Title:
ORGANIC LIGHT EMITTING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2022/244503
Kind Code:
A1
Abstract:
This organic light emitting element comprises: a light emitting layer that contains a first organic compound (1), a second organic compound (2) that is a delayed fluorescent material, and a third organic compound (3); and an adjacent layer that is adjacent to the light emitting layer and contains the first organic compound (1). This organic light emitting element satisfies relational expression ES1 (1) > ES1 (2) > ES1 (3), and has a long emission lifetime and high luminous efficiency. In the relational expression, ES1 represents the lowest excited singlet energy.
Inventors:
YOSHIZAKI MAKOTO (JP)
ENDO AYATAKA (JP)
ENDO AYATAKA (JP)
Application Number:
PCT/JP2022/015886
Publication Date:
November 24, 2022
Filing Date:
March 30, 2022
Export Citation:
Assignee:
KYULUX INC (JP)
International Classes:
H01L51/50
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Attorney, Agent or Firm:
SIKS & CO. (JP)
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