- Dibenzothiophene-indolocarbazole-based bipolar material: Host for green phosphorescent OLEDs and non-doped fluorescent emitter
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Novel bipolar material 2-(5-phenylindolo[3,2-a]carbazol-12(5H)-yl)dibenzothiophene 5,5-dioxide (DBTO-IN/CAR) was designed and synthesized with a high yield of 64%. The synthesized material exhibited an excellent glass transition temperature of 156 °C, which manifests as a high thermal stability of DBTO-IN/CAR. We fabricated two different devices, namely a green phosphorescent OLED and a non-doped bipolar fluorescent emitter, with DBTO-IN/CAR as the bipolar material. The DBTO-IN/CAR host material based device exhibited excellent maximum power and current efficiencies of 45.36 lm/W and 51.98 cd/A, respectively. The efficiencies are higher than that of the reference CBP-based similar device, which exhibited a power efficiency of 42.01 lm/W. The DBTO-IN/CAR-based green phosphorescent device revealed a good external quantum efficiency of 19.03%. Moreover, the non-doped DBTO-IN/CAR fluorescent emitter related device also exhibited better current and external quantum efficiencies of 4.30 cd/A and 2.47%, respectively, with the emission of cyan color.
- Braveenth, Ramanaskanda,Bae, Il-Ji,Raagulan, Kanthasamy,Kim, Sohyeon,Kim, Sunghoon,Kim, Miyoung,Chai, Kyu Yun
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- Phosphorescent host material and application thereof
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The present invention discloses a phosphorescent host material, the phosphorescent host material at least comprises an electron transport (N-type) host material H1 and a hole transport (P-type) host material H2, and H1 and H2 are respectively selected fro
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Paragraph 0200-0204; 0206; 0296-0299
(2021/04/21)
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- Functional material based on stable chemical structure
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The invention relates to functional materials based on stable chemical structures. A series of novel donor - acceptor type TADF activated emitters have been designed, which are intended to develop stable OLED. with enhanced operational stability and improved color purity that can be used in full color displays and lighting applications.
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Paragraph 0291; 0298; 0300
(2021/08/25)
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- COMPOUND FOR ORGANIC ELECTRIC ELEMENT AND ORGANIC ELECTRIC DEVICE COMPRISING THE SAME
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The present invention relates to a compound for an organic electronic element and an organic electronic element using the same. To the present invention, an organic electronic element having high luminous efficiency, low driving voltage, and high heat resistance can be provided and the color purity and lifetime of the organic electronic element can be improved. (by machine translation)
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Paragraph 0363-0367; 0371-0375
(2020/11/28)
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- Deuterated organic compounds for organic light-emitting diode and organic light-emitting diode including the same
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The present invention relates to an organic electroluminescent compound represented by chemical formula A and an organic light emitting device comprising the same. Substituents Y, Ar2 , L3 , K, p and x are as defined in the description of the invention. [Chemical A] (by machine translation)
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Paragraph 0900-0905
(2020/12/15)
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- Boron-containing organic electroluminescent material and application thereof in organic electroluminescent device
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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
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Paragraph 0084-0085; 0109-0112
(2020/06/20)
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- COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
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To an embodiment of 1 the present invention, 1 since, the 2 organic material layer includes 1 the compound represented 2 by the formula, the, organic material layer of the organic. material layer, 1 and the organic material, layer, the organic material layer may be formed of the compound represented by the general formula in the organic material layer, and the organic material layer may. be formed of the compound represented by the general formula (I). (by machine translation)
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Paragraph 0116-0118
(2020/01/28)
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- PHOSPHOROUS HOST MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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The present invention relates to phosphorous host materials and an organic electroluminescent device comprising the same. By using the phosphorous host material of the present invention, an organic electroluminescent device having significantly improved o
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Paragraph 240-241
(2016/12/12)
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- NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device containing the same. Since the organic electroluminescent compounds according to the present invention have high efficiency in transporting electrons, crystallization may be prevented when manufacturing a device. Further, the compounds have good layer formability and improve the current characteristics of the device. Therefore, they can produce an organic electroluminescent device having lowered driving voltages and enhanced power efficiency.
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Paragraph 108; 112; 113
(2013/03/28)
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