Title:
ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC EL DISPLAY DEVICE, ORGANIC EL LIGHTING, AND METHOD FOR PRODUCING ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2024/048691
Kind Code:
A1
Abstract:
The present invention relates to an organic electroluminescent element which comprises a positive electrode, a negative electrode, a light emitting layer and a hole injection layer, wherein: the light emitting layer is arranged between the positive electrode and the negative electrode; the hole injection layer is arranged between the positive electrode and the light emitting layer; the light emitting layer contains a polycyclic heterocyclic compound that is represented by formula (1) and a specific organometallic compound; the polycyclic heterocyclic compound and the organometallic compound satisfy relational expression (E-1); and the hole injection layer contains tetraarylborate ions. Formula (E-1): T1A ≥ T1B
(In formula (E-1), T1A represents the triplet energy level (eV) of the organometallic compound; and T1B represents the triplet energy level (eV) of the polycyclic heterocyclic compound.) (The definition of each structural group in formula (1) is as described in the description.)
Inventors:
NAGAYAMA KAZUHIRO (JP)
OKABE KAZUKI (JP)
HASEGAWA TSUKASA (JP)
IIDA KOICHIRO (JP)
OKABE KAZUKI (JP)
HASEGAWA TSUKASA (JP)
IIDA KOICHIRO (JP)
Application Number:
PCT/JP2023/031649
Publication Date:
March 07, 2024
Filing Date:
August 30, 2023
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
H10K85/30; C09K11/06; H10K50/12; H10K71/12; H10K85/10; H10K85/60; H10K101/30; H10K101/40
Domestic Patent References:
| WO2022071542A1 | 2022-04-07 | |||
| WO2023140130A1 | 2023-07-27 |
Foreign References:
| CN113540371A | 2021-10-22 | |||
| CN115703802A | 2023-02-17 | |||
| US20200388770A1 | 2020-12-10 |
Other References:
WANG YINUO, ZHANG KAIYUAN, CHEN FAN, WANG XINGDONG, YANG QINGQING, WANG SHUMENG, SHAO SHIYANG, WANG LIXIANG: "Tridecacyclic Aromatic Emitters with Multiple Resonance Effect for Narrowband Red Emission †", CHINESE JOURNAL OF CHEMISTRY, ZHONGGUO KEXUEYUAN, CN, vol. 40, no. 22, 15 November 2022 (2022-11-15), CN , pages 2671 - 2677, XP093143471, ISSN: 1001-604X, DOI: 10.1002/cjoc.202200356
Attorney, Agent or Firm:
EIKOH, P.C. (JP)
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