- Design approach of exciplexes enhancing the singlet and triplet energy by managing electron transport type host
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A high singlet energy and triplet energy exciplex host was developed by synthesizing an electron transport type host with a controlled lowest unoccupied molecular orbital (LUMO) level and intermolecular interaction. A diphenyltriazine derived host was des
- Jeon, Sang Kyu,Yu, Ji Gwang,Song, Wook,Lee, Ha Lim,Lee, Jun Yeob
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- High triplet energy electron transport type exciton blocking materials for stable blue phosphorescent organic light-emitting diodes
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High triplet energy electron transport materials with dibenzothiophene and dibenzofuran cores modified with a diphenyltriazine unit were investigated as electron transport type exciton blocking materials for stable blue phosphorescent organic light-emitting diodes. The two exciton blocking materials showed high triplet energy above 2.80 eV and enhanced quantum efficiency of the blue phosphorescent devices by more than 40% while maintaining stability of the pristine blue devices without the high triplet energy exciton blocking layer.
- Kang, Yu Jin,Lee, Jun Yeob
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- COMPOUND FOR ORGANIC OPTOELECTRONIC DEVICE, COMPOSITION FOR ORGANIC OPTOELECTRONIC DEVICE, ORGANIC OPTOELECTRONIC DEVICE, AND DISPLAY DEVICE
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A compound for an organic optoelectronic device, a composition for an organic optoelectronic device including the same, an organic optoelectronic device, and a display device, the being represented by Chemical Formula 1:
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Paragraph 0174-0177; 0270-0273
(2020/12/13)
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- Dibenzofuran derivatives with meta- and para-triphenylamine substituents as hole-transporting materials in organic light-emitting devices
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Three novel hole-transporting materials, 3,3'-(dibenzo[b,d]furan-2,8-diyl)bis(N,N-diphenylaniline) (BF-m-TPA), 4,4'-(dibenzo[b,d]furan-2,8-diyl)bis(N,N-diphenylaniline) (BF-p-TPA) and 4,4'-(dibenzo[b,d]furan-2,6-diyl)bis(N,N-diphenylaniline) (BF-2,6-TPA), were designed and synthesized. Owing to the rigid dibenzofuran core, these BF-TPA derivatives exhibited high thermal decomposition temperatures of over 395 °C and very high LUMO energy levels. Electroluminescent (EL) devices were fabricated using these three hole-transporting materials. The best device performance was obtained for BF-m-TPA, with the maximum luminance (L) of 15,230 cd/m2, luminance efficiency (LE) of 56.5 cd/A, power efficiency (PE) of 13.3 lm/W, and external quantum efficiency (EQE) of 16.3%.
- Yun, Seong-Jae,Seo, Min Hye,Lee, Sungkoo
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- HETERO-CYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present invention relates to a heterocyclic compound represented by chemical formula 1 and an organic light emitting device having the same. According to one embodiment of the present disclosure, provided is the organic light emitting device which comprises: a first electrode; a second electrode facing the first electrode; and at least one organic material layer provided between the first electrode and the second electrode. At least one layer of the organic material layers includes the heterocyclic compound represented by the chemical formula 1.COPYRIGHT KIPO 2019
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Paragraph 0130-0132
(2019/01/24)
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- An electroluminescent compound and an electroluminescent device comprising the same
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The present invention relates to an organic light emitting compound adopted to an organic electroluminescent device. The organic light emitting compound is represented by chemical formula 1 or chemical formula 2. In the case of adopting the organic light emitting compound as a phosphorescence host compound in a hole transport functional layer or a luminous layer, an organic electroluminescent device having excellent luminous characteristics such as operating voltage, brightness, long lifespan, etc.
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Paragraph 0292-0294; 0927-0930
(2016/10/10)
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- ORGANIC COMPOUND, LIGHT-EMITTING ELEMENT, DISPLAY MODULE, LIGHTING MODULE, LIGHT-EMITTING DEVICE, DISPLAY DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
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The present invention provides a novel organic compound. In addition, provided is an organic compound which can be used as an electron transport material of a light-emitting element. In the organic compound, heteroaromatic groups including two pyridine ri
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Paragraph 0200; 0201; 0202
(2016/12/01)
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- ORGANIC COMPOUND, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE
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PROBLEM TO BE SOLVED: To provide a useful novel phosphorescence organic compound that is used as a host material in which a light-emitting substance of a light-emitting layer is dispersed in a light-emitting element using an organic electroluminescence. S
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Paragraph 0192; 0193
(2016/10/10)
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- COMPOUND COMPRISING PHENYL PYRIDINE UNITS
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Organic compounds of formula I may be used in optoelectronic devices wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical;R2 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical;a is, independently at each occurrence, an integer ranging from 0-4;b is, independently at each occurrence, an integer ranging from 0-3;Ar1 is a direct bond or heteroaryl, aryl, or alkyl or cycloalkyl;Ar2 is heteroaryl, aryl, or alkyl or cycloalkyl;c is 0, 1 or 2; andn is an integer ranging from 2-4.
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Page/Page column 34
(2009/12/05)
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- COMPOUND COMPRISING PHENYL PYRIDINE UNITS
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Organic compounds of formula I may be used in optoelectronic devices wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical;R2 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical;a is, independently at each occurrence, an integer ranging from 0-4;b is, independently at each occurrence, an integer ranging from 0-3;Ar1 is a direct bond or heteroaryl, aryl, or alkyl or cycloalkyl;Ar2 is heteroaryl, aryl, or alkyl or cycloalkyl;c is 0, 1 or 2; andn is an integer ranging from 2-4.
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