Patents by Inventor Zeev Valentine Vardeny
Zeev Valentine Vardeny 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: 11964994Abstract: The present disclosure relates to a composition that includes a perovskite of A2BX4, where A includes an R-form of a chiral molecule of at least one of and/or an S-form of the chiral molecule, B includes a cation, X includes an anion, R1 includes a first carbon chain having between 2 and 5 carbon atoms, R2 includes at least one of a hydrogen atom, a halogen atom, a carboxylic acid group, an alkoxy group, and/or a second carbon chain, and R3 includes a third carbon chain.Type: GrantFiled: December 2, 2020Date of Patent: April 23, 2024Assignees: Alliance for Sustainable Energy, LLC, Duke UniversityInventors: Matthew C. Beard, Haipeng Lu, Annalise Elizabeth Maughan, Joseph Jonathan Berry, Zeev Valentine Vardeny, Chuanxiao Xiao, Volker Wolfgang Blum, David Brian Mitzi
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Publication number: 20210175439Abstract: The present disclosure relates to a composition that includes a perovskite of A2BX4, where A includes an R-form of a chiral molecule of at least one of and/or an S-form of the chiral molecule, B includes a cation, X includes an anion, R1 includes a first carbon chain having between 2 and 5 carbon atoms, R2 includes at least one of a hydrogen atom, a halogen atom, a carboxylic acid group, an alkoxy group, and/or a second carbon chain, and R3 includes a third carbon chain.Type: ApplicationFiled: December 2, 2020Publication date: June 10, 2021Inventors: Matthew C. BEARD, Haipeng LU, Annalise Elizabeth MAUGHAN, Joseph Jonathan BERRY, Zeev Valentine VARDENY, Chuanxiao XIAO, Volker Wolfgang BLUM, David Brian MITZI
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Patent number: 10734585Abstract: An organic light-emitting apparatus includes an organic light-emitting device and a magnetic field-applying member that applies a magnetic field to the organic light-emitting device. The organic light-emitting device includes a host and a dopant.Type: GrantFiled: February 23, 2016Date of Patent: August 4, 2020Assignees: SAMSUNG ELECTRONICS CO., LTD., UNIVERSITY OF UTAH RESEARCH FOUNDATIONInventors: Ohyun Kwon, Hyeonho Choi, Kyuyoung Hwang, Youngjae Park, Byoungki Choi, Zeev Valentine Vardeny, Dali Sun, Tek Prasad Basel
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Patent number: 10665797Abstract: In one aspect, field effect transistors are described herein employing channels formed of hybrid halide perovskite materials. For example, a field effect transistor comprises a source terminal, a drain terminal and a gate terminal wherein a dielectric layer is positioned between the gate terminal and the source and drain terminals. A channel layer is in electrical communication with the source terminal and the drain terminal, the channel layer comprising an organic-inorganic perovskite in contact with a polymeric surface of the dielectric layer.Type: GrantFiled: November 9, 2016Date of Patent: May 26, 2020Assignees: WAKE FOREST UNIVERSITY, UNIVERSITY OF UTAH RESEARCH FOUNDATIONInventors: Yaochuan Mei, Oana Diana Jurchescu, Zeev Valentine Vardeny, Chuang Zhang
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Patent number: 10366653Abstract: An organic light-emitting device including a magnetoresistive element including a first magnetic layer, a second magnetic layer, and a separation layer disposed between the first magnetic layer and the second magnetic layer, an organic light-emitting element electrically connected to the magnetoresistive element, wherein the organic light-emitting element comprises a first electrode, a second electrode, and an organic light-emission layer disposed between the first electrode and the second electrode, a magnetic field applying unit configured to apply a magnetic field to at least the magnetoresistive element, and optionally, to the organic light-emitting element, a power source configured to supply a current between the magnetoresistive element and the organic light-emitting element, and a current source configured to apply a current between both terminals of the organic light-emitting element, wherein light-emission characteristics of the organic light-emitting device are changed depending on a direction andType: GrantFiled: March 6, 2017Date of Patent: July 30, 2019Assignees: SAMSUNG ELECTRONICS CO., LTD., UNIVERSITY OF UTAH RESEARCH FOUNDATIONInventors: Ohyun Kwon, Youngjae Park, Hyun Koo, Byoungki Choi, Zeev Valentine Vardeny, Chuang Zhang, Dali Sun, Zhiyong Pang
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Publication number: 20180351121Abstract: In one aspect, field effect transistors are described herein employing channels formed of hybrid halide perovskite materials. For example, a field effect transistor comprises a source terminal, a drain terminal and a gate terminal wherein a dielectric layer is positioned between the gate terminal and the source and drain terminals. A channel layer is in electrical communication with the source terminal and the drain terminal, the channel layer comprising an organic-inorganic perovskite in contact with a polymeric surface of the dielectric layer.Type: ApplicationFiled: November 9, 2016Publication date: December 6, 2018Applicants: WAKE FOREST UNIVERSITY, University of Utah Research FoundationInventors: Yaochuan MEI, Oana Diana JURCHESCU, Zeev Valentine VARDENY, Chuang Zhang
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Publication number: 20180114484Abstract: An organic light-emitting device including a magnetoresistive element including a first magnetic layer, a second magnetic layer, and a separation layer disposed between the first magnetic layer and the second magnetic layer, an organic light-emitting element electrically connected to the magnetoresistive element, wherein the organic light-emitting element comprises a first electrode, a second electrode, and an organic light-emission layer disposed between the first electrode and the second electrode, a magnetic field applying unit configured to apply a magnetic field to at least the magnetoresistive element, and optionally, to the organic light-emitting element, a power source configured to supply a current between the magnetoresistive element and the organic light-emitting element, and a current source configured to apply a current between both terminals of the organic light-emitting element, wherein light-emission characteristics of the organic light-emitting device are changed depending on a direction andType: ApplicationFiled: March 6, 2017Publication date: April 26, 2018Inventors: Ohyun KWON, Youngjae PARK, Hyun KOO, Byoungki CHOI, Zeev Valentine VARDENY, Chuang ZHANG, Dali SUN, Zhiyong PANG
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Patent number: 9799842Abstract: Spin-polarized organic light-emitting diodes are provided. Such spin-polarized organic light-emitting diodes incorporate ferromagnetic electrodes and show considerable spin-valve magneto-electroluminescence and magneto-conductivity responses, with voltage and temperature dependencies that originate from the bipolar spin-polarized space charge limited current.Type: GrantFiled: July 3, 2013Date of Patent: October 24, 2017Assignee: University of Utah Research FoundationInventors: Zeev Valentine Vardeny, Tho Duc Nguyen, Eitan Avraham Ehrenfreund
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Publication number: 20170244042Abstract: An organic light-emitting apparatus includes an organic light-emitting device and a magnetic field-applying member that applies a magnetic field to the organic light-emitting device. The organic light-emitting device includes a host and a dopant.Type: ApplicationFiled: February 23, 2016Publication date: August 24, 2017Inventors: Ohyun KWON, Hyeonho CHOI, Kyuyoung HWANG, Youngjae PARK, Byoungki CHOI, Zeev Valentine VARDENY, Dali SUN, Tek Prasad BASEL
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Patent number: 9444065Abstract: A polymer mixture emits a broad spectrum of visible light that appears white or near-white in the aggregate. The polymer mixture comprises two (or more) components in the active layer. A heavy atom, such as platinum and/or iridium, present in the backbone of the mixture acts via a spin-orbit coupling mechanism to cause the ratio of fluorescent to phosphorescent light emission bands to be of approximately equal strength. These two broad emissions overlap, resulting in an emission spectrum that appears to the eye to be white.Type: GrantFiled: May 14, 2007Date of Patent: September 13, 2016Assignee: The University of Utah Research FoundationInventors: Zeev Valentine Vardeny, Leonard Wojcik, Tomer Drori
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Publication number: 20150162557Abstract: Spin-polarized organic light-emitting diodes are provided. Such spin-polarized organic light-emitting diodes incorporate ferromagnetic electrodes and show considerable spin-valve magneto-electroluminescence and magneto-conductivity responses, with voltage and temperature dependencies that originate from the bipolar spin-polarized space charge limited current.Type: ApplicationFiled: July 3, 2013Publication date: June 11, 2015Inventors: Zeev Valentine Vardeny, Tho Duc Nguyen, Eitan Avraham Ehrenfreund
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Publication number: 20140352788Abstract: An organic spintronic photovoltaic device having an organic electron active layer functionally associated with a pair of electrodes. The organic electron active layer can include a spin active molecular radical distributed in the active layer which increases spin-lattice relaxation rates within the active layer. The increased spin lattice relaxation rate can also influence the efficiency of OLED and charge mobility in FET device.Type: ApplicationFiled: August 20, 2014Publication date: December 4, 2014Inventors: Zeev Valentine Vardeny, Alex Ndobe
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Patent number: 8686627Abstract: An organic light emitting diode (OLED) uses a ?-conjugated polymer emissive layer (MEH-PPV) sandwiched between two semitransparent electrodes. The preferred embodiment utilizes an optically thin gold film anode, whereas the cathode was in the form of an optically thick aluminum (Al) film with patterned periodic subwavelength 2D hole array that showed anomalous transmission in the spectral range of the polymer photoluminescence band. At similar current densities we obtained a seven-fold electroluminescence efficiency enhancement with the patterned Al device compared with a control device based on unperforated Al electrode.Type: GrantFiled: April 14, 2006Date of Patent: April 1, 2014Assignee: University of Utah Research FoundationInventors: Zeev Valentine Vardeny, Chuanzhen Liu, Vladimir Kamaev
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Publication number: 20090313891Abstract: A class of organic light-emitting diodes (OLEDs) emit light tailored to the absorption spectra of growing plants. Upon photoexcitation, the OLEDs generate light in both the blue-green and red regions of the visible spectrum. A heavy metal atom present in the ?-conjugated polymer chain (such as platinum and/or iridium) acts via the spin-orbit coupling mechanism to cause an enhancement of the ratio of fluorescent to phosphorescent emission to be of approximately equal strength. These two emission bands overlap the absorption spectra of common plants grown under hydroponic conditions.Type: ApplicationFiled: May 14, 2007Publication date: December 24, 2009Applicant: University of UtahInventors: Zeev Valentine Vardeny, Leonard Wojcik, Tomer Drori, Matthew C. DeLong
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Publication number: 20090310332Abstract: A polymer mixture emits a broad spectrum of visible light that appears white or near-white in the aggregate. The polymer mixture comprises two (or more) components in the active layer. A heavy atom, such as platinum and/or iridium, present in the backbone of the mixture acts via a spin-orbit coupling mechanism to cause the ratio of fluorescent to phosphorescent light emission bands to be of approximately equal strength. These two broad emissions overlap. resulting in an emission spectrum that appears to the eye to be white.Type: ApplicationFiled: May 14, 2007Publication date: December 17, 2009Applicant: University of UtahInventors: Zeev Valentine Vardeny, Leonard Wojcik, Tomer Drori