ORGANIC LIGHT-EMITTING ELEMENT, METHOD FOR EVALUATING DELAYED FLUORESCENCE MATERIAL, METHOD FOR DESIGNING DELAYED FLUORESCENCE MATERIAL, METHOD FOR DESIGNING ORGANIC LIGHT-EMITTING ELEMENT, AND PROGRAM

Title:

Document Type and Number:

WIPO Patent Application WO/2023/167271

Kind Code:

A1

Abstract:

This organic light-emitting element having a light-emitting layer that contains a delayed fluorescence material in which the difference between PBHT(Tn) and PBHT(T1) is 0.01 or greater has excellent durability. PBHT(Tn) represents the PBHT in the lowest excited triplet state of the delayed fluorescence material, and PBHT(T1) represents the PBHT in an excited triplet state having the lowest energy from among the excited triplet states having a higher energy than the lowest excited singlet energy of the delayed fluorescence material.

Inventors:

KAKIZOE HAYATO (JP)
YOSHIZAKI ASUKA (JP)

Application Number:

PCT/JP2023/007738

Publication Date:

September 07, 2023

Filing Date:

March 02, 2023

Export Citation:

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Assignee:

KYULUX INC (JP)

International Classes:

C09K11/06; H10K85/60; H10K50/12; H10K71/70; H10K101/20; H10K101/30

Domestic Patent References:

WO2022025248A1	2022-02-03
WO2021241677A1	2021-12-02

Foreign References:

CN114685355A	2022-07-01
JP2022129192A	2022-09-05
JP2023007515A	2023-01-19

Attorney, Agent or Firm:

SIKS & CO. (JP)

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