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Composition, preparation method thereof and light-emitting diode

A technology of light-emitting diodes and compositions, applied in semiconductor/solid-state device manufacturing, applications, inks, etc., can solve the problems of poor film-forming performance of quantum dot inks, reduce uneven film layers, simple operation, and increase luminous efficiency Effect

Inactive Publication Date: 2021-07-16
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to solve the problem of poor film-forming performance of quantum dot ink

Method used

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  • Composition, preparation method thereof and light-emitting diode
  • Composition, preparation method thereof and light-emitting diode
  • Composition, preparation method thereof and light-emitting diode

Examples

Experimental program
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Embodiment approach

[0028] As an embodiment, the quantum dots include group IV quantum dots, II-VI group quantum dots, II-V group quantum dots, III-V group quantum dots, III-VI group quantum dots, IV-VI group quantum dots, I - At least one of the group III-VI quantum dots, II-IV-VI quantum dots, and II-IV-V group quantum dots, having quantum dot characteristics and high luminous efficiency.

[0029] The above-mentioned quantum dots include but not limited to binary phase, ternary phase, quaternary phase quantum dots, etc., which can be selected as blue quantum dots, green quantum dots, red quantum dots or yellow quantum dots, depending on the actual needs of QLED devices . In some embodiments, the quantum dots are selected as binary phase quantum dots, preferably at least one of CdS, CdSe, CdTe, InP, AgS, PbS, PbSe and HgS. In some embodiments, quantum dots are selected as ternary phase quantum dots, preferably Zn X Cd 1-X S, Cu X In 1-X S, Zn X Cd 1-X Se, Zn X Se 1-X S, Zn X Cd 1-X Te...

Embodiment 1

[0074] This embodiment has prepared a kind of ink and LED:

[0075] (1) Preparation of ink

[0076] The ink raw materials are weighed according to the formula, and the total weight of the ink is 100%, and the ink includes: 10% of green light CdSe quantum dots; 86% of n-hexane; 1% of sodium dodecylbenzenesulfonate; alkanolamide polyoxyethylene Alkylamide 1%; dipropyl ether 1%; triethanolamine monooleate 0.5%; emulsified silicone oil 0.5%.

[0077] Add green light CdSe quantum dots into n-hexane, stir at room temperature for 2 hours to obtain the first solution; then, add remaining raw materials to the first solution, continue stirring until all materials are completely dissolved, filter to obtain ink.

[0078] (2) Preparation of light-emitting diodes

[0079] Provide a substrate, the substrate includes: an anode, a TFB hole transport layer formed on the anode;

[0080] Adopt ink-jet printing method, the ink that step (1) is made is printed on the TFB hole transport layer, dr...

Embodiment 2

[0083] This embodiment has prepared a kind of ink and LED:

[0084] (1) Preparation of ink

[0085] The ink raw materials are weighed according to the formula, based on the total weight of the ink as 100%, the ink includes: red light CdSe quantum dots 20%; cyclooctane 71%; fatty alcohol ether sodium sulfate 3%; pentaerythritol ester 2%; n-hexyl ether 2% ; Triethanolamine monooleate 1%; Higher carbon alcohol 1%.

[0086] Add red CdSe quantum dots into cyclooctane, stir until uniformly dispersed, and obtain the first solution; then, add remaining raw materials into the first solution, continue stirring until all materials are completely dissolved, and filter to obtain ink.

[0087] (2) Preparation of light-emitting diodes

[0088] Provide a substrate, the substrate includes: an anode, a TFB hole transport layer formed on the anode;

[0089] Adopt ink-jet printing method, the ink that step (1) is made is printed on the TFB hole transport layer, dry, form light-emitting layer; ...

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Abstract

The invention belongs to the technical field of display, and particularly relates to a composition, a preparation method thereof and a light-emitting diode. The composition provided by the invention comprises 10%-30% of quantum dots, 1%-3% of an anionic surfactant, 1%-3% of a nonionic surfactant, 0%-3% of a solubilizer, 0%-5% of an additive and 56%-87% of a solvent, wherein the solubilizer is a polar organic solvent, and the solvent is a non-polar organic solvent. The composition has good compatibility, uniformity and stability, low surface tension, good wettability and good film-forming property, is beneficial to formation of a uniform and compact quantum dot film, and can be used as ink to be applied to preparation of a light-emitting layer of a light-emitting diode by an ink-jet printing method.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a composition, a preparation method thereof and a light emitting diode. Background technique [0002] With the continuous advancement of science and technology, quantum dot light-emitting diodes (Quantum Dot, QD) have gradually emerged due to their unique advantages of extremely thin appearance, wider color gamut, high purity, high brightness, low start-up voltage, and better stability. Become a new generation of display products that replace organic light-emitting diodes (OLEDs). Semiconductor quantum dots have a quantum size effect. People can adjust the size of quantum dots to achieve the required specific wavelength of light. For example, by adjusting the size of CdSe QDs, the emission wavelength can be tuned from blue light to red light. The device structure of QLED generally includes an anode layer, a hole transport layer, a quantum dot light-emitting layer, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/36C09D11/38H01L51/54
CPCC09D11/36C09D11/38H10K85/00
Inventor 何斯纳吴龙佳吴劲衡
Owner TCL CORPORATION
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