Patents by Inventor Nathalie Gresty
Nathalie Gresty 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: 11903225Abstract: A photodetector includes a first electrode; an interlayer disposed on the first electrode; a photoabsorbing layer disposed on the interlayer, the photoabsorbing layer having one or more charge transport materials, and a plurality of two-dimensional quantum dots (2D QDs) dispersed in the one or more charge transport material; and a second electrode disposed on the photoabsorbing layer. A heterostructure photodetector includes a first electrode; a first photoabsorbing layer disposed on the first electrode, the first photoabsorbing layer having a first photoabsorbing material; a second photoabsorbing layer disposed on the first photoabsorbing layer, the second photoabsorbing layer having a second photoabsorbing material; and a second electrode disposed on the second photoabsorbing layer.Type: GrantFiled: March 24, 2022Date of Patent: February 13, 2024Inventors: Nigel Pickett, Stuart Stubbs, Nathalie Gresty
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Patent number: 11884853Abstract: A nanoparticle conjugate includes a quantum dot (QD) and a thermally activated delayed fluorescence (TADF) molecule bound to the QD. In some instances, the TADF molecule can be directly bound to a surface of the QD. In other instances, the TADF molecule can be indirectly bound to the QD via an interaction with one or more capping ligands disposed on a surface of the QD. Nanoparticle conjugates described herein can be incorporated into emissive layers of electroluminescent light-emitting diode devices to yield electroluminescent quantum dot-containing light-emitting diode (QD-LED) devices.Type: GrantFiled: October 30, 2019Date of Patent: January 30, 2024Assignee: KYULUX, INC.Inventors: Stuart Stubbs, Nathalie Gresty, James Harris, Yu Seok Yang, Shuo-Hsien Cheng, Ayataka Endo
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Publication number: 20220216438Abstract: A photodetector includes a first electrode; an interlayer disposed on the first electrode; a photoabsorbing layer disposed on the interlayer, the photoabsorbing layer having one or more charge transport materials, and a plurality of two-dimensional quantum dots (2D QDs) dispersed in the one or more charge transport material; and a second electrode disposed on the photoabsorbing layer. A heterostructure photodetector includes a first electrode; a first photoabsorbing layer disposed on the first electrode, the first photoabsorbing layer having a first photoabsorbing material; a second photoabsorbing layer disposed on the first photoabsorbing layer, the second photoabsorbing layer having a second photoabsorbing material; and a second electrode disposed on the second photoabsorbing layer.Type: ApplicationFiled: March 24, 2022Publication date: July 7, 2022Inventors: Nigel Pickett, Stuart Stubbs, Nathalie Gresty
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Publication number: 20220010203Abstract: A nanoparticle conjugate includes a quantum dot (QD) and a thermally activated delayed fluorescence (TADF) molecule bound to the QD. In some instances, the TADF molecule can be directly bound to a surface of the QD. In other instances, the TADF molecule can be indirectly bound to the QD via an interaction with one or more capping ligands disposed on a surface of the QD. Nanoparticle conjugates described herein can be incorporated into emissive layers of electroluminescent light-emitting diode devices to yield electroluminescent quantum dot-containing light-emitting diode (QD-LED) devices.Type: ApplicationFiled: October 30, 2019Publication date: January 13, 2022Inventors: Stuart STUBBS, Nathalie GRESTY, James HARRIS, Yu Seok YANG, Shuo-Hsien CHENG, Ayataka ENDO
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Publication number: 20210167295Abstract: Emissive layers for electroluminescent display devices are described herein. The emissive layer can include a two-dopant system having a population of quantum dots (QDs) and a population of molecules exhibiting thermally activated delayed fluorescence (TADF). In some instances, one or both of the QDs and TADF molecules can be disposed in a host matrix. In some instances, the QDs and TADF molecules can be disposed in separate host matrices. In some instances, an electroluminescent display device can include an emissive layer comprising a population of quantum dots (QDs) and a layer adjacent to the emissive layer, the adjacent layer comprising a population of molecules exhibiting thermally activated delayed fluorescence (TADF).Type: ApplicationFiled: April 4, 2019Publication date: June 3, 2021Inventors: Stuart STUBBS, Nathalie GRESTY, James HARRIS, Nigel PICKETT, Zugang LIU, Ayataka ENDO, Chris BROWN
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Publication number: 20210159438Abstract: An emissive layer of an electroluminescent device, such as an electroluminescent display device, includes a host matrix and a two-dopant system dispersed in the host matrix. The two-dopant system has a fluorescent emitter dopant and an emissive donor-assistant dopant. The emissive donor-assistant dopant can be a fluorescence donor-assistant dopant or a phosphorescence donor-assistant dopant. The physical distance between the fluorescent emitter dopant and the emissive donor-assistant dopant can be controlled by using various capping ligands, which are bound to a surface of the fluorescent emitter dopant.Type: ApplicationFiled: April 5, 2019Publication date: May 27, 2021Inventors: Nigel PICKETT, James HARRIS, Nathalie GRESTY, Stuart STUBBS
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Patent number: 10756221Abstract: Materials and methods for preparing Cu2XSnY4 nanoparticles, wherein X is Zn, Cd, Hg, Ni, Co, Mn or Fe and Y is S or Se, (CXTY) are disclosed herein. The nanoparticles can be used to make layers for use in thin film photovoltaic (PV) cells. The CXTY materials are prepared by a colloidal synthesis in the presence of labile organo-chalcogens. The organo-chalcogens serves as both a chalcogen source for the nanoparticles and as a capping ligand for the nanoparticles.Type: GrantFiled: September 12, 2018Date of Patent: August 25, 2020Assignee: Nanoco Technologies, Ltd.Inventors: Nathalie Gresty, James Harris, Ombretta Masala, Nigel Pickett, Laura Wylde, Christopher Newman
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Patent number: 10655815Abstract: A lighting fixture for promoting the development of animals comprises a backlight, such as an LED or an array of LEDs, and a series of one or more retractable, rotatable or interchangeable lenses comprising quantum dots, such that the color and/or color temperature of the light emitted by the lighting fixture can be altered and optimized during animal development. A lighting fixture adapted for use on an aquarium may be in the form factor of a standard fluorescent tube and comprise one or more LEDs and a quantum dot-containing film for down-converting at least a portion of the light emitted by the LEDs so as to provide optimum wavelengths for photosynthesis by aquarium plants while simultaneously providing attractive display lighting for the aquarium fish.Type: GrantFiled: January 20, 2017Date of Patent: May 19, 2020Assignee: Nanoco Technologies Ltd.Inventors: Nigel Pickett, Nathalie Gresty
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Publication number: 20200067002Abstract: A photodetector includes a first electrode; an interlayer disposed on the first electrode; a photoabsorbing layer disposed on the interlayer, the photoabsorbing layer having one or more charge transport materials, and a plurality of two-dimensional quantum dots (2D QDs) dispersed in the one or more charge transport material; and a second electrode disposed on the photoabsorbing layer. A heterostructure photodetector includes a first electrode; a first photoabsorbing layer disposed on the first electrode, the first photoabsorbing layer having a first photoabsorbing material; a second photoabsorbing layer disposed on the first photoabsorbing layer, the second photoabsorbing layer having a second photoabsorbing material; and a second electrode disposed on the second photoabsorbing layer.Type: ApplicationFiled: August 19, 2019Publication date: February 27, 2020Inventors: Nigel Pickett, Stuart Stubbs, Nathalie Gresty
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Patent number: 10233390Abstract: Light-emitting materials are made from a porous light-emitting semiconductor having quantum dots (QDs) disposed within the pores. According to some embodiments, the QDs have diameters that are essentially equal in size to the width of the pores. The QDs are formed in the pores by exposing the porous semiconductor to gaseous QD precursor compounds, which react within the pores to yield QDs. According to certain embodiments, the pore size limits the size of the QDs produced by the gas-phase reactions. The QDs absorb light emitted by the light-emitting semiconductor material and reemit light at a longer wavelength than the absorbed light, thereby “down-converting” light from the semiconductor material.Type: GrantFiled: February 17, 2017Date of Patent: March 19, 2019Assignee: Nanoco Technologies Ltd.Inventors: Nigel Pickett, Nathalie Gresty
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Publication number: 20190019906Abstract: Materials and methods for preparing Cu2XSnY4 nanoparticles, wherein X is Zn, Cd, Hg, Ni, Co, Mn or Fe and Y is S or Se, (CXTY) are disclosed herein. The nanoparticles can be used to make layers for use in thin film photovoltaic (PV) cells. The CXTY materials are prepared by a colloidal synthesis in the presence of labile organo-chalcogens. The organo-chalcogens serves as both a chalcogen source for the nanoparticles and as a capping ligand for the nanoparticles.Type: ApplicationFiled: September 12, 2018Publication date: January 17, 2019Inventors: Nathalie Gresty, James Harris, Ombretta Masala, Nigel Pickett, Laura Wylde, Christopher Newman
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Patent number: 10177263Abstract: Materials and methods for preparing Cu2XSnY4 nanoparticles, wherein X is Zn, Cd, Hg, Ni, Co, Mn or Fe and Y is S or Se, (CXTY) are disclosed herein. The nanoparticles can be used to make layers for use in thin film photovoltaic (PV) cells. The CXTY materials are prepared by a colloidal synthesis in the presence of labile organo-chalcogens. The organo-chalcogens serves as both a chalcogen source for the nanoparticles and as a capping ligand for the nanoparticles.Type: GrantFiled: April 1, 2016Date of Patent: January 8, 2019Assignee: Nanoco Technologies Ltd.Inventors: Nathalie Gresty, James Harris, Ombretta Masala, Nigel Pickett, Laura Wylde, Christopher Newman
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Patent number: 10177262Abstract: Materials and methods for preparing Cu2XSnY4 nanoparticles, wherein X is Zn, Cd, Hg, Ni, Co, Mn or Fe and Y is S or Se, (CXTY) are disclosed herein. The nanoparticles can be used to make layers for use in thin film photovoltaic (PV) cells. The CXTY materials are prepared by a colloidal synthesis in the presence of labile organo-chalcogens. The organo-chalcogens serves as both a chalcogen source for the nanoparticles and as a capping ligand for the nanoparticles.Type: GrantFiled: March 13, 2014Date of Patent: January 8, 2019Assignee: Nanoco Technologies Ltd.Inventors: Nathalie Gresty, James Harris, Ombretta Masala, Nigel Pickett, Laura Wylde, Christopher Newman
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Publication number: 20180117184Abstract: Methods for detecting disease in a patient are disclosed. The methods involve administering to the patient a quantum dot-analyte conjugate, which includes an analyte that binds to a marker for the disease in the patient's gastrointestinal tract. The analyte is conjugated to a quantum dot having a characteristic emission wavelength. Using an endoscopic modality, a physician can illuminate portions of the patient's gastrointestinal tract and detect the presence of the marker based on emission of the quantum dot. Also disclosed are methods of predicting a response to a treatment in a patient.Type: ApplicationFiled: December 22, 2017Publication date: May 3, 2018Inventor: Nathalie Gresty
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Patent number: 9755101Abstract: A method of preparing Group XIII selenide nanoparticles comprises reacting a Group XIII ion source with a selenol compound. The nanoparticles have an MxSey Semiconductor core (where M is In or Ga) and an organic capping ligand attached to the core via a carbon-selenium bond. The selenol provides a source of selenium for incorporation into the semiconductor core and also provides the organic capping ligand. The nanoparticles are particularly suitable for solution-based methods of preparing semiconductor films.Type: GrantFiled: April 14, 2016Date of Patent: September 5, 2017Assignee: Nanoco Technologies Ltd.Inventors: Nathalie Gresty, Ombretta Masala, Christopher Newman, Stephen Whitelegg, Nigel Pickett
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Publication number: 20170233690Abstract: Quantum dot (QD) LEDs useful for plant, algael and photosynthetic bacterial growth applications. The QD LEDs utilizes a solid state LED (typically emitting blue or UV light) as the primary light source and one or more QD elements as a secondary light source that down-converts the primary light. The emission profile of the QD LED can be tuned to correspond to the absorbance spectrum of one or more photosynthetic pigments of the organism.Type: ApplicationFiled: February 8, 2017Publication date: August 17, 2017Inventors: Nigel Pickett, Imad Naasani, James Harris, Nathalie Gresty
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Publication number: 20170211779Abstract: A lighting fixture for promoting the development of animals comprises a backlight, such as an LED or an array of LEDs, and a series of one or more retractable, rotatable or interchangeable lenses comprising quantum dots, such that the color and/or color temperature of the light emitted by the lighting fixture can be altered and optimized during animal development. A lighting fixture adapted for use on an aquarium may be in the form factor of a standard fluorescent tube and comprise one or more LEDs and a quantum dot-containing film for down-converting at least a portion of the light emitted by the LEDs so as to provide optimum wavelengths for photosynthesis by aquarium plants while simultaneously providing attractive display lighting for the aquarium fish.Type: ApplicationFiled: January 20, 2017Publication date: July 27, 2017Inventors: Nigel Pickett, Nathalie Gresty, David James Price
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Publication number: 20170158959Abstract: Light-emitting materials are made from a porous light-emitting semiconductor having quantum dots (QDs) disposed within the pores. According to some embodiments, the QDs have diameters that are essentially equal in size to the width of the pores. The QDs are formed in the pores by exposing the porous semiconductor to gaseous QD precursor compounds, which react within the pores to yield QDs. According to certain embodiments, the pore size limits the size of the QDs produced by the gas-phase reactions. The QDs absorb light emitted by the light-emitting semiconductor material and reemit light at a longer wavelength than the absorbed light, thereby “down-converting” light from the semiconductor material.Type: ApplicationFiled: February 17, 2017Publication date: June 8, 2017Inventors: Nigel Pickett, Nathalie Gresty
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Patent number: 9574135Abstract: Light-emitting materials are made from a porous light-emitting semiconductor having quantum dots (QDs) disposed within the pores. According to some embodiments, the QDs have diameters that are essentially equal in size to the width of the pores. The QDs are formed in the pores by exposing the porous semiconductor to gaseous QD precursor compounds, which react within the pores to yield QDs. According to certain embodiments, the pore size limits the size of the QDs produced by the gas-phase reactions. The QDs absorb light emitted by the light-emitting semiconductor material and reemit light at a longer wavelength than the absorbed light, thereby “down-converting” light from the semiconductor material.Type: GrantFiled: August 20, 2014Date of Patent: February 21, 2017Assignee: Nanoco Technologies Ltd.Inventors: Nigel Pickett, Nathalie Gresty
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Publication number: 20170018690Abstract: Coated beads made of a primary matrix material and containing a population of quantum dot nanoparticles. Each bead has a multi-layer surface coating. The layers can be two or more distinct surface coating materials. The surface coating materials may be inorganic materials and/or polymeric materials. A method of preparing such particles is also described. The coated beads are useful for composite materials for applications such as light-emitting devices.Type: ApplicationFiled: July 27, 2016Publication date: January 19, 2017Inventors: Matthew Werner, Nathalie Gresty, Nigel Pickett, Paul Chalker, James Harris, Imad Naasani