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A kind of oled long-chain optoelectronic material that can be coated and printed and its preparation method

A technology for optoelectronic materials and light-emitting materials, which is applied in the field of preparation of OLED long-chain optoelectronic materials, can solve the problems of instability of the transport layer and the light-emitting material, poor device stability, difficulty in preparing devices, etc., so as to improve the light-emitting stability and improve the light-emitting Efficiency and longevity, the effect of process simplification

Inactive Publication Date: 2018-03-23
深圳市聚显达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Small molecule OLED host materials are doped with phosphorescent complexes mainly by vacuum evaporation, while polymer OLED devices are made by spin coating or spray printing. The material itself is easy to crystallize, resulting in poor stability of the prepared device, especially the vacuum evaporation method, the instability and mismatch between the transport layer and the luminescent material are prominent, resulting in serious problems such as difficulty in preparing the device and short life, which restricts OLED. development of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Mix polyacrylic acid emulsion, tripolyphosphate, organic amine, ethylenediaminetetraacetic acid and alkylphenol polyoxyethylene ether in a mass ratio of 50:25:15:5:5 and stir evenly to obtain auxiliary glue body fluid;

[0030] (2) Mix 40kg of 8-hydroxyquinoline aluminum compound with 12kg of colloid, add it to the grinder, and slowly increase the grinding pressure to 100g / cm 2 , after grinding for 30 minutes, slowly reduce the grinding pressure until the grinding is stopped, and a uniform colloidal mixture of the transmission material is obtained. During the grinding process, the grinding temperature should be controlled not to exceed 80°C;

[0031] (3) Mix the above mixture with 60kg of N-arylbenzimidazole compounds, add 2kg of dicumyl peroxide, and react at 120°C for 30min, the obtained cross-linked long-chain polymer can be used for inkjet, printing, coating Cloth and other processes are used to produce electroluminescent materials with good matching, luminous...

Embodiment 2

[0034] (1) Mix polyacrylic acid emulsion, tripolyphosphate, organic amine, ethylenediaminetetraacetic acid and alkylphenol polyoxyethylene ether in a mass ratio of 50:20:15:10:5 and stir evenly to obtain auxiliary glue body fluid;

[0035] (2) Mix 50kg of oxadiazole compounds with 15kg of colloidal liquid, add to the grinder, and slowly increase the grinding pressure to 110g / cm 2 , after grinding for 40 minutes, slowly reduce the grinding pressure until the grinding is stopped, and a uniform colloidal mixture of the transmission material is obtained. During the grinding process, the grinding temperature should be controlled not to exceed 80°C;

[0036] (3) Mix the above mixture with 50kg of 1,2,4-triazole derivatives, add 3kg of benzoyl peroxide, and react at 160°C for 25 minutes. The obtained cross-linked long-chain polymer can be used for inkjet, printing, coating Cloth and other processes are used to produce electroluminescent materials with good matching, luminous effici...

Embodiment 3

[0038](1) Mix polyacrylic acid emulsion, tripolyphosphate, organic amine, ethylenediaminetetraacetic acid and alkylphenol polyoxyethylene ether according to the mass ratio of 45:30:10:10:5 and stir evenly to obtain auxiliary glue body fluid;

[0039] (2) Mix 60kg of quinoxaline compounds with 18kg of colloid, add to the grinder, and slowly increase the grinding pressure to 120g / cm 2 , after grinding for 50 min, slowly reduce the grinding pressure until the grinding is stopped, and a uniform colloidal mixture of the transmission material is obtained. During the grinding process, the grinding temperature should be controlled not to exceed 80°C;

[0040] (3) Mix the above mixture with 40kg of 1,3-4-oxadiazole derivatives, add 4kg of di-tert-butyl peroxide, react at 130°C for 20min, and the obtained cross-linked long-chain polymer can be used for inkjet , printing, coating and other processes to produce electroluminescent materials with good matching, luminous efficiency and lon...

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PUM

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Abstract

The invention provides a coating-printable OLED long-chain optoelectronic material and a preparation method. By grinding the transmission material to a uniform colloidal state with the assistance of colloidal liquid, and then directly connecting and assembling with the luminescent material under the action of a crosslinking agent, a long-chain colloidal optoelectronic material is formed to achieve a high degree of matching between the transmission material and the luminescent material. The method greatly simplifies the preparation process of the OLED, and promotes the application process of the OLED. The long-chain optoelectronic material can not only prepare devices by inkjet, printing, and coating, but also improve the luminous efficiency and lifespan of the device.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to the improvement of OLED photoelectric materials, in particular to the preparation of a coating-printable OLED long-chain photoelectric material. Background technique [0002] With the development of social economy, people's requirements for new energy are getting higher and higher. As the world's most attention-grabbing new-generation light source, LED is known as the most promising green lighting source in the 21st century because of its advantages such as high brightness, low heat, long life, non-toxicity, and recyclability. Moreover, compared with traditional displays, LEDs are ultra-thin, fully cured, self-illuminating, without backlight, high brightness, wide viewing angle, fast response, low driving voltage, low power consumption, bright colors, high contrast, and simple process. , good temperature characteristics, flexible display, etc., can be widely used in flat-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/56H01L51/54
CPCH10K85/10H10K71/00
Inventor 赵圣铭
Owner 深圳市聚显达科技有限公司
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