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Novel compound and organic light-emitting device containing same

A technology for organic light-emitting elements and compounds, applied in the field of novel compounds and organic light-emitting elements containing them, can solve the problems of low efficiency, short life, difficult practical application, etc., and achieve high efficiency, excellent low voltage, and excellent hole transport characteristics. Effect

Active Publication Date: 2020-09-29
DONGJIN SEMICHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, amine derivatives having a carbazole skeleton have been studied as hole-injecting and hole-transporting materials for such organic light-emitting devices, but they are still being put into practical use due to higher driving voltage, low efficiency, and short lifetime. there are many difficulties

Method used

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  • Novel compound and organic light-emitting device containing same
  • Novel compound and organic light-emitting device containing same
  • Novel compound and organic light-emitting device containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0246] will be Thin film coated glass substrates with indium tin oxide (ITO) were cleaned ultrasonically with distilled water. After cleaning with distilled water, ultrasonically clean and dry with solvents such as isopropanol, acetone, methanol, etc., and then transfer to a plasma cleaner, use oxygen plasma to clean the above-mentioned substrate for 5 minutes, and then use a thermal vacuum coating machine (thermalevaporator) , on the top of the ITO substrate, the hole injection layer HT01 is fabricated film, compound 1 as a hole transport layer membrane. Then, as the above-mentioned light emitting layer, doped with BH01:BD01 5% to manufacture membrane. Then, as an electron transport layer, it was fabricated with Alq3:Liq (1:1) After the membrane, manufacture Liq film, Aluminum (Al) film, the device was sealed in a glove box (Encapsulation), thereby producing an organic light-emitting device.

Embodiment 2 to Embodiment 27

[0248] By the same method as in Example 1, an organic light-emitting device in which a hole injection layer and a hole transport layer were produced using Compounds 2 to 27, respectively, was produced.

Embodiment 28

[0250] will be Thin film coated glass substrates with indium tin oxide (ITO) were cleaned ultrasonically with distilled water. After cleaning with distilled water, ultrasonically clean and dry with solvents such as isopropanol, acetone, methanol, etc., and then transfer to a plasma cleaner, use oxygen plasma to clean the above-mentioned substrate for 5 minutes, and then use a thermal vacuum coating machine (thermalevaporator) , on the top of the ITO substrate, the hole injection layer HT01 is fabricated film, compound 1 as the first hole transport layer film and compound 25 as the second hole transport layer membrane. Then, as the above-mentioned light emitting layer, doped with BH01:BD01 5% to manufacture membrane. Then, as an electron transport layer, it was fabricated with Alq3:Liq (1:1) After the membrane, manufacture Liq Film, Aluminum (Al) film, the device was sealed in a glove box (Encapsulation), thereby producing an organic light-emitting device.

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Abstract

The novel compound of the present invention has a HOMO energy level that is easy to inject holes, has a high LUMO energy level that can block electrons, and has excellent hole transport characteristics, and can be used in hole injection layers, hole transport layers or hole injection layers of organic light-emitting elements. When the hole transport auxiliary layer is used, it can have stability and long life due to its excellent low voltage, high efficiency, and high Tg.

Description

technical field [0001] The present invention relates to a novel compound and an organic light-emitting device comprising the same, and particularly relates to a compound useful as a hole-injecting substance, a hole-transporting substance, or a hole-transporting auxiliary substance. Background technique [0002] In recent years, compared with liquid crystal display (LCD, liquid crystal display), which is the mainstream of flat-panel display elements, self-illuminating organic light-emitting elements that can be driven at low voltages have better viewing angles and contrast ratios, and can be realized without backlights. Lightweight and thin, it is also advantageous in terms of power consumption, and it has a wide range of color reproduction, so it is attracting attention as a next-generation display device. [0003] Materials used as organic layers in organic light-emitting devices can be roughly classified into light-emitting materials, hole-injecting materials, hole-transpo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D209/94C07D209/70C07D209/82C09K11/06H01L51/50
CPCC09B57/008H10K85/636H10K85/633H10K85/6572H10K50/15
Inventor 咸昊完金奉记安贤哲金成勋金东骏裴惟珍赵志恩李萤振林东焕安慈恩
Owner DONGJIN SEMICHEM CO LTD
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