Title:
有機エレクトロルミネッセン素子及びその製造方法
Document Type and Number:
Japanese Patent JP6581585
Kind Code:
B2
Abstract:
The present invention discloses an organic electroluminescent device and a manufacturing method thereof. The host material of the light-emitting layer of the organic electroluminescent device is material in which the triplet state energy level of the CT excited state is higher than that of the n-À excited state by 0 to 0.3 eV; or the triplet state of the host material of the light-emitting layer is higher than that of the n-À excited state by more than 1.0 eV; in addition, the difference in energy level between the second triplet state of the n-À state and the first singlet state of the CT excited state is -0.1 to 0.1 eV; and the luminescent dye is a fluorescent dye. With regard to the organic electroluminescent device in the present invention, as new host material in the light-emitting layer is used and the host material has a donor group and an acceptor group, the triplet state in the light-emitting layer may be fully utilized to achieve a 100% light-emitting efficiency in the fluorescent device. Furthermore, no noble metal is required to be used, thus reducing the cost.
Inventors:
Courage
Terraced
Zhang East
Kunitei Zhang
Terraced
Zhang East
Kunitei Zhang
Application Number:
JP2016539984A
Publication Date:
September 25, 2019
Filing Date:
December 16, 2014
Export Citation:
Assignee:
Beijing Weihai Technology Co., Ltd.
TSINGHUA UNIVERSITY
TSINGHUA UNIVERSITY
International Classes:
H01L51/50; C07C255/58; C07C317/36; C09B23/00; C09K11/06; H05B33/10
Domestic Patent References:
| JP2007027620A | ||||
| JP2011026289A | ||||
| JP2013028597A | ||||
| JP2016066631A | ||||
| JP2015179809A |
Foreign References:
| WO2014157619A1 | ||||
| WO2013161437A1 | ||||
| WO2011148909A1 | ||||
| WO2008143791A1 | ||||
| WO2012133188A1 | ||||
| WO2012157211A1 | ||||
| WO2011048821A1 |
Other References:
Tony C. Wu, et al.,Solid state photon upconversion utilizing thermally activated delayed fluorescence molecules as triplet sensitizer,Applied Physics Letters,2015年,107,031103,1-4
Attorney, Agent or Firm:
Nichimine International Patent Office