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.
Boron-nitrogen heteropolyaromatic ring compound and application thereof
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, (2020/08/29)
The invention relates to the technical field of display, in particular to a boron-nitrogen heteropolyaromatic ring compound and application thereof. The boron-nitrogen heteropolyaromatic ring compoundhas a structure as shown in a formula I, the compound is based on interaction between a boron-nitrogen structural unit and a surrounding aromatic ring or heteroaromatic ring. The boron-nitrogen heteropolyaromatic ring compound has higher glass transition temperature, higher and balanced charge mobility and more suitable single-triplet state energy, and when the boron-nitrogen heteropolyaromatic ring compound is used as a light-emitting main body material of an organic light-emitting device, the light-emitting efficiency of the device can be greatly improved, and the working voltage of the device is effectively reduced.
Adamantane-containing compound, high polymer, mixture, composition, and electronic device
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Paragraph 0241-0243; 0247; 0320-0323, (2020/02/20)
The invention discloses an adamantane-containing compound represented by general formula (1), and a high polymer, a mixture, a composition and an electronic device containing the same. Adamantane andan electron-deficient unit are connected to serve as a core unit, and then are matched with other functional units in order to effectively increase the intermolecular distance and reduce the intermolecular interaction, so the effects of reducing exciton quenching and improving the energy utilization rate are achieved, and the performances of the compound and the related device are further improved.
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.