Zinc oxide nanoparticle ink and electroluminescent device

A technology of zinc oxide nanoparticles and particles, which is applied in the field of nanometers, can solve the problems of poor film quality of the electron transport layer, easy blockage of nozzles, easy aggregation of zinc oxide nanoparticles, etc., and achieve excellent luminescent properties, reduce adverse effects, and zinc oxide thin films even effect

Inactive Publication Date: 2020-03-31
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the common ZnO nanoparticle ink, the ZnO nanoparticles are easy to agglomerate, and it is easy to clog the nozzle during inkjet printing, and the film-forming quality of the obtained electron transport layer is poor.

Method used

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  • Zinc oxide nanoparticle ink and electroluminescent device
  • Zinc oxide nanoparticle ink and electroluminescent device

Examples

Experimental program
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Effect test

Embodiment 1

[0036] This embodiment provides a zinc oxide nanoparticle ink, including: ZnO nanoparticles with a mass ratio of 5%; diethylene glycol butyl ether with a mass ratio of 36.5% (the first solvent, the boiling point is about 230° C.); 18.1% by mass of 2,5-hexanediol (the second solvent, the boiling point is about 216°C); 22.3% by mass of isononanol (the second solvent, the boiling point is about 193°C); 13.3% isoamyl isovalerate (the third solvent, boiling point is about 193°C); 1H, 1H, 2H, 2H-perfluorooctanol (the fourth solvent, boiling point is about 4.8% by mass) 174°C). The preparation method of the zinc oxide nanoparticle ink adopts the direct mixing of ZnO nanoparticles and a solvent.

[0037] In Example 1, the zinc oxide nanoparticle ink remained stable after being placed for 30 days, and no agglomeration or precipitation occurred. At 25°C, the viscosity and surface tension properties of the zinc oxide nanoparticle ink were tested, and the results are shown in Table 1. ...

Embodiment 2

[0048] This embodiment provides a zinc oxide nanoparticle ink, including: ZnMgO nanoparticles with a mass ratio of 2%; diethylene glycol methyl ether with a mass ratio of 31.8% (the first solvent, the boiling point is about 193° C.); 2,4-pentanediol with a mass ratio of 16.7% (the second solvent, with a boiling point of about 200 °C); isononanol with a mass ratio of 24.8% (the second solvent, with a boiling point of about 193 °C); 20.2% isoamyl isovalerate (the third solvent, boiling point is about 193°C); 1H, 1H, 2H, 2H-perfluorooctanol (the fourth solvent, boiling point is about 4.5% by mass) 174°C). The preparation method of the zinc oxide nanoparticle ink adopts the direct mixing of ZnMgO nanoparticles and a solvent.

[0049] In Example 2, the zinc oxide nanoparticle ink remained stable after being placed for 30 days, and no agglomeration or precipitation occurred. At 25°C, the viscosity and surface tension properties of the ink were tested, and the results are shown in ...

Embodiment 3

[0060] This embodiment provides a zinc oxide nanoparticle ink, including: ZnMgLiO nanoparticles with a mass ratio of 48.1%; dipropylene glycol methyl ether (a first solvent, with a boiling point of about 190° C.) with a mass ratio of 48.1%; and a mass ratio of 10.3 % of 1,4-butanediol (the second solvent, the boiling point is about 228°C); 19.4% of isononanol (the second solvent, the boiling point of about 193°C) by mass; 10.5% by mass of isononanol Isoamyl butyrate (the third solvent, the boiling point is about 179°C); 1H,1H,7H-dodecafluoro-1-heptanol (the fourth solvent, the boiling point is about 170°C) with a mass ratio of 8%. The preparation method of the zinc oxide nanoparticle ink adopts the direct mixing of ZnMgLiO nanoparticles and a solvent.

[0061] In Example 3, the zinc oxide nanoparticle ink remained stable after being placed for 30 days, and no agglomeration or precipitation occurred. At 25°C, the viscosity and surface tension properties of the ink were tested,...

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Abstract

The invention discloses zinc oxide nanoparticle ink and an electroluminescent device. The zinc oxide nanoparticle ink comprises: zinc oxide nanoparticles; a first solvent, which is alcohol ether witha boiling point of 180-300 DEG C; a second solvent, which is alcohol with a boiling point of 180-280 DEG C; a third solvent, which is ester with a boiling point of 175-280 DEG C; and a fourth solvent,which is fluorocarbon alcohol with a boiling point of 170-220 DEG C. The zinc oxide nanoparticles can be uniformly and stably dispersed in the above system, and the phenomenon of agglomeration or precipitation is avoided after the zinc oxide nanoparticles are placed for a long time. When the zinc oxide nanoparticle ink is used as an electron transport layer of the electroluminescent device, the electroluminescent device has excellent electroluminescent performance.

Description

technical field [0001] The application belongs to the field of nanotechnology, and in particular relates to a zinc oxide nanoparticle ink and an electroluminescent device. Background technique [0002] Zinc oxide nanoparticles are a new type of wide-bandgap semiconductor material. Due to their large energy band gap and exciton binding energy, zinc oxide nanoparticles have high electron mobility and are often used as electron transport layers in electroluminescent devices. . [0003] In the prior art, the electron transport layer is usually prepared by an inkjet printing method using zinc oxide nanoparticle ink. However, in common zinc oxide nanoparticle inks, the zinc oxide nanoparticles are easy to agglomerate, and the nozzles are easily blocked during the inkjet printing process, and the film-forming quality of the obtained electron transport layer is poor. SUMMARY OF THE INVENTION [0004] In view of the above technical problems, the present application provides a zin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/36H01L51/54H01L51/50B82Y30/00
CPCC09D11/36B82Y30/00H10K50/16H10K2102/00
Inventor 方龙王允军刘东强史横舟
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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