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Organic electro-luminescent material and organic light emitting device thereof

An electroluminescent material and organic technology, applied in the direction of luminescent materials, electro-solid devices, electrical components, etc., can solve the problems of low luminous efficiency, high driving voltage, unsatisfactory luminous performance, etc., and achieve high luminous efficiency and low driving voltage. , the effect of strong carrier transport capacity

Inactive Publication Date: 2018-02-23
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Fluorene compounds are a commonly used host material, but the common fluorene materials have unsatisfactory luminous properties, such as low luminous efficiency and high driving voltage.

Method used

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  • Organic electro-luminescent material and organic light emitting device thereof
  • Organic electro-luminescent material and organic light emitting device thereof
  • Organic electro-luminescent material and organic light emitting device thereof

Examples

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preparation example Construction

[0038] The preparation method of a kind of organic electroluminescent material described in the present invention, comprises that shown raw material generates a kind of organic electroluminescent material shown in formula I by following route reaction:

[0039]

[0040] Among them, R 1 , R 2 Independently selected from substituted or unsubstituted C6-C50 aryl, substituted or unsubstituted C6-C50 arylamine, substituted or unsubstituted C6-C50 aryl ether, substituted or unsubstituted C6-C50 aryl sulfide, substituted Or one of unsubstituted C5-C50 heteroaryl; L is selected from substituted or unsubstituted C6-C50 aryl, substituted or unsubstituted C6-C50 arylamine, substituted or unsubstituted C5-C50 heteroaryl one of the bases;

[0041] The heteroatom in the heteroaryl group is at least one of B, N, O, S, Si and P;

[0042] n is 1 or 2.

[0043] The present invention also provides an organic light emitting device, and the organic light emitting device may be an organic li...

Embodiment 2

[0047] Embodiment 2: the preparation of compound 2

[0048] The synthesis method is the same as in Example 1, except that 1,4-benzenediboronic acid is replaced by 1,3-benzenediboronic acid.

Embodiment 3

[0049] Embodiment 3: the preparation of compound 7

[0050] The synthesis method is the same as in Example 2, except that phenylboronic acid is replaced by (4-(9H-carbazolyl)phenyl)phenylboronic acid.

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Abstract

The invention provides an organic electro-luminescent material and an organic light emitting device thereof, relating to the technical field of organic photoelectric materials. The organic electro-luminescent material contains fluorene that is different from common 9, 9-diphenylfluorene or 9, 9-dimethylfluorene. The compound of the invention has a smaller conjugate scope, and has a higher tripletstate energy level and relatively higher carrier transport capacity. Due to induction of a rigid structure, glass transition temperature of a compound is improved effectively. The organic electro-luminescent material can be applied to organic light emitting devices, and is particularly used as a main material in a light emitting layer, so that technical problems such as low light emitting efficiency, high drive voltage and other poor light emitting performance of the organic photoelectric materials in the prior art are solved, the lowest drive voltage is 3.6V, and the light emitting efficiencyreaches 40.6cd / A.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to an organic electroluminescence material and an organic light emitting device thereof. Background technique [0002] Organic electroluminescence refers to the phenomenon that organic materials are excited by electric current and electric field to emit light under the action of electric field. Organic light-emitting diodes (OLEDs) are a next-generation display technology that utilizes this phenomenon to realize displays. Since Tang C.W. and Vanslyke S.A. of American Kodak Company produced the first organic electroluminescent device with excellent performance in 1987, organic electroluminescent displays have attracted great interest due to their advantages. [0003] Organic electroluminescent materials can be divided into two generations according to technological updates. The first generation is fluorescent materials, whose internal quantum efficiency can o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C15/27C07C15/28C07C211/54C07C43/275C07C321/30C07D209/86C07D307/91C07D333/76C07D213/16C07C13/72C07C13/567C07D215/06C07D265/38C07D401/14C07D405/14C07D409/14C07D413/14C09K11/06H01L51/54H01L51/50
CPCC09K11/06C07C13/567C07C13/72C07C15/27C07C15/28C07C43/275C07C211/54C07C321/30C07D209/86C07D213/16C07D215/06C07D265/38C07D307/91C07D333/76C07D401/14C07D405/14C07D409/14C07D413/14C09K2211/1088C09K2211/1092C09K2211/1033C09K2211/1007C09K2211/1011C09K2211/1014C09K2211/1029H10K85/623H10K85/624H10K85/622H10K85/626H10K85/633H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K85/657H10K50/11
Inventor 孙可一蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
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