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Quantum dot film and preparation method of alumina-coated quantum dots

A technology of coating quantum and quantum dots, which is applied in the field of quantum dots, can solve the problems of high risk of reaction and unsuitable for industrial production, and achieve the effects of improving stability, good flatness and avoiding erosion

Inactive Publication Date: 2019-04-19
SHENZHEN PLANCK INNOVATION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method uses metal alkoxide as a raw material, but introduces water as a reactant in the reaction, the reaction is dangerous, and it is not suitable for industrial production

Method used

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  • Quantum dot film and preparation method of alumina-coated quantum dots
  • Quantum dot film and preparation method of alumina-coated quantum dots
  • Quantum dot film and preparation method of alumina-coated quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides a method for preparing alumina-coated quantum dots, the preparation method is:

[0051] Mix the red light CdSe / CdS / CdZnS quantum dot dispersion with a concentration of 50mg / mL and cyclohexane, the volume ratio of cyclohexane to quantum dot dispersion is 1000:6, and add three Ethyl aluminum solution (1M), the volume ratio of described triethyl aluminum solution and quantum dot dispersion liquid is 1:3, under the stirring of 300rpm, react 2h, after reaction finishes, sample is taken out from glove box, uses reaction The obtained alumina-coated quantum dots were washed three times with cyclohexane, and then dried at 60° C. to obtain pure alumina-coated red CdSe / CdS / CdZnS quantum dots.

[0052] The TEM image of the alumina-coated red CdSe / CdS / CdZnS quantum dots prepared in this example is as follows figure 2 As shown, it can be seen that alumina can effectively coat quantum dots, and at the same time, there are no obvious free quantum dots in the ...

Embodiment 2

[0054] This embodiment provides a preparation method of alumina-coated quantum dots, the preparation method is:

[0055] The green light alloy CdZnSeS quantum dot dispersion liquid with a concentration of 30mg / mL is mixed with n-hexane, and the volume ratio of n-hexane and quantum dot dispersion liquid is 1000:1, and triethylaluminum solution is added dropwise in a nitrogen state glove box ( 0.5M), the volume ratio of the triethylaluminum solution and the quantum dot dispersion liquid is 1:5, react 3h under the stirring of 100rpm, after the reaction finishes, the sample is taken out from the glove box, use normal hexane to react The obtained alumina-coated quantum dots were washed 5 times, and then dried at 80° C. to obtain pure alumina-coated green light alloy CdZnSeS quantum dots.

Embodiment 3

[0057] This embodiment provides a preparation method of alumina-coated quantum dots, the preparation method is:

[0058] Mix the green light alloy CdZnSeS quantum dot dispersion with a concentration of 80mg / mL and chloroform, the volume ratio of chloroform and quantum dot dispersion is 1000:10, add triethylaluminum solution (2M) dropwise in a nitrogen state glove box , the volume ratio of the triethylaluminum solution to the quantum dot dispersion is 1:8, reacted for 6h under stirring at 500rpm, after the reaction, the sample was taken out from the glove box, and the reaction was carried out using chloroform to obtain the The alumina-coated quantum dots were washed once, and then dried at 50°C to obtain pure alumina-coated green light alloy CdZnSeS quantum dots.

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Abstract

The invention provides a quantum dot film and a preparation method of alumina-coated quantum dots. The preparation method of the alumina-coated quantum dots comprises the steps of mixing a quantum dotdispersion liquid with an organic solvent, dropwise adding a triethyl aluminum solution, and obtaining the alumina-coated quantum dots after the reaction is finished. The alumina-coated quantum dotsprepared by the preparation method are adopted as raw materials for preparing the quantum dot film. An alumina-coated layer in the material can effectively relieve the corrosion of a catalyst in glueon the quantum dots, so that the luminous efficiency of the quantum dots in a use process of the prepared quantum dot film is not attenuated.

Description

technical field [0001] The invention belongs to the technical field of quantum dots, and relates to a preparation method of alumina-coated quantum dots, in particular to a film preparation of alumina-coated quantum dots. Background technique [0002] In recent years, there have been many studies on quantum dots, which have adjustable wavelengths of emitted light in the visible light band, narrow half-maximum width, high luminous efficiency, and wide display color gamut, and have strong applications in white LEDs, QLEDs, and displays. application potential. [0003] The preparation of quantum dot films requires mixing QDs and glue before coating, or using other industrial film-making equipment to produce quantum dot films. The uniformity of its film will affect its luminous efficiency, and at the same time, the luminous uniformity of the film is very high in the display field. However, there are long-chain ligands such as oleic acid and oleylamine on the surface of quantum ...

Claims

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Application Information

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IPC IPC(8): C09K11/02C09D5/22
CPCC09K11/025C09D5/22C08K3/30C08K2003/3009C08K9/10
Inventor 孙小卫王恺杨鸿成徐冰刘乙樽蔡睿汪召锦方凡
Owner SHENZHEN PLANCK INNOVATION TECH CO LTD
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