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An organic compound and its application and an organic electroluminescent device comprising the compound

An organic compound, selected technology, applied in organic chemistry, electrical solid-state devices, luminescent materials, etc., can solve problems such as difficult long-term storage and use, unfavorable industrial production, instability, etc.

Active Publication Date: 2022-05-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this has a certain effect, Ag can only form recombination at the interface by penetrating into Bphen, and the mechanism of action is not clear
Doping ETM with active metals to achieve n-type doping effects, in which such active metals have a low work function and directly act as a strongly reducing n-type dopant, which is unstable in the air and difficult to store and use for a long time. not conducive to industrial production

Method used

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  • An organic compound and its application and an organic electroluminescent device comprising the compound
  • An organic compound and its application and an organic electroluminescent device comprising the compound
  • An organic compound and its application and an organic electroluminescent device comprising the compound

Examples

Experimental program
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Effect test

Embodiment 1

[0200] 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;

[0201] Place the above-mentioned glass substrate with the anode in a vacuum chamber, and evacuate to 1×10 -5 ~9×10 -3 Pa, vacuum evaporated MoO on the above anode layer film 3 As a hole injection layer, the evaporation rate is 0.1nm / s, and the evaporation film thickness is 10nm;

[0202] TAPC was vacuum evaporated on the hole injection layer as the hole transport layer of the device, the evaporation rate was 0.1nm / s, and the total film thickness was 30nm;

[0203] The light-emitting layer of the device is vacuum-evaporated on the hole transport layer. The light-...

Embodiment 2

[0209] The preparation method was the same as in Example 1, except that the material of the electron injection layer was replaced by the compound A-5 of the present invention from A-1, and the A5:Ag evaporation rate ratio was 10%. The device structure is as follows:

[0210] ITO / MoO 3 (10nm) / TAPC(30nm) / PhCzTrz:YH-201(30nm) / Bphen(30nm) / A-5:Ag(5nm) / Al(150nm)

Embodiment 3

[0212] The preparation method was the same as that of Example 1, except that the electron injection material was replaced by the compound A-7 of the present invention from A-1, and the ratio of A-7:Ag evaporation rate was 20%. The device structure is as follows:

[0213] ITO / MoO 3 (10nm) / TAPC(30nm) / PhCzTrz:YH-201(30nm) / Bphen(30nm) / A-7:Ag(5nm) / Al(150nm)

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Abstract

The present invention relates to an organic compound and its application, as well as an organic electroluminescent device comprising the compound. The compound has the structure shown in the following formula (1): wherein, R 1 to R 10 They are independently selected from hydrogen, deuterium or substituted or unsubstituted following groups: C2~C30 aliphatic chain alkoxyl, C2~C30 aliphatic chain amino, C4~C12 cyclic aliphatic chain amino, C6~ One of C30 arylamino, C3~C30 heteroarylamino, C6~C30 monocyclic aryl or fused ring aryl, C3~C30 monocyclic heteroaryl or fused ring heteroaryl, and R 1 to R 10 The two substituents adjacent to each other can be connected by a single bond or by a C, N, O, S or Si bridge to form a cyclic substituent group or a semi-cyclic substituent group. When the compound of the invention is used as an electron injection layer material in an OLED device, it exhibits excellent device performance and stability. The present invention simultaneously protects the organic electroluminescent device using the compound of the above general formula.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescent materials, in particular to an organic compound and its application, and an organic electroluminescent device containing the compound. 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. 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 new display technology and new lighting technology. At present, this technology has been widely used in the display panels of new lighting fixtures, smart phones and tablet computers, and will further expand to the application field of large-size display products such as TVs. It is a new t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D471/04C07D471/22C07D498/22C07D491/22C07D495/22C09K11/06H01L51/50H01L51/54
CPCC07D471/04C07D471/22C07D498/22C07D491/22C07D495/22C09K11/06C09K2211/1029C09K2211/1044C09K2211/1074C09K2211/1077C09K2211/1048C09K2211/1051C09K2211/1081H10K85/6572H10K85/657H10K50/11H10K50/171Y02E10/549
Inventor 段炼卢洋张东东
Owner TSINGHUA UNIV