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Composite nano particles as well as preparation method and application thereof

A composite nanoparticle and nanoparticle technology, which is applied in the field of composite nanoparticles and their preparation, can solve problems such as affecting the electron mobility of materials, and achieve the effects of lowering the contact barrier, simple method and improving efficiency.

Active Publication Date: 2019-07-09
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a composite nanoparticle and its preparation method, aiming to solve the problem that there is a contact barrier between the metal oxide nanoparticles used as the material of the electron transport layer, which affects the electron mobility of the material

Method used

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Examples

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Effect test

preparation example Construction

[0028] Correspondingly, the embodiment of the present invention also provides a preparation method of composite nanoparticles, comprising the following steps:

[0029] S01. Provide halide anion-modified metal oxide nanoparticles and electropositive surface modifier-modified metal nanoparticles, respectively;

[0030] S02. Dissolving the metal oxide nanoparticles modified by the halide anion and the metal nanoparticles modified by the electropositive surface modifier in a solvent, and performing mixing treatment to prepare composite nanoparticles.

[0031] The preparation method of the composite nanoparticle provided by the embodiment of the present invention, after mixing the metal oxide nanoparticle modified with halide anion and the metal nanoparticle modified with electropositive surface modifier, the two can be obtained by combining the two through electrostatic adsorption The composite nanoparticles. The method is simple, easy to operate, and highly repeatable.

[0032]...

Embodiment 1

[0063] A preparation method of composite nanoparticles, comprising the following steps:

[0064] S011.ZnO nanoparticles were prepared as follows:

[0065] Take 2mmol of zinc acetate and disperse it in 5ml of dimethyl sulfoxide (DMSO), take 0.5mmol of hydrated tetramethylammonium hydroxide and disperse it in 5ml of ethanol, and then stir the two mixtures for 60min. 15 ml of heptane was added to the above mixed solution for centrifugation and precipitation, and then the obtained sample was vacuum-dried.

[0066] S012.PbCl 2 The preparation of modified ZnO nanoparticles is as follows:

[0067] S0121. Take 0.5mmol of PbCl 2 Disperse in 5 ml of methylformamide and stir vigorously until the PbCl 2 Dissolve all for later use.

[0068] S0122. Take 100 mg of ZnO nanoparticles prepared in S011 and disperse them in 3 ml of ethanol solution for later use.

[0069] S0123. Mix the solutions in S0121 and S0122 together and stir vigorously under inert gas for 3h.

[0070] S0124. Add a ...

Embodiment 2

[0078] A QLED device, comprising an anode substrate, a hole transport layer, a quantum dot light-emitting layer, an electron transport layer, and a cathode sequentially combined on the anode substrate, wherein the material of the electron transport layer is the composite nanomaterial prepared in Example 1.

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Abstract

The invention provides composite nano particles. The composite nano particles comprise metal oxide nano particles and metal nano particles which are combined with each other, wherein halide anions arecombined on the surfaces of the metal oxide nano particles; the surfaces of the metal nano particles are combined with an electric-positive surface modifying agent; and the metal oxide nano particlesand the metal nano particles are combined with each other through an adsorption effect between the halide anions and the electric-positive surface modifying agent.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a composite nanoparticle and its preparation method and application. Background technique [0002] In the field of new display technology in the future, printing technology is expected to realize the industrial revolution of display. Display components based on quantum dot light-emitting diodes (QLED) and organic light-emitting diodes (OLED) are the subject of technical research. [0003] Printing and coating are a necessary means to realize large-area display technology. Some problems encountered when preparing large-area red, green and blue components (pixels) through printing and coating technology, such as: pixels, especially It is a blue pixel with low efficiency and high lighting voltage. At present, the analysis of these technical problems mainly takes the red, green and blue devices prepared separately by the solution method in the laboratory as the research...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/56H01L51/54
CPCH10K85/00H10K50/165H10K71/00
Inventor 程陆玲杨一行
Owner TCL CORPORATION
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