877615-05-9Relevant academic research and scientific papers
LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE LIGHT-EMITTING DEVICE
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Paragraph 0448; 0452-0454, (2022/01/24)
The disclosure relates to a light-emitting device including a first electrode, a second electrode facing the first electrode, and an interlayer disposed between the first electrode and the second electrode and including an emission layer. The interlayer includes a first compound represented by Formula 1 of the specification, a second compound represented by Formula 2 of the specification, and a third compound, which is a blue phosphorescent compound. The disclosure also relates to an electronic apparatus including the light-emitting device.
COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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Paragraph 0122; 0141-0145, (2021/05/18)
The present invention provides a compound represented by chemical formula and an organic light emitting device including the same.
Nitrogen-containing compound, electronic component, and electronic device
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Paragraph 0151-0153, (2021/05/19)
The invention provides a nitrogen-containing compound as shown in a chemical formula 1, an electronic component and an electronic device, and belongs to the technical field of organic materials. The nitrogen-containing compound can improve the performance of the electronic component.
Heterocyclic compound and organic light-emitting device containing the same
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Paragraph 0554-0558, (2021/11/21)
A heterocyclic compound is represented by Formula 1, and an organic light-emitting device including the same. The substituents of Formula 1 are the same as defined in the detailed description.
Compound for organic photoelectric device, organic photoelectric device, and display device
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, (2020/12/30)
Disclosed are a compound for an organic photoelectric device represented by a combination of Chemical Formula 1 and Chemical Formula 2, an organic photoelectric device including the compound, and a display device. Details of Chemical Formula 1 and Chemica
Heterocyclic Compound and Organic Light Emitting Device Comprising The Same
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Paragraph 0156-0159, (2020/10/03)
The present invention provides a heterocyclic compound represented by chemical formula 1 and an organic light emitting device including the same. It is possible to improve quantum efficiency.
HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
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Paragraph 0390-0392, (2020/06/16)
A heterocyclic compound is represented by Formula 1. An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including an emission layer, wherein the organic light-emitting device includes at least one of the heterocyclic compound.
COMPOUND FOR ORGANIC OPTOELECTRONIC DEVICE, COMPOSITION FOR ORGANIC OPTOELECTRONIC DEVICE AND ORGANIC OPTOELECTRONIC DEVICE AND DISPLAY DEVICE
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Paragraph 0311-0313, (2019/12/25)
The present invention relates to a compound represented by chemical formula 1, a composition comprising the same, an organic optoelectronic device, and a display device. In the chemical formula 1, each substituent is as defined in the specification. Accor
A ternary phosphine oxide host featuring thermally activated delayed fluorescence for blue PHOLEDs with >20% EQE and extremely low roll-offs
Li, Chenyu,Fan, Xuefeng,Han, Chunmiao,Xu, Hui
, p. 6747 - 6754 (2018/07/06)
Development of high-performance blue organic light-emitting diodes (OLEDs) is one of the main challenges because efficient host-dopant energy transfer is necessary to develop highly efficient OLEDs. In this study, an effective molecular design strategy for blue phosphorescent hosts with high triplet (T1) energy and the feature of thermally activated delayed fluorescence (TADF) has been demonstrated using a ternary donor-acceptor-acceptor (D-A-A) molecule, DCDPOTZ, in which carbazole, triazine and diphenylphosphine oxide are incorporated as donor and acceptors. DCDPOTZ achieves the typical characteristics of TADF with a high T1 energy level of 2.93 eV and a small singlet-triplet splitting of 0.27 eV, accompanied by the ambipolar property. Its host characteristics are further improved by its diphenylphosphine oxide group with large steric hindrance for suppressing intermolecular interaction-induced quenching. By adopting bis(4,6-difluorophenylpyridinato)tetrakis((1-pyrazolyl)borate)iridium(iii) (FIr6) as a dopant, DCDPOTZ successfully realizes 100% host-dopant energy transfer efficiency. As a consequence, DCDPOTZ endowed its FIr6-based devices with extremely low driving voltages, the state-of-the-art external quantum efficiency (EQE) of up to 22.7%, and 100% internal quantum efficiency. At 1000 nits, the EQE is still beyond 20%, corresponding to a roll-off as low as 11%, which is one of the lowest values reported to date for blue phosphorescent OLEDs.
Prolonging the lifetime of ultralong organic phosphorescence through dihydrogen bonding
Gu, Long,Shi, Huifang,Miao, Chunyang,Wu, Qi,Cheng, Zhichao,Cai, Suzhi,Gu, Mingxing,Ma, Chaoqun,Yao, Wei,Gao, Yaru,An, Zhongfu,Huang, Wei
supporting information, p. 226 - 233 (2018/01/17)
Developing metal-free organic phosphorescence materials with ultralong lifetimes is a long-standing concern in optoelectronics. Herein, for the first time, we report a concise chemical strategy to prolong the lifetime of ultralong organic phosphorescence (UOP) via dihydrogen bonding. On slighlty tailoring alkyl chain in their molecular structure, the phosphorescence lifetime of the as-prepared triazine derivatives increased by 25% (to 788 ms) under ambient conditions. Moreover, tunable ultralong luminescence was realized with various excitation wavelengths. Significantly, a white persistent luminescence was obtained, for the first time, when the excitation at 300 nm was switched off. Combining theoretical simulations and single crystal analysis, we conclude that the polar dihydrogen bonds of C-H?H-N in the DCzNT crystal play a critical role in increasing the lifetime of the UOP. In addition, the ultralong phosphors were successfully applied to anti-counterfeiting of a currency bill. These results can offer a new platform towards tuning the lifetime of UOP and expanding the scope of organic phosphorescence materials and their optoelectronic applications.
