Patents by Inventor Nigel Pickett

Nigel Pickett 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).

  • Patent number: 9567520
    Abstract: A method of producing nanoparticles comprises effecting conversion of a nanoparticle precursor composition to the material of the nanoparticles. The precursor composition comprises a first precursor species containing a first ion to be incorporated into the growing nanoparticles and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticles. The conversion is effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticles.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: February 14, 2017
    Assignee: Nanoco Technologies Ltd.
    Inventors: Paul O'Brien, Nigel Pickett
  • Publication number: 20170022627
    Abstract: A method of producing nanoparticles comprises effecting conversion of a molecular cluster compound to the material of the nanoparticles. The molecular cluster compound comprises a first ion and a second ion to be incorporated into the growing nanoparticles. The conversion can be effected in the presence of a second molecular cluster compound comprising a third ion and a fourth ion to be incorporated into the growing nanoparticles, under conditions permitting seeding and growth of the nanoparticles via consumption of a first molecular cluster compound.
    Type: Application
    Filed: July 22, 2016
    Publication date: January 26, 2017
    Inventors: Paul O'Brien, Nigel Pickett
  • Publication number: 20170018690
    Abstract: 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: Application
    Filed: July 27, 2016
    Publication date: January 19, 2017
    Inventors: Matthew Werner, Nathalie Gresty, Nigel Pickett, Paul Chalker, James Harris, Imad Naasani
  • Patent number: 9548009
    Abstract: An illuminated sign has a primary light source in spaced apart relation to a transparent or translucent substrate having quantum dot phosphors printed or coated thereon. The primary light source may be a blue LED, a white LED or an LED having a significant portion of its emission in the ultraviolet region of the spectrum. The LED may be a backlight for the transparent or translucent substrate and/or an edge light, a down light or an up light.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: January 17, 2017
    Assignee: Nanoco Technologies Ltd.
    Inventors: Nigel Pickett, Ombretta Masala, James Harris, Nathalie Gresty
  • Patent number: 9543481
    Abstract: The present invention relates to a primary particle comprised of a primary matrix material containing a population of semiconductor nanoparticles, wherein each primary particle further comprises an additive to enhance the physical, chemical and/or photo-stability of the semiconductor nanoparticles. A method of preparing such particles is described. Composite materials and light emitting devices incorporating such primary particles are also described.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: January 10, 2017
    Assignee: Nanoco Technologies Ltd.
    Inventors: Nigel Pickett, Imad Naasani, James Harris
  • Publication number: 20160359093
    Abstract: Embodiments of the present invention relate to a formulation for use in the fabrication of a light-emitting device, the formulation including a population of semiconductor nanoparticles incorporated into a plurality of discrete microbeads comprising an optically transparent medium, the nanoparticle-containing medium being embedded in a host light-emitting diode encapsulation medium. A method of preparing such a formulation is described. There is further provided a light-emitting device including a primary light source in optical communication with such a formulation and a method of fabricating the same.
    Type: Application
    Filed: August 19, 2016
    Publication date: December 8, 2016
    Inventors: Nigel Pickett, James Harris
  • Patent number: 9466743
    Abstract: Nanoparticles containing IUPAC group 11 ions, group 13 ions and sulfur ions are synthesized by adding metal salts and an alkanethiol in an organic solvent and promoting the reaction by applying heat. Nanoparticles are formed at temperatures as low as 200° C. The nanoparticles may be thermally annealed for a certain amount of time at a temperature lower than the reaction temperature (usually ˜40° C. lower) to improve the topology and narrow the size distribution. After the reaction is complete, the nanoparticles may be isolated by the addition of a non-solvent and re-dispersed in organic solvents including toluene, chloroform and hexane to form a nanoparticle ink. Additives may be incorporated in the reaction solution to tailor the final ink viscosity.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: October 11, 2016
    Assignee: Nanoco Technologies Ltd.
    Inventors: James Harris, Christopher Newman, Ombretta Masala, Laura Wylde, Nigel Pickett
  • Patent number: 9461215
    Abstract: Embodiments of the present invention relate to a formulation for use in the fabrication of a light-emitting device, the formulation including a population of semiconductor nanoparticles incorporated into a plurality of discrete microbeads comprising an optically transparent medium, the nanoparticle-containing medium being embedded in a host light-emitting diode encapsulation medium. A method of preparing such a formulation is described. There is further provided a light-emitting device including a primary light source in optical communication with such a formulation and a method of fabricating the same.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: October 4, 2016
    Assignee: Nanoco Technologies, Ltd.
    Inventors: Nigel Pickett, James Harris
  • Patent number: 9443998
    Abstract: Disclosed herein are 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: Grant
    Filed: March 13, 2014
    Date of Patent: September 13, 2016
    Assignee: Nanoco Technologies Ltd.
    Inventors: Matthew Werner, Nathalie Gresty, Nigel Pickett, Paul Chalker, James Harris, Imad Naasani
  • Publication number: 20160233373
    Abstract: 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: Application
    Filed: April 14, 2016
    Publication date: August 11, 2016
    Inventors: Nathalie Gresty, Ombretta Masala, Christopher Newman, Stephen Whitelegg, Nigel Pickett
  • Publication number: 20160218232
    Abstract: 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: Application
    Filed: April 1, 2016
    Publication date: July 28, 2016
    Inventors: Nathalie Gresty, James Harris, Ombretta Masala, Nigel Pickett, Laura Wylde, Christopher Newman
  • Publication number: 20160194507
    Abstract: A method of heat transfer printing using quantum dots is described. The method can be used to form an image using quantum dots on a substrate that is not easily printed using conventional printing techniques. Also described is a quantum dot ink formulation for heat transfer printing. The methods and materials can be used for anti-counterfeiting applications.
    Type: Application
    Filed: March 14, 2016
    Publication date: July 7, 2016
    Inventors: Nathalie Gresty, Nigel Pickett
  • Patent number: 9359222
    Abstract: Materials and methods for preparing Cu2ZnSnS4 (CZTS) layers for use in thin film photovoltaic (PV) cells are disclosed herein. The CZTS materials are nanoparticles prepared by a colloidal synthesis in the presence of a labile organothiol. The organothiol serves as both a sulphur source and as a capping ligand for the nanoparticles.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: June 7, 2016
    Assignee: Nanoco Technologies Ltd.
    Inventors: Nathalie Gresty, Ombretta Masala, James Harris, Nigel Pickett
  • Patent number: 9359202
    Abstract: 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: Grant
    Filed: July 5, 2013
    Date of Patent: June 7, 2016
    Assignee: Nanoco Technologies Ltd
    Inventors: Nathalie Gresty, Ombretta Masala, Christopher Newman, Stephen Whitelegg, Nigel Pickett
  • Publication number: 20160152892
    Abstract: A method of producing nanoparticles comprises effecting conversion of a nanoparticle precursor composition to the material of the nanoparticles. The precursor composition comprises a first precursor species containing a first ion to be incorporated into the growing nanoparticles and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticles. The conversion is effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticles.
    Type: Application
    Filed: October 26, 2015
    Publication date: June 2, 2016
    Inventors: Paul O'Brien, Nigel Pickett
  • Patent number: 9343301
    Abstract: A process is disclosed for producing quantum dots (QDs) by reacting one or more core semiconductor precursors with phosphine in the presence of a molecular cluster compound. The core semiconductor precursor(s) provides elements that are incorporated into the QD core semiconductor material. The core semiconductor also incorporates phosphorus, which is provided by the phosphine. The phosphine may be provided to the reaction as a gas or may, alternatively, be provided as an adduct of another material.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: May 17, 2016
    Assignee: Nanoco Technologies Ltd.
    Inventors: James Harris, Nigel Pickett, Abdur-Rehman Irshad, Martin Davis, Paul Glarvey, Nathalie Gresty, Heather Yates
  • Patent number: 9251922
    Abstract: A process for producing nanoparticles incorporating ions selected from groups 13, 16, and 11 or 12 of the periodic table is described. The process comprises effecting conversion of a nanoparticle precursor composition comprising said group 13, 16, and 11 or 12 ions to the material of the nanoparticles in the presence of a selenol compound. A process for fabricating a thin film comprising nanoparticles incorporating ions selected from groups 13, 16, and 11 or 12 of the periodic table is also described, as well as a process for producing a printable ink formulation comprising said nanoparticles.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: February 2, 2016
    Assignee: Nanoco Technologies, Ltd.
    Inventors: Nigel Pickett, James Harris
  • Publication number: 20150376026
    Abstract: Materials and methods for preparing Cu2ZnSnS4 (CZTS) layers for use in thin film photovoltaic (PV) cells are disclosed herein. The CZTS materials are nanoparticles prepared by a colloidal synthesis in the presence of a labile organothiol. The organothiol serves as both a sulphur source and as a capping ligand for the nanoparticles.
    Type: Application
    Filed: September 2, 2015
    Publication date: December 31, 2015
    Inventors: Nathalie Gresty, Ombretta Masala, James Harris, Nigel Pickett
  • Patent number: 9206054
    Abstract: Materials and methods for preparing Cu2ZnSnS4 (CZTS) layers for use in thin film photovoltaic (PV) cells are disclosed herein. The CZTS materials are nanoparticles prepared by a colloidal synthesis in the presence of a labile organothiol. The organothiol serves as both a sulphur source and as a capping ligand for the nanoparticles.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 8, 2015
    Assignee: Nanoco Technologies Ltd.
    Inventors: Nathalie Gresty, Ombretta Masala, James Harris, Nigel Pickett
  • Patent number: 9196767
    Abstract: A process for producing copper selenide nanoparticles by effecting conversion of a nanoparticle precursor composition comprising copper and selenide ions to the material of the copper selenide nanoparticles in the presence of a selenol compound. Copper selenide-containing films and CIGS semiconductor films produced using copper selenide as a fluxing agent are also disclosed.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: November 24, 2015
    Assignee: Nanoco Technologies Ltd.
    Inventors: James Harris, Nathalie Gresty, Ombretta Masala, Nigel Pickett