A benzanthracene fluorenyl blue-light phosphorescent host material, a preparing method thereof and applications of the material

A benzanthracene fluorene-based, phosphorescent host technology, applied in the directions of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc. Effect
CN104592978AInactive Publication Date: 2015-05-06OCEANS KING LIGHTING SCI&TECH CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
OCEANS KING LIGHTING SCI&TECH CO LTD
Publication Date
2015-05-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of organic electroluminescent materials, and discloses a benzanthracene fluorenyl blue-light phosphorescent host material, a preparing method thereof and applications of the material. The structure formula of the material is shown in the specification. In the material, carbazole is a N-heteroaromatic structure and is an excellent hole transporting unit; and anthracene has a high fluorescence quantum yield, thus largely improving the triplet state energy level of the material and effectively preventing energy from being returned to the host material in a luminescent process, so that the light efficiency is increased.
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Description

technical field

[0001] The invention relates to the field of organic electroluminescent materials, in particular to an anthrafluorenyl blue-light phosphorescent host material and a preparation method and application thereof. Background technique

[0002] Organic electroluminescent devices have the advantages of low driving voltage, fast response speed, wide viewing angle range, rich colors through fine-tuning of chemical structure, easy realization of high resolution, light weight, and large-area flat-panel display. 21st Century Flat Panel Display Technology" has become a research hotspot in the fields of materials, information, physics and flat panel display. Future efficient commercial OLEDs will likely contain organometallic phosphors because they can trap both singlet and triplet excitons, thereby achieving 100% internal quantum efficiency. However, due to the relatively long lifetime of excited-state excitons in transition metal complexes, the unwanted triplet-triplet ...

Claims

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