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Organic electroluminescent device and electronic apparatus

An electroluminescent device, an organic technology, applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve the problems of short lifespan and low luminous efficiency of devices, and achieve improved luminous efficiency, lowered injection barrier, and improved lifespan Effect

Inactive Publication Date: 2019-11-29
SHAANXI LIGHTE OPTOELECTRONICS MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an organic electroluminescent device and electronic device, which can solve the problems of low luminous efficiency and short life of existing devices

Method used

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  • Organic electroluminescent device and electronic apparatus
  • Organic electroluminescent device and electronic apparatus
  • Organic electroluminescent device and electronic apparatus

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] Preparation of compound 1-1

[0063]

[0064] Under the protection of nitrogen, add 133.75mmol of 1-adamantanol, 127.38mmol of 4-chloro-p-terphenyl, and 337mL of dichloromethane into the reaction flask. Concentrated sulfuric acid 318.45mmol. After the dropwise addition was completed, the reaction was kept for 3 hours, and quenched by adding water. Separation, extraction, washing, drying, filtering and concentration. Use a mixed solvent of dichloromethane and n-heptane to pass through the column and recrystallize to a purity (LC)>95%. After drying, white solid 1-(4"-chloro-[1,1':4',1"-terphenyl]-4-yl)adamantane was obtained. Yield: 68%.

[0065]

[0066] Under nitrogen protection, (1,3s)-1-(4"-chloro-[1,1':4',1"-terphenyl]-4-yl)adamantane 86.618mmol was added to the reaction flask, 2 -Amino-9,9-dimethylfluorene 86.618mmol, toluene 691mL, sodium tert-butoxide 259.854mmol, stirring, heating to 70-80°C, slowly adding Pd 2 dba 3 0.86618mmol, s-PHOS 1.7324mmol, ...

Embodiment 1

[0244] Example 1: Fabrication of a blue organic light-emitting device

[0245] A 40mm×40mm×0.7mm thick glass substrate with an ITO transparent electrode (anode) was used for UV ozone and N 2 The coated surface of the substrate is treated with plasma, and then the cleaned anode glass with ITO transparent electrode is placed on the substrate shelf of the vacuum evaporation equipment.

[0246] First, a layer of hexacyanine-1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile (HAT-CN) film with a thickness of 10 nm was prepared by vacuum evaporation on an ITO transparent electrode as Hole Injection Layer (HIL);

[0247] Next, a layer of NPB was vapor-deposited on the hole injection layer to form a hole transport layer (HTL) with a film thickness of 110 nm;

[0248] Subsequently, compound 1-1 was vacuum evaporated on the hole transport layer to form an electron blocking layer (EBL) with a film thickness of 15 nm;

[0249] In addition, on the electron blocking layer, the anthracene ...

Embodiment 12

[0255] Example 12: Compound 2-2 was used instead of Compound 2-1 in Example 1 when preparing the electron transport layer. Other structures were produced by the same method as in Example 1 except that.

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Abstract

The present invention provides an organic electroluminescent device and an electronic device, wherein an electron blocking layer comprises a compound represented by a chemical formula 1, and an electron transport layer comprises a compound represented by a chemical formula 2. The organic electroluminescent device has a lower driving voltage, higher light-emitting efficiency and power efficiency and longer service life.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to an organic electroluminescence device and an electronic device. Background technique [0002] In recent years, an organic electroluminescent device (OLED: Organic electroluminescent device), as a new generation display technology, has gradually entered people's field of vision. A common organic electroluminescent device is composed of an anode, a cathode, and more than one organic layer arranged between the cathode and the anode. When a voltage is applied to the cathode and anode, the two electrodes generate an electric field. Under the action of the electric field, the electrons on the cathode side move to the light-emitting layer, and the electrons on the anode side also move to the light-emitting layer. The two combine to form excitons in the light-emitting layer, and the excitons are excited. The state releases energy outward, and the process of releasing...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54
CPCH10K85/615H10K85/626H10K85/633H10K85/6576H10K85/6572H10K85/6574H10K50/00H10K50/15
Inventor 曹佳梅张孔燕冯震孙占义
Owner SHAANXI LIGHTE OPTOELECTRONICS MATERIAL CO LTD
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