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Preparation method of ZnLiMgO nanoparticles and product prepared from ZnLiMgO nanoparticles

A technology of nano-particles and magnesium salts, applied in chemical instruments and methods, semiconductor/solid-state device manufacturing, inorganic chemistry, etc., can solve problems such as short life, high energy consumption of light-emitting devices, and failure to meet the requirements of the display industry

Inactive Publication Date: 2018-08-24
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it was found that when the ZnO nanoparticles prepared by the traditional method were used as the electron transport layer, the light-emitting device had high energy consumption and short life, which could not meet the requirements of the display industry.

Method used

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  • Preparation method of ZnLiMgO nanoparticles and product prepared from ZnLiMgO nanoparticles
  • Preparation method of ZnLiMgO nanoparticles and product prepared from ZnLiMgO nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Including the following steps:

[0027] S1, at 25° C., mix 6 mmol of lithium acetate dihydrate and 20 mL of ethylene glycol methyl ether, and in addition, add 6 mmol of tetramethylammonium hydroxide pentahydrate to obtain a first reaction system.

[0028] S2: Add 4mmol of zinc acetate dihydrate to the first reaction system and stir for 2h to obtain a ZnLiO dispersion system.

[0029] S3: Add 0.6 mmol of magnesium acetate tetrahydrate to the ZnLiMgO dispersion system of S2, the temperature of the water bath is 15 DEG C, and the ultrasonic for 20 min, to obtain ZnLiMgO nanoparticles.

[0030] Ethylene glycol methyl ether as a surface ligand is attached to the surface of ZnLiMgO nanoparticles.

[0031] According to ICP-MS test, the molar ratio of Zn, Li and Mg in ZnLiMgO is 100:24:28. After XRD test analysis (such as figure 1 As shown in curve A), the ZnLiMgO nanoparticles have a wurtzite structure. After calculation, the band gap width of ZnLiMgO nanoparticles is 3.57eV. The ca...

Embodiment 2

[0034] Including the following steps:

[0035] S1, at 22° C., mix 6 mmol of lithium acetate dihydrate and 20 mL of ethylene glycol propyl ether, and add 6 mmol of tetramethylammonium hydroxide pentahydrate to obtain the first reaction system.

[0036] S2: Add 4 mmol of zinc acetate dihydrate and 0.2 mmol of magnesium acetate tetrahydrate to the first reaction system, and stir for 2 hours to obtain a ZnLiMgO dispersion system.

[0037] S3: Add 0.4 mmol magnesium acetate tetrahydrate to the ZnLiMgO dispersion system of S2, the temperature of the water bath is 20 DEG C, and the ultrasonic for 45 min, to obtain ZnLiMgO nanoparticles.

[0038] Ethylene glycol propyl ether is attached to the surface of ZnLiMgO nanoparticles as a surface ligand.

[0039] According to the ICP-MS test, the molar ratio of Zn, Li and Mg in ZnLiMgO is 100:16:23. After XRD test analysis (such as figure 1 As shown by curve B), the ZnLiMgO nanoparticles have a wurtzite structure. After calculation, the band gap wid...

Embodiment 3

[0042] Including the following steps:

[0043] S1, at 23° C., mix 3 mmol of lithium sulfate, 10 mL of ethylene glycol methyl ether and 10 mL of PEG200, and also add 3 mmol of tetramethylammonium hydroxide pentahydrate to obtain the first reaction system.

[0044] S2: Add 3 mmol of zinc acetate dihydrate and 0.1 mmol of magnesium nitrate to the first reaction system, and stir for 0.5 h to obtain a ZnLiMgO dispersion system.

[0045] S3: Add 0.2 mmol magnesium nitrate to the ZnLiMgO dispersion system of S2, and the temperature of the water bath is 35° C. and ultrasonic for 60 min to obtain ZnLiMgO nanoparticles.

[0046] Ethylene glycol methyl ether as a surface ligand is attached to the surface of ZnLiMgO nanoparticles.

[0047] According to ICP-MS testing, the molar ratio of Zn element, Li element and Mg element in ZnLiMgO is 100:7:12. After XRD test analysis (such as figure 1 As shown by the middle C curve), the ZnLiMgO nanoparticles have a wurtzite structure. After calculation, the...

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Abstract

The invention discloses a preparation method of ZnLiMgO nanoparticles and a product prepared from the ZnLiMgO nanoparticles. Lithium salt and alcohol ether are mixed at the room temperature in an alkaline environment, and a first reaction system is obtained; zinc salt is added to the first reaction system, and a ZnLiO dispersion system is obtained after a reaction; magnesium salt is added to the ZnLiO dispersion system, and ZnLiMgO nanoparticles are obtained after a reaction. The ZnLiMgO nanoparticles prepared with the method have surface ligand which is C3-C5 straight-chain alcohol ether. TheZnLiMgO nanoparticles have good film forming property when used as an electron transport layer of a light emitting device, and the service life of the device is prolonged.

Description

Technical field [0001] The application belongs to the field of semiconductor materials, and specifically relates to a method for preparing ZnLiMgO nanoparticles and products prepared therefrom. Background technique [0002] ZnO nanoparticles are used in liquid crystal displays, thin film transistors, light-emitting diodes and other products in the semiconductor field due to their surface effect, volume effect, quantum size effect, macro-tunneling effect, high transparency and high dispersion. [0003] As a new wide band gap semiconductor material, ZnO has a band gap width of 3.3 eV at room temperature, large energy band gap and exciton binding energy, and high electron mobility. It is often used as an electron transport layer for light-emitting devices. However, it is found that the light-emitting device has high energy consumption and short life when the ZnO nanoparticles prepared by the traditional method are used as the electron transport layer, which cannot meet the requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/00H01L51/50
CPCC01G9/006C01P2006/40C01P2002/72H10K50/16H10K2102/00
Inventor 王允军刘东强李敬群孙存艳
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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