1060735-14-9Relevant articles and documents
Efficient blue/white phosphorescent organic light-emitting diodes based on a silicon-based host material via a direct carbon-nitrogen bond
Xie, Yue-Min,Cui, Lin-Song,Liu, Yuan,Zu, Feng-Shuo,Li, Qian,Jiang, Zuo-Quan,Liao, Liang-Sheng
, p. 5347 - 5353 (2015)
A new host material BCz-Si for blue and white phosphorescent organic light-emitting devices was designed and synthesized. The introduction of the triphenylsilyl moiety into the BCz unit can efficiently tune the HOMO/LUMO energy levels and maintain high triplet energy. Its carrier mobility, thermal, photophysical, and electrochemical properties were also systematically investigated. The high triplet energy of BCz-Si ensures efficient energy transfer from the host to the triplet emitter FIrpic. The blue device using BCz-Si as a host material achieved a maximum quantum efficiency of 21.0%, corresponding to a current efficiency and power efficiency as high as 46.5 cd A-1 and 45.8 lm W-1, respectively; meanwhile, high efficiency white phosphorescent OLEDs hosted by BCz-Si were also fabricated with a maximum external quantum efficiency of 24.6%, 70.5 cd A-1 for two-color based and 21.5%, 50.1 cd A-1 for three color based devices. This journal is
Blue thermally activated delayed fluorescent emitters having a bicarbazole donor moiety
Kim, Hyeong Min,Choi, Jeong Min,Lee, Jun Yeob
, p. 64133 - 64139 (2016)
Bis(4-(9′-phenyl-9H,9′H-[3,3′-bicarbazol]-9-yl)phenyl)methanone (BPBCz) and 9′,9′′′-((6-phenyl-1,3,5-triazine-2,4-diyl)bis(4,1-phenylene))bis(9-phenyl-9H,9′H-3,3′-bicarbazole) (TrzBCz) were investigated as thermally activated delayed fluorescent (TADF) emitters to exhibit blue emission color. A 3,3′-bicarbazole was a donor in the two TADF emitters, and benzophenone and triazine were acceptors of BPBCz and TrzBCz, respectively. Both BPBCz and TrzBCz behaved as high efficiency TADF emitters through a small singlet-triplet energy gap for the activation of delayed fluorescence. The BPBCz and TrzBCz TADF emitters offered high quantum efficiencies of 23.3% and 23.6% in the blue TADF devices.
Organic compound and application thereof, and organic electroluminescent device
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Paragraph 0112-0114, (2020/02/14)
The invention relates to the field of organic electroluminescent devices, and discloses an organic compound and an application thereof, and an organic electroluminescent device; the compound has a structure represented by a formula (I) or a formula (II). According to the organic compound provided by the invention, the HOMO energy level and LUMO energy level of the organic electroluminescent material can be regulated and controlled, and meanwhile, the organic electroluminescent material containing the organic compound has relatively high hole mobility rate and electron mobility rate, so that the luminous efficiency is improved.
Novel compound and organic light emitting device comprising the same
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Paragraph 0148-0153, (2020/02/28)
The present invention provides a novel compound and an organic light emitting device using the same. The compound represented by the chemical formula 1 can be used as a material of an organic material layer of the organic light emitting device, and can improve efficiency, low driving voltage, and/or lifespan characteristics in the organic light emitting device.COPYRIGHT KIPO 2020
COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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Paragraph 0186-0188, (2020/05/01)
The present specification provides a compound of chemical formula 1 and an organic light emitting device comprising the same. The compound according to an embodiment of the present application is used in the organic light emitting device to increase the brightness, increase lifespan, lower driving voltage, and improve light efficiency of the organic light emitting device, and also to improve lifespan characteristics of the device.COPYRIGHT KIPO 2020