- Efficient organic light-emitting diodes based on iridium(iii) complexes containing indolo[3,2,1-jk]carbazole derivatives with narrow emission bandwidths and low efficiency roll-offs
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In this work, two cyclometalated ligands 2-(pyridin-2-yl)indolo[3,2,1-jk]carbazole (pyidcz) and 2-(4-(trifluoromethyl)pyridin-2-yl)indolo[3,2,1-jk]carbazole (tfpyidcz) containing an indolo[3,2,1-jk]carbazole unit were synthesized for achieving highly efficient iridium(iii) complexes (pyidcz)2Ir(tmd) and (tfpyidcz)2Ir(tmd) (tmd = 2,2,6,6-tetramethyl-3,5-heptanedione). The two Ir(iii) complexes exhibit emissions peaking at 499 and 554 nm, respectively, with narrow full width at half maximum (FWHM) values of 35 and 53 nm, respectively, short phosphorescence lifetimes less than 1 μs and high photoluminescence quantum yields of up to 90% in CH2Cl2solution. The organic light-emitting diodes (OLEDs) with (pyidcz)2Ir(tmd) and (tfpyidcz)2Ir(tmd) emitters show good performances. The (pyidcz)2Ir(tmd)-based device shows a turn-on voltage (Von) of 3.6 V with a maximum brightness (Lmax) of 39123 cd m?2, a maximum current efficiency (ηc,max) of 69.2 cd A?1, a maximum power efficiency (ηp,max) of 36.8 lm W?1and a maximum external quantum efficiency (EQEmax) of 21.2%. In particular, the FWHM bandwidth of the electroluminescence spectrum is only 33 nm, which was rarely reported for Ir(iii) complex-based OLEDs. The performance of the (tfpyidcz)2Ir(tmd)-based device is slightly better with aVonof 3.3 V, aLmaxof 31714 cd m?2, aηc,maxof 78.4 cd A?1, aηp,maxof 54.7 lm W?1and an EQEmaxof 24.0%. Furthermore, the efficiency roll-offs of both devices are small, and theηcvalues at 10?000 cd m?2brightness are still maintained at 60.0 and 71.4 cd A?1, respectively, which provide a powerful reference for developing indolo[3,2,1-jk]carbazole-based Ir(iii) complexes for efficient OLEDs.
- Liao, Xiang-Ji,Lu, Jun-Jian,Luo, Xu-Feng,Yan, Zhi-Ping,Yuan, Li,Zhang, Yi-Pin,Zheng, You-Xuan,Zhu, Jin-Jun
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- Composition For Capping Layer of Organic Light Emitting Diode and Organic Light Emitting Diode Having The Same
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The present invention relates to an organic electroluminescent device, and more particularly, to an indolocarbazole derivative compound used as a material for a capping layer (CPL) of the organic electroluminescent device. More specifically, the present invention relates to an indolocarbazole derivative compound having an amine substituent, a composition for the CPL of the organic electroluminescent device comprising the same, and the organic electroluminescent device comprising the same.
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- Impact of the donor structure in new D-π-A systems based on indolo[3,2,1-jk]carbazoles on their thermal, electrochemical, optoelectronic and luminescence properties
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In this work, novel fluorophores with D-π-A architectures (ICz-1-ICz-6) were synthesized and investigated, where the indolo[3,2,1-jk]carbazole (ICz) framework is connected by an ethylene bridge with extensive donor moieties -e.g., fluorene, carbazole, phenothiazine, methoxyphenyl, bithiophene, and dibenzothiophene. The influences of the donor character of the substituents in the indolocarbazole derivatives on their thermal, optical and electrochemical properties were explored and compared with the quantum chemical calculations based on DFT and TD-DFT. AllICz-1-ICz-6compounds emit blue light with emission peaks between 390 and 430 nm in solution, except for compoundICz-5with a strong phenothiazine donor, which emits light at 463 nm. TheICz-6derivative with the dibenzothiophene unit features an exception to Kasha's rule. For the selected compoundsICz-2,ICz-4, andICz-5, preliminary electroluminescence tests were performed, both based on devices with a neat compound (ITO/PEDOT:PSS/ICz/Al) and with a guest-host configuration (ITO/PEDOT:PSS/PVK:PBD:ICz/Al), where two emission bands were detected covering the range from 400 to over 900 nm. Additionally, several multilayer OLED devices (ITO/PEDOT:PSS/poly-TPD/ICz-2-5/TPBi/LiF/Al) were prepared, and all diodes showed electroluminescence at 570 nm.
- Goriachiy, Dmitry,Ma?kowski, Sebastian,Schab-Balcerzak, Ewa,Siwy, Mariola,Slodek, Aneta,Sulowska, Karolina,Szafraniec-Gorol, Gra?yna,Taydakov, Ilya,Vasylieva, Marharyta,Zych, Dawid
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p. 7351 - 7362
(2021/06/22)
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- Organic Light Emitting Material and Organic Light Emitting Diode Having The Same
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The present invention relates to a compound derivative for an organic electroluminescent device and an organic electroluminescent device using the same. The present invention relates to an aromatic compound including an indolocarbazolyl group and a spirobifluorenyl group, and more particularly, to an aromatic compound including an indolocarbazolyl group and a spirobifluorenyl group.
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- Novel indolo[3,2,1-jk]carbazole-based bipolar host material for highly efficient thermally activated delayed-fluorescence organic light-emitting diodes
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A novel bipolar material (ICzPyr) composed of electron-donating indolo[3,2,1-jk]carbazole and electron-withdrawing pyridmidine was developed and its use as a host material in thermally activated delayed-fluorescence (TADF) organic light-emitting diode (OL
- Hiraga, Yasuhide,Kuwahara, Rempei,Hatta, Taizo
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- Organic Light Emitting Material and Organic Light Emitting Diode Having The Same
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The present invention relates to a compound derivative used in an organic electroluminescent device, and an organic electroluminescent device using the same. More particularly, the present invention relates to an indolocarbazole derivative compound having an amine substituent. When using the indolocarbazole derivative compound as a light emitting material for an organic layer of an organic electroluminescent device, an effect of deriving high luminous efficiency even with a low driving voltage can be provided.(AA) Negative electrode(BB) Electron injection layer(CC) Electron transport layer 2(DD) Electron transport layer 1(EE) Light emission layer(FF) Electron suppression layer(GG) Hole transport layer(HH) Hole injection layer(II) Positive electrode(JJ) SubstrateCOPYRIGHT KIPO 2021
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- Indolo [3, 2, 1-jk] carbazole derivative, organic electroluminescent device and display panel
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The invention relates to an indolo [3, 2, 1-jk] carbazole derivative, an organic electroluminescent device and a display panel, and the indolo [3, 2, 1-jk] carbazole derivative has a structure shown as a formula (I). The indolo [3, 2, 1-jk] carbazole deri
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Paragraph 0046-0052
(2020/04/22)
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- Nitrogen-containing polycyclic compound, high polymer, mixture, composition and organic electronic device
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The invention discloses a nitrogen-containing polycyclic compound represented by a general formula (1), a high polymer containing the nitrogen-containing polycyclic compound, a mixture, a compositionand an organic electronic device. According to the inven
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Paragraph 0213-0216
(2020/03/12)
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- COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present invention provides a compound of chemical formula 1 and an organic light emitting device comprising the same. In chemical formula 1, Ar1, Ar2, R1, and R2 are equal to or different from each other; L1 to L3 are a direct bond or a divalent linking group; a is an integer of 1 to 9; R1 is equal to or different from each other when a is an integer of 2 or greater; b is an integer of 1 to 4; and R2 is equal to or different from each other when b is an integer of 2 or greater. The compound according to the present invention has excellent life characteristics and can exhibit high luminous efficiency even at a low driving voltage.COPYRIGHT KIPO 2019
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Paragraph 0161-0164
(2019/07/18)
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- COMPOUND AND ORGANIC ELECTRONIC DEVICE COMPRISING THE SAME
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The present invention relates to compounds represented by chemical formula I, and organic electronic devices comprising the same. The compound according to one embodiment of the present invention is used in an organic electronic device including an organic light emitting device, to lower the driving voltage of the organic electronic device, improve the light efficiency, and improve the lifetime characteristics of the device by the thermal stability of the compound.COPYRIGHT KIPO 2018
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Paragraph 0294-0297
(2018/05/03)
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- Organic high molecular compound and application thereof
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The invention discloses an organic high molecular compound and application thereof. The general formula of the compound is shown in the description. The compound is can be applied to an organic electroluminescent device, such as a hole injection layer material, a hole transmission layer material, an electron stopping layer material, a light-emitting layer material and a covering layer material. Compared with the prior art, the organic high molecular compound has the following advantages that (1) the organic high molecular compound disclosed by the invention can be used as the hole injection layer material, the hole transmission layer material, the electron stopping layer material, the light-emitting layer material containing a green phosphorescent or a red fluorescent main body substance and the like and the covering layer material, so that the organic high molecular compound is applied to preparation of the organic electroluminescent device; (2) the driving voltage can be reduced, theluminous efficiency, the brightness, the thermal stability and the color purity are improved and the service life of the device is prolonged; (3) the organic electroluminescent device prepared by adopting the compound disclosed by the invention has the advantages of high efficiency and long service life. The formula is shown in the description.
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Paragraph 0069-0072
(2018/03/26)
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- Delay fluorescent compound and using the same and display device having the organic light-emitting diode (by machine translation)
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The present invention relates to delay fluorescent compound and the use of the compound of the organic light-emitting diode and the display device. Fluorescent compounds of the present invention is shown as delay 1 is shown, wherein n is 1 or 0, A is selected from the following formula 2, D is selected from the following formula 3, L 1 and L 2 each independently is selected from the following formula 4, wherein type 2 of in R 1 is selected from hydrogen or phenyl, X, Y and Z each independently selected from the group consisting of carbon and nitrogen, and the X, Y and Z for at least two of the nitrogen, type 4 of in R 2 is selected from hydrogen or C1-C10 alkyl. (by machine translation)
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- DELAYED FLUORESCENCE COMPOUND, AND ORGANIC LIGHT EMITTING DIODE AND DISPLAY DEVICE USING THE SAME
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Discussed is a delayed fluorescence compound including a first electron donor moiety of indolo-[3,2,1-j,k]carbazole; a second electron donor moiety selected from indolo-[3,2,1-j,k]carbazole, carbazole or triphenylamine; and an electron acceptor moiety selected from dibenzothiophene sulfone or diphenyl sulfone, wherein the first and second electron donor moieties are combined to the electron acceptor moiety, and the electron acceptor moiety is combined to a first position or a para-position of the first electron donor moiety.
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- Organic Light Emitting Material Having Aromatic Amine Compound and Organic Light Emitting Diode Using The Same
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The present invention relates to a derivative compound used in an organic electroluminescent device and to an organic electroluminscent device using the same. More specifically, the present invention relates to an aromatic compound including an indolocarbazolyl group and a carbazolyl group, and can provide an organic electroluminescent device with lower driving voltage and higher luminous efficiency than an existing counterpart.
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Paragraph 0081-0084
(2021/05/26)
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- ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
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Novel host compounds containing indolo[3,2,1-jk]carbazole moiety are disclosed. These compounds are useful in phosphorescent OLEDs and particularly as hosts and/or electron-blocking layer materials.
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- Organic Light Emitting Material and Organic Light Emitting Diode Having The Same
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The present invention relates to a compound derivative used in an organic light emitting diode and to an organic light emitting diode using the same. More specifically, the present invention provides the organic light emitting diode which manufactures aromatic compounds, increases life of the diode using the aromatic compound as a hole transport material of the organic light emitting diode, and has enhanced luminance and luminous efficiency.(AA) Negative electrode(BB) Electron injection layer(CC) Electron transport layer(DD) Light emitting layer(EE) Hole transport layer(FF) Hole injection layer(GG) Positive electrode(HH) SubstrateCOPYRIGHT KIPO 2015
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- Organic Light Emitting Material and Organic Light Emitting Diode Having The Same
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The present invention relates to a compound derivative used in an organic light emitting diode and to an organic light emitting diode using the same. More specifically, the present invention provides the organic light emitting diode which manufactures aromatic amine derivative compounds, increases life of the diode using the aromatic amine derivative compound as a hole transporting material of the organic light emitting diode, and has enhanced luminance and luminous efficiency.
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- Indolocarbazol [3, 2, 1-jk] Hydroxycarbazole compound and an organic light emitting element having the same
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There is provided an indolo[3,2,1-jk]carbazole compound having an excellent membrane property, a high T1 energy, and a deep HOMO level. There is also provided an organic light-emitting device that contains the indolo[3,2,1-jk]carbazole compound. There is
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- Condensed cyclic compound and organic light emitting device including the same
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Disclosed are a condensed-ring compound and an organic light emitting device comprising the same. The condensed-ring compound is represented by chemical formula 1A or 1C. The organic light emitting device comprising the condensed-ring compound can have a
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- Oxadiazole based bipolar host materials employing planarized triarylamine donors for RGB PHOLEDs with low efficiency roll-off
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A series of 6 novel triarylamine-containing oxadiazole compounds (o-PCzPOXD, o-ICzPOXD, o-TPATOXD, o-PCzTOXD, o-ICzTOXD, o-CzTOXD) have been designed, synthesized and characterized concerning applications as host materials in PHOLED devices. To further improve the ortho-linkage concept, the impact of incorporating planarized electron-donating triarylamine (TAA) structures on intramolecular charge transfer was examined. The effect was evaluated for two series of electron-accepting oxadiazole scaffolds, realizing ortho-linkage on the benzene (POXD) and the thiophene (TOXD) cores. Thermal analysis shows increased glass-transition temperatures for planarized structures indicating an improved morphological stability. A higher degree of planarization also results in significantly increased singlet and triplet energy values, revealing the impact on the intramolecular charge transfer. Employing the developed materials, red (o-TPATOXD: CEmax: 28.8 cd A -1, EQEmax: 16.9%), green (o-PCzPOXD: CEmax: 62.9 cd A-1, EQEmax: 17.1%) and blue (o-PCzPOXD: CE max: 29.8 cd A-1, EQEmax: 13.4%) devices were achieved showing remarkably low efficiency roll-off for planarized donors. Hence, this is the first report of efficient blue devices for this specific class of host materials. It is proposed that the results correlate with an increasing ortho-linkage effect and decreasing donor strength of the TAA moiety by planarization and, thus, tackling one of the major challenges in PHOLED research: improving both triplet energy and compound stability. The Royal Society of Chemistry.
- Kautny, Paul,Lumpi, Daniel,Wang, Yanping,Tissot, Antoine,Bintinger, Johannes,Horkel, Ernst,Stoeger, Berthold,Hametner, Christian,Hagemann, Hans,Ma, Dongge,Froehlich, Johannes
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p. 2069 - 2081
(2014/03/21)
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- AMINOINDOLO[3,2,1-jk]CARBAZOLE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
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The present invention provides a novel aminoindolo[3,2,1-jk]carbazole compound having a good film-forming property and provides an organic light-emitting device including the compound. Provided is the aminoindolo[3,2,1-jk]carbazole compound represented by Formula [1] according to Claim 1. In Formula [1], l represents an integer of 1 to 3; n and m each independently represent an integer of 0 to 2; and R1 to R32 represent hydrogen atom, alkyl groups having 1 to 8 carbon atoms or fluorine atoms, wherein the alkyl groups may contain fluorine atoms.
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- ORGANIC ELECTROLUMINESCENCE DEVICE
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An organic electroluminescence device includes: a pair of electrodes; and at least one organic layer including a light emitting layer, the light emitting layer being provided between the pair of electrodes, wherein at least one layer of the at least one o
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- The production and characterisation of novel conducting redox-active oligomeric thin films from electrooxidised indolo[3,2,l-jk]carbazole
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Indolo[3,2,l-jk]carbazole (IC) has been synthesised on a gram scale by flash vacuum pyrolysis. In contrast to a previous suggestion, IC is planar and it is also highly fluorescent, with a solution quantum yield of 0.41. Electro-oxidation of IC at a rotati
- Wharton, Stuart I.,Henry, John B.,McNab, Hamish,Mount, Andrew R.
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experimental part
p. 5482 - 5490
(2009/12/27)
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