Organic compound for light-emitting device, application of organic compound and organic light-emitting device

An organic compound, unsubstituted technology, applied in the field of organic electroluminescent devices, can solve the problem that the electron injection ability and mobility cannot meet the demand, and achieve the effect of low starting voltage, improving luminous efficiency, and reducing driving voltage

Pending Publication Date: 2021-01-05
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in order to further meet the increasing demand for the optoelectronic performance of OLED devices and the energy-saving needs of mobile electronic devices, the electron injection ability and mobility of the above compounds still cannot meet the demand

Method used

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  • Organic compound for light-emitting device, application of organic compound and organic light-emitting device
  • Organic compound for light-emitting device, application of organic compound and organic light-emitting device
  • Organic compound for light-emitting device, application of organic compound and organic light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0277] The preparation process of the organic electroluminescent device in this example is as follows:

[0278] The glass plate coated with the ITO transparent conductive layer is ultrasonically treated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in acetone: ethanol mixed solvent, baked in a clean environment until the water is completely removed, and then cleaned with ultraviolet light. Light and ozone cleaning, and bombardment of the surface with a beam of low-energy cations;

[0279] Place the above-mentioned glass substrate with the anode in a vacuum chamber, and evacuate until the pressure is less than 10 -5 Pa, 10nm HI-3 is vacuum-evaporated on the above-mentioned anode layer film as a hole injection layer;

[0280] Vacuum-evaporated 40nm HT-4 on the hole injection layer as the first hole transport layer of the device;

[0281] Vacuum-evaporated 10nm of HT-14 on the first hole transport layer as the second hole transport layer of...

Embodiment 2-15 and comparative example 1、2 and 3

[0287] An organic electroluminescent device was obtained in the same manner as in Examples, except that compound C9 was replaced with the compounds in Table 1.

[0288] The organic electroluminescent device prepared by the above process is measured as follows:

[0289] The test system measures the driving voltage and current efficiency of the organic electroluminescent devices prepared in the examples and comparative examples. Specifically, the voltage is increased at a rate of 0.1V per second, and it is determined that when the brightness of the organic electroluminescent device reaches 1000cd / m 2 The voltage at this time is the driving voltage, and the current density at this time is measured at the same time; the ratio of the brightness to the current density is the current efficiency.

[0290] Under the same brightness, according to the above-mentioned preparation steps and test methods, the device embodiments and comparative examples of the present invention are complete...

Embodiment 16

[0296] The glass plate coated with the ITO transparent conductive layer is ultrasonically treated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in acetone: ethanol mixed solvent, baked in a clean environment until the water is completely removed, and then cleaned with ultraviolet light. Light and ozone cleaning, and bombardment of the surface with a beam of low-energy cations;

[0297] Place the above-mentioned glass substrate with the anode in a vacuum chamber, and evacuate until the pressure is less than 10 -5 Pa, 10nm HI-3 is vacuum-evaporated on the above-mentioned anode layer film as a hole injection layer;

[0298] Vacuum-evaporated 40nm HT-4 on the hole injection layer as the first hole transport layer of the device;

[0299] Vacuum-evaporated 10nm of HT-14 on the first hole transport layer as the second hole transport layer of the device;

[0300] Vacuum-deposit a 20nm light-emitting layer on the second hole transport layer, the ...

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Abstract

The invention provides an organic compound having a structure represented by formula (I): wherein each of X1-X4 independently represents N or CR, L1 represents a single bond or an aryl residue, L2 isa single bond or an aryl residue, L1 and L2 are not single bonds at the same time, m and n are integers from 1 to 3, when L1 is a single bond, m is 1, when L2 is a single bond, n is 1, Ar1 and Ar2 areeach independently H, C1-C12 alkyl, C1-C12 alkoxy, substituted or unsubstituted C6-C60 aryl, substituted or unsubstituted C3-C60 heteroaryl or cyano, Ar1 and Ar2 are not H at the same time, Ar1 and Ar2 are not C1-C12 alkyl at the same time, and Ar1 and Ar2 are not C1-C12 alkoxy at the same time. The invention also provides an organic electroluminescent material and an organic electroluminescent device.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to an organic compound and its application, and also relates to an organic electroluminescence device. Background technique [0002] Organic electroluminescent devices (OLED: Organic Light Emission Diodes) are a type of device with a sandwich-like structure, including positive and negative electrode film layers and an organic functional material layer sandwiched between the electrode film layers. Apply voltage to the electrodes of the OLED device, positive charges are injected from the positive electrode, and negative charges are injected from the negative electrode. Under the action of the electric field, the positive and negative charges migrate in the organic layer and recombine to emit light. Due to the advantages of high brightness, fast response, wide viewing angle, simple process, and flexibility, OLED devices have attracted much attention in the field of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/04C07D519/00C07F7/08C09K11/06H01L51/30H01L51/46H01L51/54
CPCC07D487/04C07D519/00C07F7/0816C09K11/06C09K2211/1011C09K2211/1029C09K2211/1033C09K2211/1037C09K2211/1044C09K2211/1048C09K2211/1051C09K2211/1059C09K2211/1074C09K2211/1096C09K2211/1088H10K85/624H10K85/622H10K85/653H10K85/6565H10K85/626H10K85/615H10K85/654H10K85/6574H10K85/6572H10K85/657H10K85/40H10K50/171H10K50/18H10K50/16H10K50/11Y02E10/549
Inventor 孙恩涛方仁杰刘叔尧
Owner BEIJING ETERNAL MATERIAL TECH
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