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Organic luminescent compound and organic electroluminescent device

A technology for electroluminescent devices and light-emitting compounds, which is applied to silicon organic compounds, electro-solid devices, electrical components, etc., can solve the problems of short lifespan and low light-emitting efficiency of devices, and achieve accelerated quenching, improved light-emitting efficiency, and electron transport. Ability-enhancing effect

Pending Publication Date: 2022-04-05
西安凯翔光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When applying organic electroluminescent devices to image display devices, it is necessary to improve the efficiency and lifespan of organic electroluminescent devices. The material and properties of the organic layer have a very important impact on the luminescent properties of the device, so it is necessary to continuously develop and stabilize To achieve the required materials for organic electroluminescent devices, to solve the phenomenon of low luminous efficiency and short life of the device

Method used

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  • Organic luminescent compound and organic electroluminescent device
  • Organic luminescent compound and organic electroluminescent device
  • Organic luminescent compound and organic electroluminescent device

Examples

Experimental program
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Effect test

Embodiment 1

[0029] An organic luminescent material L002, namely the compound numbered L002, the specific synthesis steps are as follows:

[0030] Under nitrogen protection system, weigh A-002 (14.11mmol, 5g), B-002 (12.83mmol15.96g) into the reaction system, add 200ml of toluene, 100ml of absolute ethanol and 100mL of pure water mixed solution, add 4.76 g of anhydrous sodium carbonate and 0.16 g of tetrakis(triphenylphosphine)palladium, heated at 90°C under nitrogen protection and kept stirring for 48 hours, TLC spot plate monitoring raw material B-002 had no residue, then cooled the reaction system to 30°C, and depressurized Filter, rinse the filter cake with 150ml of ethanol and 150ml of petroleum ether in sequence, dry the filter cake in vacuum, add the obtained solid to 150ml of toluene, raise the temperature of the reaction system to 110°C, and keep the After heating and stirring at 110°C for 10 hours, the reaction system was cooled to 30°C, the solution was filtered under reduced pr...

Embodiment 2

[0038] An organic luminescent material L019, namely the compound numbered L019, the specific synthesis steps are as follows:

[0039] Under nitrogen protection system, weigh A-019 (14.11mmol, 5g), B-019 (12.83mmol16.14g) into the reaction system, add 200ml of toluene, 100ml of absolute ethanol and 100mL of pure water mixed solution, add 4.80 g of anhydrous sodium carbonate and 0.20 g of tetrakis(triphenylphosphine)palladium, heated at 90°C under the protection of nitrogen and kept stirring for 48 hours, TLC spot plate monitoring raw material B-019 had no residue, then cooled the reaction system to 30°C, and depressurized Filter, rinse the filter cake with 150ml of ethanol and 150ml of petroleum ether in sequence, dry the filter cake in vacuum, add the obtained solid to 150ml of toluene, raise the temperature of the reaction system to 110°C, and keep the After heating and stirring at 110°C for 10 hours, the reaction system was cooled to 30°C, the solution was filtered under red...

Embodiment 3

[0047] An organic luminescent material L043, namely the compound numbered L043, the specific synthesis steps are as follows:

[0048] Under a nitrogen protection system, weigh A-043 (14.11mmol, 5g), and add B-043 (11.76mmol15.63g) into the reaction system, add a mixed solution of 200ml toluene, 100ml absolute ethanol and 100mL pure water, add 4.36 g of anhydrous sodium carbonate and 0.14 g of tetrakis(triphenylphosphine)palladium, heated at 90°C under nitrogen protection and kept stirring for 48 hours, TLC spot plate monitoring raw material B-043 had no residue, then cooled the reaction system to 30°C, and depressurized Filter, rinse the filter cake with 130ml of ethanol and 130ml of petroleum ether in sequence, dry the filter cake in vacuum, add the obtained solid to 120ml of toluene, raise the temperature of the reaction system to 110°C, and keep the After heating and stirring at 110°C for 10 hours, the reaction system was cooled to 30°C, the solution was filtered under reduce...

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Abstract

According to the organic light-emitting compound and the self-light-emitting display device provided by the invention, holes and electrons injected from a first electrode and a second electrode are compounded in an emission layer, and light is emitted from a light-emitting material including the organic compound in the emission layer for display. By selecting a specific heterocyclic ring combination, the obtained organic light-emitting compound improves the electron transmission efficiency after being applied to an electron transmission layer of the organic electroluminescent device, and an ytterbium ion modified tin dioxide film is attached to the electron transmission layer, and an Ir (Me-ppy) 3 light-emitting doping material is added, so that the electron transmission capability is greatly improved, and the organic electroluminescent device has the advantages of high light-emitting efficiency, high light-emitting efficiency and the like. Holes and electrons in the device are balanced, the luminous efficiency of the device is improved, and the service life of the device is prolonged.

Description

technical field [0001] The invention relates to the field of organic luminescent materials, in particular to an organic luminescent material and an organic electroluminescent device. Background technique [0002] The organic electroluminescent display device is different from the liquid crystal display device. The self-luminous display device is composed of holes and electrons injected from the first electrode and the second electrode in the emissive layer. The luminescent material emits light to realize a display. When applying organic electroluminescent devices to image display devices, it is necessary to improve the efficiency and lifespan of organic electroluminescent devices. The material and properties of the organic layer have a very important impact on the luminescent properties of the device, so it is necessary to continuously develop and stabilize Realize the required materials for organic electroluminescent devices to solve the phenomenon of low luminous efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/08C09K11/06H01L51/54H01L51/50
Inventor 周扬张小良刘士忠胡孙浩
Owner 西安凯翔光电科技有限公司
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