Title:
ORGANIC ELECTROLUMINESCENT ELEMENT, COMPOUND, MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/122118
Kind Code:
A1
Abstract:
Provided is an organic EL element that comprises a positive electrode, a negative electrode, and a light emitting layer between the positive electrode and the negative electrode, wherein the light emitting layer includes a delayed fluorescent compound M2 and a compound M3 represented by general formula (100), and the singlet energy S1 of the compound M2 (M2) and the singlet energy S1 of the compound M3 (M3) satisfy the relationship of the formula (formula 1). In general formula (100), X1 is an oxygen atom or a sulfur atom, C1 is a carbon atom, R11 to R18, R2, R31, R32, R34, R35, R4, and R45 to R48 are each independently a hydrogen atom, a substituent, or the like, n is 1, 2, or 3, provided that when L1 is a single bond, n is 1, k is 1, 2, or 3, m is 2, 3, or 4, k+m=5, and L1 is a single bond or a linking group. (Formula 1) S1(M3)>S1(M2)
Inventors:
SHIOMI TAKUSHI (JP)
NAKANO HIROMI (JP)
NAKANO HIROMI (JP)
Application Number:
PCT/JP2019/048468
Publication Date:
June 18, 2020
Filing Date:
December 11, 2019
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C07D405/10; C07D405/14; C07D409/10; C07D491/048; C07D495/04; C09K11/06; H01L51/50
Domestic Patent References:
| WO2019191665A1 | 2019-10-03 | |||
| WO2009008099A1 | 2009-01-15 |
Foreign References:
| US20170369439A1 | 2017-12-28 | |||
| KR20150077219A | 2015-07-07 | |||
| KR20160027940A | 2016-03-10 | |||
| CN109232382A | 2019-01-18 | |||
| KR20190078117A | 2019-07-04 | |||
| US20170062718A1 | 2017-03-02 |
Other References:
"Yuki Hando-tai no Debaisu Bussei (Device Physics of Organic Semiconductors", 1 April 2012, KODANSHA, pages: 261 - 268
HAJIME NAKANOTANI ET AL.: "High-efficiency organic light-emitting diodes with fluorescent emitters", NATURE COMMUNICATIONS, vol. 5, 2014, pages 4016, XP055560358, DOI: 10.1038/ncomms5016
NATURE, vol. 492, 2012, pages 234 - 238
MORRIS ET AL., J. PHYS. CHEM., vol. 80, 1976, pages 969
See also references of EP 3896070A4
HAJIME NAKANOTANI ET AL.: "High-efficiency organic light-emitting diodes with fluorescent emitters", NATURE COMMUNICATIONS, vol. 5, 2014, pages 4016, XP055560358, DOI: 10.1038/ncomms5016
NATURE, vol. 492, 2012, pages 234 - 238
MORRIS ET AL., J. PHYS. CHEM., vol. 80, 1976, pages 969
See also references of EP 3896070A4
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
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