Title:
ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/176605
Kind Code:
A1
Abstract:
Provided is a thermally activated delayed fluorescence-emitting organic electroluminescent element (organic EL element) having a high luminous efficiency at a low driving voltage and having a long life. A delayed fluorescence-emitting organic EL element characterized by comprising an anode and a cathode which face each other and one or more light-emitting layers arranged between the anode and the cathode, wherein at least one of the light-emitting layers contains a para-biphenylcarbazole compound-type host material represented by general formula (1) and an indolocarbazole compound-type thermally activated delayed fluorescence-emitting material containing an indolocarbazole ring in the molecule thereof.
Inventors:
SAGARA YUTA (JP)
TADA MASASHI (JP)
TADA MASASHI (JP)
Application Number:
PCT/JP2019/008273
Publication Date:
September 19, 2019
Filing Date:
March 04, 2019
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
H01L51/50; C09K11/06
Domestic Patent References:
| WO2017159152A1 | 2017-09-21 | |||
| WO2011070963A1 | 2011-06-16 | |||
| WO2016017760A1 | 2016-02-04 | |||
| WO2015022987A1 | 2015-02-19 |
Foreign References:
| JP2017031138A | 2017-02-09 | |||
| JP2014086427A | 2014-05-12 | |||
| JP2018170369A | 2018-11-01 | |||
| US20140197386A1 | 2014-07-17 | |||
| US20170352816A1 | 2017-12-07 |
Other References:
PHYS. REV. LETT., vol. 110, 2013, pages 247401
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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