An electron injection material and an organic light-emitting device

An electron injection material, an unsubstituted technology, applied in the field of electron injection materials and organic light-emitting devices, can solve the problems of inferior injection properties as alkali metals, bottlenecks in transfer efficiency, life of cracking devices, etc., and achieve molecular stability, high electron injection capability, Combining simple effects
CN111848636BActive Publication Date: 2022-02-11WUHAN TIANMA MICRO ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN TIANMA MICRO ELECTRONICS CO LTD
Publication Date
2022-02-11

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Abstract

The present invention provides an electron injection material, as shown in formula (I); wherein, the R 1 with R 2 Each independently is a substituted or unsubstituted alkylamino group, a substituted or unsubstituted heterocyclic group, and a derivative group thereof. Compared with the prior art, the adamantane organic base provided by the present invention takes amantadine as the core, and at the same time connects a structure capable of transporting electrons as an electron injection material, which can form a hydrogen bond with the electron transport material to achieve high electron density. Injection ability, it does not need to consider ionization energy, and the synthesis of the electron injection material is simple, the molecule is stable, while ensuring the formation of hydrogen bonds, the molecule also has flexible branched chains, which is convenient to make inkjet materials, not only can be used for direct vapor deposition Coating can also be used to make devices in the form of inkjet, which helps to reduce costs.
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Description

technical field

[0001] The invention belongs to the technical field of organic photoelectric materials, in particular to an electron injection material and an organic light emitting device. Background technique

[0002] In recent years, the application of various new organic semiconductor materials and new organic semiconductor device structures has made significant progress in OLED performance and industrialization. Compared with traditional inorganic semiconductor materials, organic semiconductor materials have obvious advantages. However, the carrier concentration and mobility of organic semiconductor materials, especially electron transport materials, are relatively low, and the mobility of electrons in organic semiconductor materials is generally lower than that of holes, such as figure 1 As shown in (a), the injection and transport of electrons in OLEDs is more difficult than that of holes, so electrons and holes cannot be completely recombined in the recombination reg...

Claims

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