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Particles, preparation method thereof, and quantum dot light-emitting diode

A quantum dot luminescence and quantum dot technology, which is applied in the field of quantum dots, can solve problems such as surface defects, poor stability, and easy agglomeration, and achieve the effects of improving solubility, improving charge transport performance, and improving performance

Inactive Publication Date: 2020-02-04
TCL CORPORATION
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a particle and its preparation method and quantum dot light-emitting diodes, aiming to solve the existing water-soluble quantum dots that have surface defects, poor stability and easy agglomeration, which lead to the use of The problem that the effect of the device prepared by the aqueous phase quantum dot is not good

Method used

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  • Particles, preparation method thereof, and quantum dot light-emitting diode
  • Particles, preparation method thereof, and quantum dot light-emitting diode
  • Particles, preparation method thereof, and quantum dot light-emitting diode

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Embodiment Construction

[0022] The present invention provides a particle, its preparation method and a quantum dot light-emitting diode. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] The embodiment of the present invention provides a method for preparing granules, which includes the steps of:

[0024] S100, providing initial particles, the initial particles include quantum dots, and oil-soluble ligands bound to the surface of the quantum dots;

[0025] S200, using the first ligand to perform the first ligand exchange with the primary particle to obtain intermediate particles;

[0026] S300. Using a second ligand to perform a second ligand exchange with the intermediate particle to obtain the particle;

[0027] Wherei...

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Abstract

The invention discloses particles, a preparation method thereof, and a quantum dot light-emitting diode. Through two-time ligand exchange, on the one hand, the solubility of the particles in a water-based solvent is improved; on the other hand, when the surfaces of prepared quantum dots simultaneously containing long-chain mercaptoalcohol ligands and binary thiophenol ligands serve as quantum dotlight-emitting diode materials, the charge transfer performance between the quantum dots is improved, and thus the performance of the quantum dot light-emitting diode is further improved.

Description

technical field [0001] The invention relates to the technical field of quantum dots, in particular to a particle, a preparation method thereof and a quantum dot light-emitting diode. Background technique [0002] Quantum dot light-emitting diodes are the main window of the next generation of new display technology, and different quantum dot materials are aimed at different quantum dot diode devices. [0003] There are many types of luminescent quantum dots, such as cadmium-containing and cadmium-free, and oil-soluble and water-soluble quantum dots among cadmium-containing and cadmium-free quantum dots; therefore, there will be different device structure designs for these different types of materials. The purpose of the design of the device structure is to improve the efficiency and stability of the device. For water-soluble quantum dots, there are many kinds of devices designed based on water-soluble quantum dots, but they mainly focus on the inverse device structure. For t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/88C09K11/02H01L51/50
CPCC09K11/883C09K11/025H10K50/115
Inventor 杨青松杨一行
Owner TCL CORPORATION
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