Quantum dot composition and preparation method thereof, quantum dot patterning method and patterned quantum dot solid film

A technology of quantum dots and compositions, which is applied in the field of patterned quantum dot solid film, can solve the problems of low production efficiency, and achieve the effect of simple process, simple preparation process and high processing efficiency

Active Publication Date: 2020-09-01
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides a quantum dot composition and its preparation method, a quantum dot patterning method, and a patterned quantum d

Method used

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  • Quantum dot composition and preparation method thereof, quantum dot patterning method and patterned quantum dot solid film
  • Quantum dot composition and preparation method thereof, quantum dot patterning method and patterned quantum dot solid film
  • Quantum dot composition and preparation method thereof, quantum dot patterning method and patterned quantum dot solid film

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preparation example Construction

[0055] In a second aspect, the application provides a method for preparing a quantum dot composition, such as figure 2 As shown, for preparing the quantum dot composition disclosed in the first aspect, comprising the following steps:

[0056] S1. Separately prepare a protective medium solution and a quantum dot solution containing a plurality of quantum dot particles.

[0057] Specifically, preparing the protective medium solution is to fully disperse the protective medium in the first solvent, and preparing the quantum dot solution containing multiple quantum dot particles is to fully disperse the multiple quantum dot particles in the second solvent. in solvent. It should be noted that the first solvent and the second solvent may be the same solvent, or the first solvent and the second solvent may be different solvents, but the first solvent and the The condition under which the second solvent is miscible.

[0058] For example, both the first solvent and the second solven...

Embodiment 1

[0106] Embodiment 1: Preparation of red light quantum dot composition

[0107] The red light quantum dot composition includes a plurality of red light quantum dot particles and a protective medium for wrapping the plurality of quantum dot particles, the protective medium is a ZIF series material, that is: a zeolite-like imidazolate framework material, the The zeolite-like imidazolate framework material can be purchased through commercial channels, or can be prepared according to the synthesis method provided by the prior art. Each of the red light quantum dot particles has a core-shell structure, wherein the luminescent core is CdSe, and the inorganic shell layer is ZnS. The synthesis method of CdSe / ZnS red light quantum dot particles can refer to the prior art, and will not be repeated here.

[0108] Use thioglycolic acid to carry out ligand exchange on CdSe / ZnS red light quantum dot particles, so that the surface of CdSe / ZnS red light quantum dot particles carries negatively...

Embodiment 2

[0112] Embodiment 2: Preparation of green light quantum dot composition

[0113] The green light quantum dot composition includes a plurality of red light quantum dot particles and a protective medium for wrapping the plurality of quantum dot particles, the protective medium is a ZIF series material, that is: a zeolite-like imidazolate framework material, the The zeolite-like imidazolate framework material can be purchased through commercial channels, or can be prepared according to the synthesis method provided by the prior art. Each of the green light quantum dot particles has a core-shell structure, wherein the luminescent core is InP, and the inorganic shell layer is ZnS. The synthesis method of the InP / ZnS green light quantum dot particles can refer to the prior art, and will not be repeated here.

[0114] Use oleylamine to carry out ligand exchange on InP / ZnS green light quantum dot particles, so that the surface of InP / ZnS green light quantum dot particles carries posit...

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Abstract

The invention discloses a quantum dot composition and a preparation method thereof. Ligands of quantum dot particles are protected by modifying the outsides of the quantum dot particles with a metal organic framework material and/or a covalent organic framework material, the preparation process is simple, and the stability of the quantum dot particles is improved. In addition, the invention also discloses a quantum dot patterning method and a patterned quantum dot solid film prepared by the quantum dot patterning method, so as to solve the problem of relatively low preparation efficiency in amethod for patterning quantum dots by utilizing an electrophoresis technology at present.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a quantum dot composition and a preparation method thereof, a quantum dot patterning method and a patterned quantum dot solid film. Background technique [0002] Quantum Dots (Quantum Dots, QD) is a semiconductor nanomaterial that emits colored light when it is stimulated by light or electricity. It has the advantages of small size, narrow fluorescent emission peak, pure color, high brightness, and good stability. It has broad application prospects in the fields of flat panel display, solid-state lighting, biomarkers, and photovoltaic solar energy. [0003] In the manufacturing process of quantum dot light-emitting devices, the patterning of quantum dots is one of the key processes. At present, the patterning of quantum dots is generally realized by inkjet printing process, transfer printing process or photolithography process. Among them, inkjet printing process and ...

Claims

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Application Information

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IPC IPC(8): C08L87/00C08K9/10C08K9/04C08K3/30C08K3/32C09K11/02C09K11/70C09K11/88B82Y20/00B82Y30/00B82Y40/00G02F1/13357G02F1/1335G03F7/00
CPCC08K9/10C08K9/04C08K3/30C08K3/32C09K11/02C09K11/70C09K11/883B82Y20/00B82Y30/00B82Y40/00G02F1/1336G02F1/133514G03F7/0007C08K2003/3036C08L87/00
Inventor 赵金阳
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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