Title:
ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2022/124366
Kind Code:
A1
Abstract:
The present invention provides an organic electroluminescent element (organic EL element) which is driven at a low voltage, while having high efficiency and long service life characteristics. This organic EL element comprises a light emitting layer between a positive electrode and a negative electrode, which face each other, and is characterized in that the light emitting layer contains a first host that is selected from among indolocarbazole compounds having a triphenylene ring-containing group that is directly or indirectly substituted at the N-position of an indolocarbazole ring, a second host that is selected from among biscarbazole compounds having a structure wherein two carbazole rings are connected at a carbon position, and a luminescent dopant material.
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/JP2021/045320
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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