1246308-85-9Relevant articles and documents
Carbazolo-aromatic ring thermal activation delayed fluorescence material and organic electroluminescent device thereof
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, (2020/10/04)
The invention discloses a carbazolo-aromatic ring thermal activation delayed fluorescence material and an organic electroluminescent device. The structural formula of the carbazolo-aromatic ring thermal activation delayed fluorescent material is shown in the specification. The carbazolo-aromatic ring thermal activation delayed fluorescent material provided by the invention takes a carbazolo-aromatic ring as a core; due to the large volume and rigidity, molecules have a steric hindrance effect, intramolecular distortion is realized, and electron clouds of the highest occupied orbit and the lowest empty orbit of the molecules can be relatively separated to obtain a quite small single triplet state energy level difference, so that light-emitting molecules with a thermal activation delayed fluorescence property are designed and prepared; the thermal performance, the light-emitting efficiency and the light color of the material can be adjusted, and the material can be used as a guest material, can also be used as a host material by utilizing the thermal activation delayed fluorescence property, and can be constructed through molecular design.
Dibenzothiophene dioxide-benzofuro carbazole based bipolar host material for yellow and red phosphorescent OLEDs
Bae, Il-Ji,Braveenth, Ramanaskanda,Chai, Kyu Yun,Choi, Seung Yu,Jang, Hee Jung,Kim, Bo Mi,Kim, Miyoung,Oh, Su Bin,Park, Young Hee,Raagulan, Kanthasamy,Wu, Qiong
, (2020/08/03)
2-(12H-benzofuro[3,2-a]carbazol-12-yl)dibenzo[b,d]thiophene 5,5-dioxide (DBT-INFUR) is a bipolar host material for yellow and red phosphorescent OLEDs. DBT-INFUR was designed and synthesized between dibenzothiphene acceptor and benzofuro carbazole donor with a yield of 60percent. We constructed two different devices, namely a yellow and a red phosphorescent OLEDs, and we compared the device properties with reference 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP). DBT-INFUR based yellow phosphorescent OLED device exhibited maximum current and external quantum efficiencies of 41.07 cd/A and 16.5percent, respectively and which is better than that of reference CBP based similar device (27.66 cd A, 10.15percent). DBT-INFUR based red phosphorescent OLED (12.44percent) revealed higher efficiencies when compared to the reference (7.64percent) device. The bipolar DBT-INFUR showed excellent host properties with yellow and red phosphorescent devices.
Molecular Engineering of Isomeric Benzofurocarbazole Donors for Photophysical Management of Thermally Activated Delayed Fluorescence Emitters
Jung, Mina,Lee, Jun Yeob,Lee, Kyung Hyung
, (2020/03/30)
Benzofurocarbazole moieties are commonly used donor structures in the design of thermally activated delayed fluorescence (TADF) emitters. However, only 5 H-benzofuro[3,2-c]carbazole (34BFCz) has been reported and, to the best of our knowledge, no other be
Boron-containing organic electroluminescent material and application thereof in organic electroluminescent device
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, (2020/06/20)
The invention discloses a boron-containing organic electroluminescent material and application thereof in an organic electroluminescent device, the compound comprises boron groups, and the compound has strong group rigidity, and has the characteristics of
Compound taking cycloheptene as core and application of compound on organic light-emitting devices
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, (2020/01/14)
The invention discloses a compound taking cycloheptene as a core and an application of the compound on organic light-emitting devices. The compound has strong rigidity due to the cycloheptene structure, and after the compound is connected with a carbazole
COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
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Paragraph 0164; 0305; 0316-0318; 0324-0326; 0353; 0361-0362, (2020/05/23)
The present invention provides: a novel mixture capable of improving luminous efficiency, stability, and lifespan of an element; an organic electronic element using the same; and an electronic device thereof. By using the mixture according to the present invention as a phosphorescent host material, it is possible to achieve high luminous efficiency and low driving voltage of the organic electronic element, and also significantly improve a lifespan of the element.(110) Substrate(120) Anode(130) Hole injection layer(140) Hole transfer layer(141) Buffer layer(150) Auxiliary light emitting layer(151) Light emitting layer(160) Electron transfer layer(170) Electron injection layer(180) CathodeCOPYRIGHT KIPO 2020
COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
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Paragraph 0206; 0322; 0328; 0329; 0349; 0350; 0354-0355, (2020/05/26)
The present invention provides: a novel mixture capable of improving luminous efficiency, stability, and lifespan of an element; an organic electronic element which uses the same; and an electronic device thereof. By using the mixture according to the present invention as a phosphorescent host material, it is possible to achieve high luminous efficiency and low driving voltage of the organic electronic element, and also significantly improve a lifespan of the element.(110) Substrate(120) Anode(130) Hole injection layer(140) Hole transport layer(141) Buffer layer(150) Light emitting auxiliary layer(151) Light emitting layer(160) Electron transport layer(170) Electron injection layer(180) CathodeCOPYRIGHT KIPO 2020
COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
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Paragraph 0217; 0326; 0335; 0341-0342; 0363; 0369-0370, (2020/05/28)
The present invention provides: a novel mixture capable of improving luminous efficiency, stability, and lifespan of an element; an organic electronic element using the same; and an electronic device thereof. By using the mixture according to the present
COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
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Paragraph 0225; 0324; 0332-0334; 0338-0339; 0357-0359; 0363, (2020/06/02)
The present invention provides: a novel mixture capable of improving luminous efficiency, stability, and lifespan of an element; an organic electronic element using the same; and an electronic device thereof. By using the mixture according to the present
Organic electroluminescent compounds, and preparation method and application thereof
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Paragraph 0147-0148; 0150; 0163-0164; 0166, (2020/09/09)
The invention provides organic electroluminescent compounds, and a preparation method and application thereof. The organic electroluminescent compounds have a structure as shown in a formula I which is described in the specification. An organic light-emitting device comprises a substrate, a first electrode, a second electrode and at least one organic layer inserted between the first electrode andthe second electrode, wherein the organic layer contains any one or a combination of at least two selected from the organic electroluminescent compounds. The organic electroluminescent compounds haverelatively high luminous efficiency and relatively long service life.