Patents by Inventor Denis Y. Kondakov
Denis Y. Kondakov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9666826Abstract: An electroluminescent device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL), the device further containing an electron transport layer (ETL) comprising an anthracene compound on the cathode side of the LEL and an organic electron injection layer (EIL) between the ETL and the cathode comprising a phenanthroline compound, wherein the thickness of the EIL and LEL are such that the ratio of the thickness of the EIL to LEL is greater than 0.125.Type: GrantFiled: April 27, 2006Date of Patent: May 30, 2017Assignee: Global OLED Technology LLCInventors: Denis Y. Kondakov, Scott R. Conley, Kevin P. Klubek
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Patent number: 9634256Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL) comprising a phosphorescent emitting compound disposed in a host comprising a mixture of at least one electron transporting co-host which is a benzophenone derivative with a spiro substituent and at least one hole transporting co-host which is a triphenylamine which contains one trivalent nitrogen atom that is bonded only to carbon atoms, at least one of which is a member of an aromatic ring, wherein there is present an electron transporting layer contiguous to the LEL (HBL?) on the cathode side comprising an anthracene or a fluoranthene and wherein there is present an election injecting layer comprising a phenanthroline or a lithium quinolate contiguous to the cathode.Type: GrantFiled: July 9, 2015Date of Patent: April 25, 2017Inventors: Marina E. Kondakova, Denis Y. Kondakov, Christopher T. Brown, Tukaram K. Hatwar, Jeffrey P. Spindler, William J. Begley
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Patent number: 9620721Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light-emitting layer wherein the light-emitting layer comprises (a) a 2-arylanthracene compound and (b) a light-emitting second anthracene compound having amino substitution at a minimum of two positions, wherein at least one amine is substituted at the 2 position of the second anthracene compound.Type: GrantFiled: February 7, 2014Date of Patent: April 11, 2017Assignee: Global OLED Technology LLCInventors: Kevin P. Klubek, Liang-Sheng Liao, Viktor V. Jarikov, Denis Y. Kondakov, William J. Begley, Michele L. Ricks
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Publication number: 20150311447Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL) comprising a phosphorescent emitting compound disposed in a host comprising a mixture of at least one electron transporting co-host which is a benzophenone derivative with a spiro substituent and at least one hole transporting co-host which is a triphenylamine which contains one trivalent nitrogen atom that is bonded only to carbon atoms, at least one of which is a member of an aromatic ring, wherein there is present an electron transporting layer contiguous to the LEL (HBL?) on the cathode side comprising an anthracene or a fluoranthene and wherein there is present an election injecting layer comprising a phenanthroline or a lithium quinolate contiguous to the cathode.Type: ApplicationFiled: July 9, 2015Publication date: October 29, 2015Inventors: Marina E. KONDAKOVA, Denis Y. KONDAKOV, Christopher T. BROWN, Tukaram K. HATWAR, Jeffrey P. Spindler, William J. Begley
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Patent number: 9118020Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL) comprising a phosphorescent emitting compound disposed in a host comprising a mixture of at least one electron transporting co-host which is a benzophenone derivative with a spiro substituent and at least one hole transporting co-host which is a triphenylamine which contains one trivalent nitrogen atom that is bonded only to carbon atoms, at least one of which is a member of an aromatic ring, wherein there is present an electron transporting layer contiguous to the LEL (HBL?) on the cathode side comprising an anthracene or a fluoranthene and wherein there is present an election injecting layer comprising a phenanthroline or a lithium quinolate contiguous to the cathode.Type: GrantFiled: December 9, 2009Date of Patent: August 25, 2015Assignee: Global OLED Technology LLCInventors: Marina E. Kondakova, Denis Y. Kondakov, Christopher T. Brown, Tukaram K. Hatwar, Jeffrey P. Spindler, William J. Begley
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Patent number: 8795855Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light-emitting layer wherein the light-emitting layer comprises (a) a 2-arylanthracene compound and (b) a light-emitting second anthracene compound having amino substitution at a minimum of two positions, wherein at least one amine is substituted at the 2 position of the second anthracene compound.Type: GrantFiled: January 30, 2007Date of Patent: August 5, 2014Assignee: Global OLED Technology LLCInventors: Kevin P. Klubek, Liang-Sheng Liao, Viktor V. Jarikov, Denis Y. Kondakov, William J. Begley, Michele L. Ricks
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Publication number: 20140151676Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light-emitting layer wherein the light-emitting layer comprises (a) a 2-arylanthracene compound and (b) a light-emitting second anthracene compound having amino substitution at a minimum of two positions, wherein at least one amine is substituted at the 2 position of the second anthracene compound.Type: ApplicationFiled: February 7, 2014Publication date: June 5, 2014Applicant: Global OLED Technology LLCInventors: Kevin P. Klubek, Liang-Sheng Liao, Viktor V. Jarikov, Denis Y. Kondakov, William J. Begley, Michele L. Ricks
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Patent number: 8603642Abstract: The invention provides an electronic device including an anode and a cathode, between which there are at least two organic phototransducing units where the units are separated by an intermediate connecting region which comprises in sequence: an organic p-type layer, an intermediate layer in direct contact with the organic p-type layer and including a compound that has a LUMO more negative than ?3.0 eV and is different from the organic compound in the organic p-type layer, and an n-type doped organic layer in direct contact with the intermediate layer and including an electron transport material as a host and an organic n-dopant with a HOMO less negative than ?4.5 eV. In one embodiment, the electronic device is a tandem OLED.Type: GrantFiled: May 13, 2009Date of Patent: December 10, 2013Assignee: Global OLED Technology LLCInventors: Tukaram K. Hatwar, Jeffrey P. Spindler, Denis Y. Kondakov, Steven A. Van Slyke, Sven Z. Murano, Gufeng He
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Patent number: 7947974Abstract: An OLED device including an anode, a hole transporting layer (HTL), a light-emitting layer (LEL) comprising a host molecule and a light-emitting molecule, an electron transporting layer (ETL) and an cathode and wherein: (i) the HTL comprises a hole transporting material (HTM) having an oxidation potential that is at least 0.2 V less positive than the oxidation potential of the predominant material in the ETL and does not contain any bonds having an energy less than 105 kcal/mol; and (ii) the ETL comprises an electron transporting material (ETM) having a reduction potential (RPetm) relative to the reduction potential of the predominant material in the HTL (RPhtm) that meets the requirement of RPetm>(RPhtm?0.05). The OLED Device provides improvements in features including efficiency.Type: GrantFiled: March 25, 2008Date of Patent: May 24, 2011Assignee: Global OLED Technology LLCInventor: Denis Y. Kondakov
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Publication number: 20110014739Abstract: A method of making an electroluminescent device having a substrate, and at least one blue light emitting layer and at least one non-emissive layer containing an emissive material that emits light longer in wavelength than blue light, these two layers being directly separated by and in direct contact with a non-emissive buffer layer; and heating the electroluminescent device after fabrication to cause the long wavelength emissive material to diffuse from the non-emissive layer into at least the buffer layer such that the long wavelength emissive material comes into contact with the blue light-emitting layer such that the recombination energy in the emitting layer is preferentially transferred to the diffused emissive material compared to the blue emissive material and the light emitted is longer in wavelength than blue light.Type: ApplicationFiled: July 16, 2009Publication date: January 20, 2011Inventor: Denis Y. Kondakov
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Publication number: 20100288362Abstract: The invention provides an electronic device including an anode and a cathode, between which there are at least two organic phototransducing units where the units are separated by an intermediate connecting region which comprises in sequence: an organic p-type layer, an intermediate layer in direct contact with the organic p-type layer and including a compound that has a LUMO more negative than ?3.0 eV and is different from the organic compound in the organic p-type layer, and an n-type doped organic layer in direct contact with the intermediate layer and including an electron transport material as a host and an organic n-dopant with a HOMO less negative than ?4.5 eV. In one embodiment, the electronic device is a tandem OLED.Type: ApplicationFiled: May 13, 2009Publication date: November 18, 2010Inventors: Tukaram K. Hatwar, Jeffrey P. Spindler, Denis Y. Kondakov, Steven A. Van Slyke, Sven Z. Murano, Gufeng He
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Patent number: 7733009Abstract: An electroluminescent device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL), the device further containing an electron transport layer (ETL) on the cathode side of the LEL and an organic electron injection layer (EIL) contiguous to the ETL on the cathode side, wherein the ETL contains a monoanthracene compound bearing aromatic groups in the 2-, 9-, and 10-positions.Type: GrantFiled: April 27, 2006Date of Patent: June 8, 2010Assignee: Global OLED Technology LLCInventors: Denis Y. Kondakov, Scott R. Conley, Kevin P. Klubek, J. Ramon Vargas
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Patent number: 7709105Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light-emitting layer containing a phosphorescent emitter and a host comprising a first aluminum or gallium complex containing at least one 2-(2-hydroxyphenyl)pyridine ligand and at least one phenoxy ligand, wherein the phenoxy ligand is substituted by an amine or there is further present adjacent to the light-emitting layer on the cathode side a layer containing a second aluminum or gallium complex containing at least one 2-(2-hydroxyphenyl)pyridine ligand and at least one phenoxy ligand.Type: GrantFiled: December 14, 2005Date of Patent: May 4, 2010Assignee: Global OLED Technology LLCInventors: Denis Y. Kondakov, Tommie L. Royster, Jr., Christopher T. Brown
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Publication number: 20100084647Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL) comprising a phosphorescent emitting compound disposed in a host comprising a mixture of at least one electron transporting co-host which is a benzophenone derivative with a spiro substituent and at least one hole transporting co-host which is a triphenylamine which contains one trivalent nitrogen atom that is bonded only to carbon atoms, at least one of which is a member of an aromatic ring, wherein there is present an electron transporting layer contiguous to the LEL (HBL?) on the cathode side comprising an anthracene or a fluoranthene and wherein there is present an election injecting layer comprising a phenanthroline or a lithium quinolate contiguous to the cathode.Type: ApplicationFiled: December 9, 2009Publication date: April 8, 2010Inventors: MARINA E. KONDAKOVA, Denis Y. Kondakov, Christopher T. Brown, Tukaram K. Hatwar, Jeffrey P. Spindler
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Publication number: 20090242877Abstract: The invention provides an OLED device comprising, in the following order, a anode, a hole transporting layer (HTL), a light-emitting layer (LEL) comprising a host molecule and a light-emitting molecule, an electron transporting layer (ETL) and an cathode and wherein: (i) the HTL comprises a hole transporting material (HTM) having an oxidation potential that is at least 0.2 V less positive than the oxidation potential of the predominant material in the ETL and does not contain any bonds having an energy less than 105 kcal/mol; and (ii) the ETL comprises an electron transporting material (ETM) having a reduction potential (RPetm) relative to the reduction potential of the predominant material in the HTL (RPhtm) that meets the requirement of RPetm>(RPhtl?0.05). Devices of the invention provide improvement in features including efficiency.Type: ApplicationFiled: March 25, 2008Publication date: October 1, 2009Inventor: Denis Y. Kondakov
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Patent number: 7553558Abstract: An OLED device comprises a cathode, an anode, and a light-emitting layer therebetween, and additionally comprises a layer between the cathode and the light-emitting layer including a compound comprising one and only one anthracene nucleus bearing no more than two phenanthroline-containing substituents wherein said anthracene nucleus is substituted in the 2-, 3-, 6-, or 7-position with a phenanthroline-containing substituent. When such materials are included in a layer, such as an electron-transporting layer, that provide both desirable electroluminescent properties as well as good device stability.Type: GrantFiled: November 30, 2005Date of Patent: June 30, 2009Assignee: Eastman Kodak CompanyInventors: Kevin P. Klubek, Denis Y. Kondakov
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Patent number: 7476739Abstract: A process for forming a facial tris-cyclometallated iridium or rhodium complex isomer comprises heating an original solid composition containing meridional isomer of the metal complex at a temperature and for a time sufficient to form a product containing the facial isomer in an increased ratio to meridional isomer compared to the original composition.Type: GrantFiled: May 20, 2005Date of Patent: January 13, 2009Assignee: Eastman Kodak CompanyInventors: Shouquan Huo, Joseph C. Deaton, Denis Y. Kondakov
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Publication number: 20080284318Abstract: An electroluminescent device comprises a) a fluorescent light emitting layer comprising a fluorescent emitter and a fluorescent host material wherein the HOMO energy level of the fluorescent host material is not more than 0.1 eV more negative than that of the fluorescent emitter; b) a phosphorescent light emitting layer comprising a phosphorescent emitter and a phosphorescent host material; and c) a spacer layer interposed between the fluorescent light emitting layer and the phosphorescent light emitting layer; wherein the triplet energy of the fluorescent host material is not more than 0.2 eV less than the triplet energy of both the spacer layer material and of the phosphorescent host material. The materials within these layers are selected so that the HOMO and triplet energy levels satisfy certain interrelationships. The invention provides devices that emit light with high luminous efficiency.Type: ApplicationFiled: May 17, 2007Publication date: November 20, 2008Inventors: Joseph C. Deaton, Denis Y. Kondakov, Marina E. Kondakava, Kevin P. Klubek, Dustin L. Comfort
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Publication number: 20080286610Abstract: An electroluminescent device comprises a cathode and an anode; and located therebetween, a fluorescent light-emitting layer (LEL) comprising at least one fluorescent emitter and a host, together with at least one phosphorescent light-emitting layer comprising at least one phosphorescent emitter and a host, and having a spacer layer interposed between the fluorescent and phosphorescent light-emitting layers. The materials within these layers are selected so that the triplet energy levels of certain components satisfy certain interrelationships. The invention provides devices that emit light with high luminous efficiency at low voltage.Type: ApplicationFiled: May 17, 2007Publication date: November 20, 2008Inventors: Joseph C. Deaton, Marina E. Kondakova, David J. Giesen, William J. Begley, Denis Y. Kondakov
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Publication number: 20080182129Abstract: An OLED device comprises a cathode, an anode, and has therebetween a light-emitting layer wherein the light-emitting layer comprises (a) a 2-arylanthracene compound and (b) a light-emitting second anthracene compound having amino substitution at a minimum of two positions, wherein at least one amine is substituted at the 2 position of the second anthracene compound.Type: ApplicationFiled: January 30, 2007Publication date: July 31, 2008Inventors: Kevin P. Klubek, Liang-Sheng Liao, Viktor V. Jarikov, Denis Y. Kondakov, William J. Begley, Michele L. Ricks