Title:
LIGHT-EMITTING ELEMENT AND COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/065100
Kind Code:
A1
Abstract:
Provided is a light-emitting element having exceptional luminous efficiency. A light-emitting element having an anode, a cathode, and a first layer and a second layer provided between the anode and the cathode, the first layer containing at least one compound (A-1) selected from compounds T that satisfy at least one of requirement (i) and requirement (ii) and that satisfy requirement (iii), and the second layer containing at least one compound (A-2) selected from compounds T that satisfy at least one of requirement (i) and requirement (ii) and that satisfy requirement (iii), and also containing a crosslinked product of a compound having a crosslinking group. (i) The absolute value of the difference between the energy level of the lowest triplet excited state and the energy level of the lowest singlet excited state is 0.25 eV or less. (ii) The compound is represented by formula (T-1). (iii) The compound has no transition metals in the molecule.
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Inventors:
SASADA TOSHIAKI (JP)
ASANO ATSUSHI (JP)
ASANO ATSUSHI (JP)
Application Number:
PCT/JP2021/033488
Publication Date:
March 31, 2022
Filing Date:
September 13, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C07D403/04; C08G61/02; C09K11/06; H01L51/50; H05B33/12
Domestic Patent References:
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| WO2010136109A1 | 2010-12-02 | |||
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Foreign References:
| JP2018501354A | 2018-01-18 | |||
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Other References:
CHEMICAL REVIEW (CHEM. REV., vol. 109, 2009, pages 897 - 1091
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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