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Quantum dot compound, preparation method thereof, quantum dot LED light source

A technology of quantum dots and composites, which is applied in the field of quantum dots, can solve the problems affecting the luminous performance of quantum dot LED light sources and the easy failure of quantum dot materials, and achieve the effect of simple preparation method and improved light output stability

Pending Publication Date: 2019-06-14
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, during the working process of the quantum dot LED light source, due to the high surface temperature of the LED chip, the quantum dot material is prone to failure, which affects the luminous performance of the quantum dot LED light source

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation of the quantum dot composite includes the following steps: S1, pretreating the porous clay mineral material; S2, respectively adding the pretreated porous clay mineral material and quantum dots into an organic solvent, and fully stirring to obtain a mixed solution; S3 . Adding light diffusing particles to the mixed liquid obtained in S2, stirring thoroughly, and performing purification treatment to obtain a quantum dot composite. Among them, the pretreatment includes pickling, water washing, and drying in sequence. The purpose of pickling is to remove impurities in the porous clay mineral material. The acid used is an inorganic acid with a pH value between 3 and 6, including but not limited to dilute At least one of hydrochloric acid, dilute nitric acid, and dilute sulfuric acid; washing to remove the acid in the previous step, so that the system reaches a neutral environment; because quantum dots are sensitive to water, further drying can prevent the moi...

Embodiment 1

[0024] Preparation method of quantum dot attapulgite composite:

[0025] S1. Pretreat the attapulgite: after pickling to remove impurities, wash with water until neutral, and dry;

[0026] S2. Add 100 mg of attapulgite and 10 mg of red CdSe quantum dots to the organic solvent after pretreatment, and stir thoroughly to obtain a mixed solution;

[0027] S3. Add 20 mg of titanium dioxide as light-diffusing particles to the mixed solution of S3, and carry out purification treatment after fully stirring to obtain a red CdSe quantum dot attapulgite composite.

Embodiment 2

[0029] Preparation method of quantum dot attapulgite composite:

[0030] S1. Pretreat the attapulgite: after pickling to remove impurities, wash with water until neutral, and dry;

[0031] S2. Add 100 mg of the pretreated attapulgite and 30 mg of red CdSeS quantum dots to the organic solvent, and stir thoroughly to obtain a mixed solution;

[0032] S3. Add 30 mg of zirconia to the S3 mixture as light-diffusing particles, stir thoroughly and perform purification treatment to obtain a red CdSe quantum dot attapulgite composite.

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PUM

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Abstract

The invention discloses a quantum dot compound, a preparation method thereof, and a quantum dot LED light source. The quantum dot compound comprises a quantum dot, a light scattering particle, and a porous clay ore material; the quantum dot and the light scattering particle are in channels of the porous clay ore material. The preparation method of the quantum dot compound comprises following steps: 1, the porous clay ore material is subjected to pretreatment; 2, after pretreatment, the porous clay ore material and the quantum dot are added into an organic solvent respectively, and full stirring is carried out so as to obtain a mixed solution; and 3, the light scattering particle is added into the mixed solution obtained in step 2, full stirring is carried out, and purification treatment iscarried out so as to obtain the quantum dot compound. The preparation method is simple; and the light emitting stability of the quantum dot LED light sources prepared from the quantum dot compound isimproved obviously.

Description

technical field [0001] The application belongs to the field of quantum dots, and in particular relates to a quantum dot composite, a preparation method thereof, and a quantum dot LED light source. Background technique [0002] Due to the advantages of high color purity, adjustable luminous color with size, and high light conversion efficiency, quantum dot materials are research hotspots in display technology. Light Emitting Diode (LED, Light Emitting Diode) uses a cold light source and has the advantages of low glare, no radiation, long life, low power consumption, and high efficiency. It is currently receiving widespread attention in the field of semiconductor lighting technology. [0003] The "On-Chip" method of placing quantum dot materials on blue LED chips is an important way for quantum dots in backlight technology. In the prior art, during the working process of the quantum dot LED light source, due to the high surface temperature of the LED chip, the quantum dot mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/88B82Y20/00B82Y30/00H01L33/04
Inventor 马卜李帅徐晓波王允军
Owner SUZHOU XINGSHUO NANOTECH CO LTD