Title:
ORGANIC ELECTROLUMINESCENT ELEMENT AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2022/149493
Kind Code:
A1
Abstract:
The present invention provides a practically useful organic EL element which operates at a low voltage, while having a high efficiency and long service life characteristics. An organic electroluminescent element (organic EL element) which comprises one or more light emitting layers between a positive electrode and a negative electrode facing each other, and which is characterized in that at least one light emitting layer contains: a first host that is selected from among biscarbazole compounds that are represented by general formula (1), wherein at least one triphenylene group is substituted; a second host that is selected from among indolocarbazole compounds to which a nitrogen-containing six-membered ring is bonded; and a luminescent dopant material. (In the formula, each of m and n represents the number of repetitions, while satisfying (m + n) ≥ 1.)
Inventors:
OGAWA JUNYA (JP)
HAYASHI KENTARO (JP)
YOSHIDA KAZUNARI (JP)
IKENAGA YUJI (JP)
KITAHARA IKUMI (JP)
HAYASHI KENTARO (JP)
YOSHIDA KAZUNARI (JP)
IKENAGA YUJI (JP)
KITAHARA IKUMI (JP)
Application Number:
PCT/JP2021/048196
Publication Date:
July 14, 2022
Filing Date:
December 24, 2021
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
H01L51/50; C09K11/06
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Other References:
J. AM. CHEM. SOC., 2001
NATURE, vol. 492, 2012, pages 234
NATURE PHOTONICS, vol. 8, 2014, pages 326
NATURE, vol. 492, 2012, pages 234
NATURE PHOTONICS, vol. 8, 2014, pages 326
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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