- Effect of arylamino-carbazole containing hole transport materials on the device performance and lifetime of OLED
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We synthesized four hyper-conjugated aromatic hole transporting materials with different molecular geometry and energy levels by attaching arylamino moiety attached to the carbazole core. A brominated carbazole moiety reacted with an arylamino moiety using a Buchwald-Hartwig reaction. The characteristics of these hole transporting materials were investigated using TGA, DSC, UV–Vis and luminescence spectroscopy. The energy levels of all materials used in this study were estimated from cyclic voltammograms and absorption spectra. The hole transporting properties of the synthesized molecules were measured using single-carrier devices. All four hole transporting materials showed similar hole mobility. The effectiveness of hole transporting materials was compared by fabricating green-emitting organic light emitting diode (OLED) devices. It turned out that the device performances were critically dependent on the relative energy levels of the hole transporting layer and emission layer. However, the molecular geometry greatly influenced the device lifetime, determining thermally induced crystallization by the heat produced during device operation.
- Joung, Kuk Soung,Kim, Kyu Sung,Kim, Seung Uk,Tak, So Hyun,Yu, Jae-Woong
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- Organic compound, electronic element comprising same and electronic device
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The invention relates to an organic compound, an electronic element comprising the same and an electronic device. The structural formula of the organic compound is represented by the chemical formula 1, and the organic compound is applied to an organic electroluminescent device and can significantly improve the performance of the device.
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Paragraph 0157-0159; 0163
(2022/01/10)
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- ORGANIC ELECTROLUMINESCENCE DEVICE AND MONOAMINE COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
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An organic electroluminescence device of an embodiment includes a first electrode, a second electrode on the first electrode, and an organic layer between the first electrode and the second electrode, wherein the organic layer includes a monoamine compoun
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Paragraph 0125-0126
(2020/10/10)
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- Novel compound for capping layer and organic light emitting device including same
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The present invention relates to a novel compound for a capping layer and an organic light emitting device including the same. The compound according to an embodiment of the present invention is a compound in which carbazole is boned to one side of amine
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Paragraph 0151-0153
(2020/04/17)
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- ARYLATION METHOD
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The present invention relates to a selective method for carrying out the Buchwald-Hartwig coupling of biphenyl derivatives.
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Paragraph 0137-0142; 0143-0144; 0155-0156
(2020/02/14)
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- ORGANIC COMPOUND AND LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE USING THE SAME
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The present invention relates to an organic compound in which at least one amine group is directly or indirectly linked to an imidazopyridine core. The organic compound of the present invention has an imidazopyridine core and an amine group, and thus is excellent in hole transporting properties and hole injection properties. Therefore, when the organic compound of the present invention is used for a hole layer, an electron blocking layer and/or a charge generation layer of a light emitting device, the device can be driven at a low voltage. A sufficient current density can be ensured even at the low voltage to realize good luminous efficiency, so that stress on the compound forming the light emitting device is reduced by high voltage driving.(110) First electrode(120) Second electrodeCOPYRIGHT KIPO 2018
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Paragraph 0156; 0163-0165
(2018/07/06)
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- ORGANIC COMPOUND AND LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE USING THE SAME
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The present invention relates to an organic compound in which a nitrogen atom substituted with at least one condensed aromatic ring to an imidazo benzothiazole core. The organic compound of the present invention comprises: an imidazo benzothiazole core ha
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Paragraph 0165-0168
(2018/06/13)
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- ORGANIC COMPOUND, AND ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME
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The present invention provides an organic compound for an organic light emitting diode. The organic compound is represented by: The organic compound is capable of reducing a driving voltage of an organic light emitting diode by an excellent charge transporting property. The present invention also provides an organic light emitting diode and an organic light emitting display device including the organic compound.
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Paragraph 0198; 0199; 0200
(2018/04/18)
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- Compositions with triarylamine derivatives and oled device containing the same
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The present disclosure provides a composition. In an embodiment, a composition is provided and comprises a Compound 1 shown below: For Compound 1, R1 through R24 are the same or different. R1 through R24 each is independently selected from the group consisting of hydrogen, unsubstituted hydrocarbyl, substituted hydrocarbyl, cyano, alkoxy, aryloxy, and NR'2. R' is hydrogen or hydrocarbyl; wherein two or more of adjacent R1 to R24 may optionally form one or more ring structures. The Component Z is selected from the group consisting Group Z-1, Group Z-2, Group Z-3, Group Z-4, Group Z-5, Group Z-6 and Group Z-7 shown below: For Compound 1, one or more hydrogen atoms may optionally be substituted with deuterium.
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- Organic light-emitting device, and flat panel display device including the same
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Provided are an organic light emitting device and a flat panel display device including the same. The organic light emitting device comprises: a first electrode, a second electrode facing the first electrode, and an organic layer between the first electrode and the second electrode, wherein the organic layer comprises an emission layer; and the organic layer comprises a compound represented by Formula 1 (As shown in the description).
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Paragraph 0395; 0399; 0400; 0401
(2017/08/02)
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- COMPOSITIONS WITH 2, 3-DISUBSTITUTED INDOLES AS CHARGE TRANSPORT MATERIALS, AND DISPLAY DEVICES FABRICATED THEREFROM
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Provided is a composition comprising a compound selected from Structure 1, as described herein:
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- Selective Monoarylation of Primary Anilines Catalyzed by Pd(dippf) and its Application in OLED Component Synthesis
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Palladium 1,1′-bis(diisopropylphosphino)-ferrocene [Pd(dippf)] complexes were found to promote the monoarylation of primary anilines with unprecedented selectivities. They also allow the sequential arylation of primary anilines with two different aryl bromides in one pot. The reactions can be performed at low catalyst loadings (0.2 mol%) and high substrate concentrations. The synthetic utility of the optimum catalyst was demonstrated by the synthesis of various di- and triarylamines. A particular focus was set on compounds with carbazole and fluorene moieties as employed in state-of-the-art small-molecule organic light emitting diodes (OLEDs). (Figure presented.).
- Grünberg, Matthias F.,Jia, Fan,Rivas-Nass, Andreas,Goo?en, Lukas J.
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supporting information
p. 1589 - 1594
(2016/10/13)
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- Compound and organic light emitting device comprising same
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Disclosed are a compound represented by chemical formula 1 and an organic light emitting device comprising the same. Descriptions about substituent groups in chemical formula 1 refer to the detailed description of the present invention.COPYRIGHT KIPO
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Paragraph 0321; 0322; 0325; 0326; 0337-0340
(2016/10/10)
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- MONOARYLATION OF AROMATIC AMINES
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The present invention relates to a selective process for performing the Hartwig-Buchwald coupling of biphenyl derivatives.
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Paragraph 0096-0099; 0100; 0101; 0102; 0113; 0114
(2016/09/26)
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- MATERIALS FOR ELECTRONIC DEVICES
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The present invention relates to a compound of a formula (I), in which an electron-deficient group and an arylamino group are connected to one another via an intermediate group. The compound of the formula (I) is suitable as functional material in electronic devices.
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Paragraph 0155; 0156; 0159
(2016/10/31)
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- Compound and organic light emitting device comprising same
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Disclosed are a compound and an organic light emitting device including the same. The compound is represented by the chemical formula 1 below, wherein A refers to O or S; Ar_1 to Ar_4 refer to a substituted or unsubstituted aryl group, hetero-aryl group, or condensed multi-substituent; R_1 and R_2 refer to a substituted or unsubstituted alkyl group, aryl group, hetero-aryl group, or condensed multi-substituent; X and Y individually refer to a substituted or unsubstituted arylene group, hetero-arylene group, or condensed multi-substituent; and m and n individually refer to an integer of zero or one (excluding the case when both m and n refer to zero). For a description of the chemical formula 1, refer to the following detailed description of the invention.(AA) Second electrode(BB) Electron injection layer(CC) Electron transporting layer(DD) Light emitting layer(EE) Positive hole transporting layer(FF) Positive hole injection layer(GG) First electrodeCOPYRIGHT KIPO 2015
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Paragraph 0231; 0286; 0289; 0290
(2016/11/02)
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- CARBAZOLE DERIVATIVE, AND LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC DEVICE USING CARBAZOLE DERIVATIVE
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To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independenly 0 or 1.
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Page/Page column 262-263
(2009/07/17)
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