Novel organic electroluminescence device
An electroluminescent device and electroluminescent technology, which can be used in the fields of electro-solid devices, electrical components, organic chemistry, etc., and can solve problems such as unsatisfactory performance.
Active Publication Date: 2018-03-23
BEIJING ETERNAL MATERIAL TECH +1
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Problems solved by technology
[0006] The performance of the currently known electron transport materials is not ideal, and the industry still urgently needs to develop new electron transport materials
Method used
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[0072] The following describes the preparation of representative compounds of the present invention with reference to the following examples. Since the compounds of the present invention have the same skeleton, those skilled in the art can easily synthesize other compounds of the present invention through known functional group conversion methods based on these preparation methods. Hereinafter, the preparation method and light-emitting property measurement of the light-emitting device including the compound are also provided.
[0073] Synthetic Example:
[0074] The preparation process of the compound of the invention is simple and easy, the raw materials are easy to obtain, and it is suitable for mass production and scale-up.
[0075] Various chemicals used in the synthesis examples such as petroleum ether, ethyl acetate, n-hexane, toluene, tetrahydrofuran, methylene chloride, carbon tetrachloride, acetone, 1,2-bis(bromomethyl)benzene, CuI, Phthaloyl chloride, phenylhydra...
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Abstract
The invention discloses a novel organic electroluminescence device. The device comprises a first electrode, a second electrode and one or more layers of organic layers between the first electrode andthe second electrode. Each organic layer at least comprises a light emitting layer and an electronic transmission layer. The device is characterized in that the thickness of each electronic transmission layer is 5-100nm; each electronic transmission layer comprises at least one kind of compound shown by the formula (I) shown in the description, wherein L is selected from a chemical bond, an arylidene or sub-polycyclic aromatic hydrocarbon group of C6-C12, and a sub-heteroaryl or sub-polycyclic heteroaryl aromatic hydrocarbon group of C3-C12; the Ar1, the Ar2 and the Ar3 are respectively selected from the substituted or non-substituted aryl or polycyclic aromatic hydrocarbon group of C6-C30, and the substituted or non-substituted heteroaryl group or polycyclic heteroaryl aromatic hydrocarbon group of C3-C30; the R1, the R2, the R3 and the R4 are selected from hydrogen, the alkylene of C1-C10, the halogen, the cyan, the nitryl, the substituted or non-substituted aryl or polycyclic aromatic hydrocarbon group of C6-C30, and the substituted or non-substituted heteroaryl group or polycyclic heteroaryl aromatic hydrocarbon group of C3-C30; and the R3 can be connected with the R4, so an annular structure can be formed. According to the invention, the device is advantaged by low working voltage and high light emitting efficiency.
Description
technical field [0001] The invention belongs to the field of organic electroluminescence, and more specifically, the invention relates to a novel organic electroluminescence device, in which a class of novel general formula compounds are used as electron transport layer materials. Background technique [0002] Organic electroluminescent display (hereinafter referred to as OLED) has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, light weight, simple composition and process, etc. Compared with liquid crystal display, organic electroluminescent display is not It needs a backlight source, has a large viewing angle, low power, and its response speed can reach 1000 times that of a liquid crystal display, but its manufacturing cost is lower than that of a liquid crystal display with the same resolution. Therefore, organic electroluminescent devices have broad application prospects. [0003] With the continuous advancement of...
Claims
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IPC IPC(8): H01L51/50H01L51/54C07D239/74C07D401/14C07D405/04C07D403/04C07D409/04C07D401/04C07D405/14C07D401/10
CPCC07D239/74C07D401/04C07D401/10C07D401/14C07D403/04C07D405/04C07D405/14C07D409/04H10K85/622H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K50/16
Inventor 邢其锋李之洋刘叔尧任雪艳
Owner BEIJING ETERNAL MATERIAL TECH
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