be repeated here.

[0063] In the above step S02, the quantum dots are dissolved in a solvent to form a quantum dot solution. Preferably, the quantum dots are dispersed in the main solvent, that is, a non-polar solvent, to better disperse the quantum dots uniformly, and then add The co-solvent is uniformly mixed to obtain a uniformly dispersed quantum dot solution. Among them, the method ...

Embodiment 1

[0082] A quantum dot ink, based on the weight percentage of the quantum dot ink as 100%, contains the weight percentage components shown in Example 1 of Table 1 below, wherein the quantum dots are oleylamine stable For red CdSe / ZnS quantum dots, the viscosity modifier is a viscosity modifier whose structure is shown in the following structural formula I, the main solvent is high-purity chlorobenzene, and the co-solvent is toluene.

[0083]

[0084] The method for preparing the quantum dot ink includes the following steps: weighing the formula components of the quantum dot ink; adding quantum dots, high-purity chlorobenzene, toluene and a viscosity modifier in order to form a blend, and combining the The mixture was stirred and mixed for 30 minutes to obtain a quantum dot ink composition.

[0085] Further, the quantum dot ink is printed by an inkjet printer into a quantum dot layer of 20×30 um and a resolution of 200×200 ppi. Heat to 200℃, 1×10 on the hot plate -6 Volatilize and dr...

Embodiment 2

[0087] Three kinds of quantum dot inks, based on the weight percentage of the quantum dot ink as 100%, contain the components shown in the following table 1 and embodiment 2 in weight percentage, wherein the quantum dots are oleylamine stable quantum Point, the viscosity modifier is a viscosity modifier whose structure is shown in the following structural formula II, the main solvent is high-purity n-heptane, and the co-solvent is o-xylene.

[0088]

[0089] Among them, the quantum dots in the first quantum dot ink are blue CdS / CdZnS quantum dots, the quantum dots in the second quantum dot ink are green CdZnSe / CdZnS quantum dots, and the quantum dots in the third quantum dot ink are red CdSe / ZnS quantum dots.

[0090] The method for preparing the quantum dot ink includes the following steps: weighing the formula components of the quantum dot ink; adding quantum dots, high-purity n-octane, toluene and a viscosity modifier in order to form a blend, and adding The blend was stirred ...

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Abstract

The invention is applicable to the technical field of quantum dot light emission, and provides a quantum dot ink and a preparation method thereof. The quantum dot ink comprises the following components in percentage by weight: 0.01-20.0% of quantum dot, 0.01-40.0% of viscosity modifier and 40.0-95.0% of solvent. The viscosity modifier is compounds disclosed in the specification, wherein R1 and R2 are independently selected from hydrogen, alkyl, aryl or hetetoaryl, and n is 2-20.

Description

Technical field [0001] The invention belongs to the technical field of quantum dot luminescence, and particularly relates to a quantum dot ink and a preparation method thereof. Background technique [0002] Quantum dots are quasi-zero-dimensional nanomaterials composed of a small number of atoms. The size of quantum dots is very small, and its particle size is generally between 1-20 nm. Since the movement of electrons in quantum dots in all directions is restricted, the quantum confinement effect is particularly significant. Its continuous band structure becomes a discrete energy level structure with molecular characteristics, which can emit fluorescence after being excited. Quantum dots have unique luminescence characteristics, their emission frequency changes with the size of quantum dot nanoparticles, narrow emission peaks, and relatively high luminescence quantum efficiency. In addition, they also have ultra-high light stability and solution processing (can be inkjet printin...

Claims

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Application Information

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IPC IPC(8): C09D11/38
CPCC09D11/38
Inventor 李雪
Owner TCL CORPORATION
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