Title:
ORGANIC ELECTROLUMINESCENCE ELEMENT, ELECTRONIC DEVICE, COMPOSITION, AND MIXTURE POWDER
Document Type and Number:
WIPO Patent Application WO/2023/120485
Kind Code:
A1
Abstract:
An organic EL element (1) has a light-emitting region (5) and a first positive electrode-side organic layer (61). The first positive electrode-side organic layer (61) contains a first material. The light-emitting region (5) includes a first light-emitting layer (51) containing a first host material and a second host material, and a second light-emitting layer (52) containing a third host material. The energy levels of the highest occupied molecular orbitals HOMO (HT1), HOMO (H1), and HOMO (H2) of the first material, the first host material, and the second host material satisfy the relationship of a formula (formula A1), and the triplet energies T1(H1), T1(H2), and T1(H3) of the first host material, the second host material, and the third host material satisfy the relationship of a formula (formula A2) and the relationship of a formula (formula A3). (Formula A1): HOMO (HT1)>HOMO (H2)>HOMO (H1)
(Formula A2): T1(H1)>T1(H3)
(Formula A3): T1(H2)>T1(H3)
Inventors:
TASAKI SATOMI (JP)
TOYOSHIMA HIROAKI (JP)
MASUDA TETSUYA (JP)
NAKAMURA MASATO (JP)
ITOI HIROAKI (JP)
TOYOSHIMA HIROAKI (JP)
MASUDA TETSUYA (JP)
NAKAMURA MASATO (JP)
ITOI HIROAKI (JP)
Application Number:
PCT/JP2022/046706
Publication Date:
June 29, 2023
Filing Date:
December 19, 2022
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
H10K50/11; C07D307/91; C07D311/92; C09K11/06; H10K50/15; H10K50/16; H10K59/10; H10K85/60; H10K101/30; H10K101/40
Domestic Patent References:
| WO2021210582A1 | 2021-10-21 | |||
| WO2021210305A1 | 2021-10-21 | |||
| WO2018186404A1 | 2018-10-11 | |||
| WO2021090932A1 | 2021-05-14 | |||
| WO2021256564A1 | 2021-12-23 |
Foreign References:
| JP2017175128A | 2017-09-28 | |||
| JP2019161218A | 2019-09-19 |
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
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