A combination of a host compound and a dopant compound

A compound and dopant technology, which is applied in the direction of indium organic compounds, platinum group organic compounds, compounds of group 4/14 elements of the periodic table, etc., can solve the problems of unmentioned combinations, low glass transition temperature, and power efficiency. Advantages and other issues
CN105531349AInactive Publication Date: 2016-04-27ROHM & HAAS ELECTRONICS MATERIALS LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ROHM & HAAS ELECTRONICS MATERIALS LLC
Publication Date
2016-04-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a specific combination of dopant compounds and host compounds. By using a combination of the dopant and host compounds according to the present invention, an organic electroluminescent device has improved current efficiency compared with conventional light-emitting material, and thus has improved power efficiency at a low driving voltage.
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Description

technical field

[0001] The present invention relates to a combination of a specific dopant and a host compound. Background technique

[0002] An electroluminescence (EL) device is a self-luminous device, which has the advantage of providing a wider viewing angle, higher contrast ratio, and faster response time. Eastman Kodak (EastmanKodak) first developed an organic EL device by using aromatic diamine small molecules and aluminum complexes as materials for forming the light-emitting layer [see Appl. Phys. Lett .), 51, 913, 1987].

[0003] An organic EL device converts electrical energy into light by injecting charges into an organic light-emitting material and generally includes an anode, a cathode, and an organic layer formed between the two electrodes. The organic layer of an organic EL device can be composed of a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer (EBL), an emission layer (EML) (containing a host material and a dopant ma...

Claims

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