Indole compound-containing composition and light-emitting device using the composition

A technology for light-emitting elements and compounds, applied in the field of compositions containing indole compounds, can solve the problems of low luminous efficiency and low triplet excitation energy of light-emitting materials, and achieve excellent luminous efficiency, large triplet excitation energy and low LUMO. Effect
CN101636468AInactive Publication Date: 2010-01-27SUMITOMO CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUMITOMO CHEM CO LTD
Publication Date
2010-01-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed is a composition containing a compound having an indole ring structure and a phosphorescent compound.
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Description

technical field

[0001] The present invention relates to a composition containing an indole compound and a light-emitting device obtained by using the composition. Background technique

[0002] As a light-emitting material used in the light-emitting layer of a light-emitting element, a compound that exhibits light emission from a triplet excited state (hereinafter sometimes referred to as a "phosphorescent compound") is known. The element used in the light-emitting layer has high luminous efficiency. When a phosphorescent compound is used in a light-emitting layer, a composition obtained by adding the compound to a matrix is ​​generally used as a light-emitting material. Since a thin film can be formed by coating, a polymer such as polyvinylcarbazole is used as a matrix (Patent Document 1).

[0003] However, the above compound has a problem that it is difficult to inject electrons because the lowest unoccupied molecular orbital (hereinafter sometimes referred to as "LUMO") i...

Claims

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