Invention Grant
- Patent Title: Organic electroluminescent device
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Application No.: US14911761Application Date: 2014-08-13
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Publication No.: US10658596B2Publication Date: 2020-05-19
- Inventor: Hajime Nakanotani , Chihaya Adachi , Takahiro Higuchi , Taro Furukawa
- Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
- Applicant Address: JP Fukuoka
- Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
- Current Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
- Current Assignee Address: JP Fukuoka
- Agency: Browdy and Neimark, PLLC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@308046db com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@55ce70be
- International Application: PCT/JP2014/071373 WO 20140813
- International Announcement: WO2015/022974 WO 20150219
- Main IPC: H01L51/00
- IPC: H01L51/00 ; H01L51/50 ; C09K11/06

Abstract:
An organic electroluminescent device having an anode, a cathode, and a light emitting layer between the anode and the cathode, in which the light emitting layer contains a first organic compound, a second organic compound, and a third organic compound that satisfy the following expression (A), the second organic compound is a delayed fluorescent material, and the third organic compound is a light emitting material, is capable of enhancing the light emission efficiency. ES1(A), ES1(B) and ES1(C) represent a lowest singlet excitation energy level of the first, second and third organic compound, respectively. ES1(A)>ES1(B)>ES1(C) (A)
Public/Granted literature
- US10862047B2 Organic electroluminescent device Public/Granted day:2020-12-08
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