Invention Grant
- Patent Title: Highly efficient OLED devices with very short decay times
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Application No.: US15105947Application Date: 2014-12-17
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Publication No.: US10347851B2Publication Date: 2019-07-09
- Inventor: Christian Lennartz , Stefan Metz , Korinna Dormann , Gerhard Wagenblast , Ute Heinemeyer , Hannah Mangold , Minlu Zhang , Thomas-Wesley Holcombe
- Applicant: UDC Ireland Limited
- Applicant Address: IE Dublin
- Assignee: UDC Ireland Limited
- Current Assignee: UDC Ireland Limited
- Current Assignee Address: IE Dublin
- Agency: Riverside Law LLP
- Priority: EP13198990 20131220
- International Application: PCT/EP2014/078342 WO 20141217
- International Announcement: WO2015/091716 WO 20150625
- Main IPC: H01L51/00
- IPC: H01L51/00 ; H01L51/50 ; C09K11/06 ; C09K11/02
Abstract:
The present invention relates to organic light-emitting devices comprising (a) an anode, (i) a cathode, and (e) an emitting layer between the anode and cathode, comprising 2 to 40% by weight of a luminescent organometallic complex X having a difference of the singlet energy (ES1(X)) and the triplet energy (ET1(X)) of smaller than 0.2 eV [Δ (ES1(X))−(ET1(X)) ES1(Y)]. By doping, for example, an emitting layer containing a luminescent organometallic complex having a small S1-T1 splitting, with a fluorescent emitter the emission decay time can significantly be shortened without sacrificing external quantum efficiency (EQE) because of very efficient energy transfer.
Public/Granted literature
- US20160315274A1 HIGHLY EFFICIENT OLED DEVICES WITH VERY SHORT DECAY TIMES Public/Granted day:2016-10-27
Information query
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