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Compound, application thereof and organic light-emitting device comprising compound

A general compound, unsubstituted technology, applied in the field of organic electroluminescent devices, can solve the problems of high driving voltage, short display life, affecting technical practicality, etc. The effect of interaction forces

Pending Publication Date: 2020-12-25
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, OLED display technology still has the problems of high driving voltage and short display life, which seriously affect the further practical use of this technology.

Method used

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  • Compound, application thereof and organic light-emitting device comprising compound
  • Compound, application thereof and organic light-emitting device comprising compound
  • Compound, application thereof and organic light-emitting device comprising compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0124] The OLED includes a first electrode and a second electrode, and a layer of organic material between the electrodes. The organic material can in turn be divided into regions. For example, the organic material layer may include a hole transport region, a light emitting layer, and an electron transport region.

[0125] In particular embodiments, a substrate may be used either below the first electrode or above the second electrode. The substrates are all glass or polymer materials with excellent mechanical strength, thermal stability, water resistance and transparency. In addition, a thin-film transistor (TFT) may be provided on a substrate for a display.

[0126] The first electrode may be formed by sputtering or depositing a material used as the first electrode on the substrate. When the first electrode is used as the anode, oxide transparent conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), tin dioxide (SnO2), zinc oxide (ZnO) and any comb...

Embodiment 1

[0173] Prepare the organic electroluminescent device IVD-1, the specific preparation process is as follows:

[0174] 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;

[0175] Place the above-mentioned glass substrate with anode in a vacuum chamber, and evacuate to -5 Pa, 10nm of HT-4:HI-3 (97 / 3, w / w) mixture was vacuum thermally evaporated sequentially on the above-mentioned anode layer film as the hole injection layer, and 60nm of the compound C1 of the present invention was used as the hole transport layer Floor;

[0176] On top of the hole transport layer, HT-14 was vacuum evaporated as the electron blocking layer of ...

Embodiment 2-7

[0180] Organic electroluminescence devices IVD-2 to IVD-7 were prepared by the same method as IVD-1, replacing C1 in the hole transport layer with the corresponding material as described in the hole transport layer in Table 1.

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Abstract

The invention relates to a compound, application thereof and an organic light-emitting device comprising the compound. The compound has a structure as shown in the following formula (1), wherein X isselected from O, S or Se; L1 is selected from substituted or unsubstituted arylene groups of C6-C30; Ar1-Ar3 are each independently selected from one of a substituted or unsubstituted C6-C30 aryl group and a substituted or unsubstituted C3-C30 heteroaryl group, and R1 to R3 each independently represent a monosubstituted group to a maximum permissible substituent group, and each is independently selected from one of hydrogen, C1-C30 alkyl, C1-C30 alkoxy, halogen, cyano, nitro, hydroxyl, silyl, amino, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl. When the compound provided by the invention is used as a hole transport layer material or an electronblocking layer material in an OLED device, excellent device performance and stability are shown. The invention also discloses an organic light-emitting device adopting the compound with the general formula.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a compound and its application, and an organic electroluminescence device containing it. Background technique [0002] OLED (organic light-emitting diode) refers to the phenomenon that organic functional materials are excited by current and voltage under the action of an electric field to produce light. It is a process of directly converting electrical energy into light energy. In 1979, Dr. Deng Qingyun, the "father of OLED", accidentally discovered the electroluminescent properties of organic thin film devices in the laboratory; in 1987, Dr. Deng Qingyun and others produced TPD as a hole transport material, Alq 3 It is an OLED device with a double-layer structure of light-emitting materials. The device can achieve a brightness of 1000 nits at 10V and a lifespan of more than 100 hours, making the practical application of OLED technology possible. OLED device ...

Claims

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Application Information

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IPC IPC(8): C07D333/76C07D307/91C07D409/12C07D405/12H01L51/50H01L51/54
CPCC07D333/76C07D307/91C07D409/12C07D405/12H10K85/622H10K85/624H10K85/615H10K85/6576H10K85/6574H10K85/6572H10K50/15H10K50/00
Inventor 王志鹏曾礼昌
Owner BEIJING ETERNAL MATERIAL TECH
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