Title:
ORGANIC ELECTROLUMINESCENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/124365
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a practically useful organic EL device having low voltage, high efficiency, and long service life characteristics. The organic electroluminescent device including a light-emitting layer between a positive electrode and a negative electrode facing each other, wherein the light-emitting layer contains: a first host selected from compounds represented by general formula (1); a second host selected from compounds represented by general formula (2); and a luminescent dopant material. [Formula 1] in general formula (1), a ring A is an aromatic ring represented by formula (1a), a ring B is a heterocycle represented by formula (1b), Tp is a triphenylene group, L is an aromatic hydrocarbon group having 6-18 carbon atoms, and X is N or C-H. In general formula (2), a ring C represents an aromatic ring represented by formula (2a), and a ring D represents a heterocycle represented by formula (2b).
Inventors:
KITAHARA IKUMI (JP)
HAYASHI KENTARO (JP)
OGAWA JUNYA (JP)
UEDA TOKIKO (JP)
HAYASHI KENTARO (JP)
OGAWA JUNYA (JP)
UEDA TOKIKO (JP)
Application Number:
PCT/JP2021/045319
Publication Date:
June 16, 2022
Filing Date:
December 09, 2021
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
H01L51/50; C07D487/04; C09K11/06; H05B33/10
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NATURE PHOTONICS, vol. 8, 2014, pages 326
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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