Patents by Inventor William Pfenninger

William Pfenninger 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: 9660111
    Abstract: Luminescent materials and methods of forming such materials are described herein. A method of forming a luminescent material includes: (1) providing a source of A and X, wherein A is selected from at least one of elements of Group 1, and X is selected from at least one of elements of Group 17; (2) providing a source of B, wherein B is selected from at least one of elements of Group 14; (3) subjecting the source of A and X and the source of B to vacuum deposition to form a precursor layer over a substrate; (4) forming an encapsulation layer over the precursor layer to form an assembly of layers; and (5) heating the assembly of layers to a temperature Theat to form a luminescent material within the precursor layer.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: May 23, 2017
    Assignee: OMNIPV, INC.
    Inventors: Nemanja Vockic, Jian Jim Wang, William Pfenninger, John Kenney
  • Publication number: 20140199800
    Abstract: Luminescent materials and methods of forming such materials are described herein. A method of forming a luminescent material includes: (1) providing a source of A and X, wherein A is selected from at least one of elements of Group 1, and X is selected from at least one of elements of Group 17; (2) providing a source of B, wherein B is selected from at least one of elements of Group 14; (3) subjecting the source of A and X and the source of B to vacuum deposition to form a precursor layer over a substrate; (4) forming an encapsulation layer over the precursor layer to form an assembly of layers; and (5) heating the assembly of layers to a temperature Theat to form a luminescent material within the precursor layer.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 17, 2014
    Applicant: OMNIPV, INC.
    Inventors: Nemanja Vockic, Jian Jim Wang, William Pfenninger, John Kenney
  • Patent number: 8734681
    Abstract: Luminescent materials and methods of forming such materials are described herein. In one embodiment, a luminescent material has the formula: [AaSnbXxX?x?X?x?], where the luminescent material is polycrystalline; A is included in the luminescent material as a monovalent cation; X, X?, and X? are selected from fluorine, chlorine, bromine, and iodine; a is in the range of 1 to 5; b is in the range of 1 to 3; a sum of x, x?, and x? is in the range of 1 to 5; and at least X? is iodine, such that x?/(x+x?+x?)??.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: May 27, 2014
    Assignee: OMNIPV, Inc.
    Inventors: Nemanja Vockic, Jian Jim Wang, William Pfenninger, John Kenney
  • Publication number: 20130214205
    Abstract: Luminescent materials and methods of forming such materials are described herein. In one embodiment, a luminescent material has the formula: [AaSnbXxX?x?X?x?], where the luminescent material is polycrystalline; A is included in the luminescent material as a monovalent cation; X, X?, and X? are selected from fluorine, chlorine, bromine, and iodine; a is in the range of 1 to 5; b is in the range of 1 to 3; a sum of x, x?, and x? is in the range of 1 to 5; and at least X? is iodine, such that x?/(x+x?+x?)??.
    Type: Application
    Filed: April 2, 2013
    Publication date: August 22, 2013
    Inventors: Nemanja Vockic, Jian Jim Wang, William Pfenninger, John Kenney
  • Publication number: 20130217170
    Abstract: Luminescent materials and methods of forming such materials are described herein. In one embodiment, a luminescent material has the formula: [AaSnbXxX?x?X?x?][dopant], wherein A is included in the luminescent material as a monovalent cation; X, X?, and X? are selected from fluorine, chlorine, bromine, and iodine; a is in the range of 1 to 5; b is in the range of 1 to 3; a sum of x, x?, and x? is a+2b; and at least X? is iodine, such that x?/(a+2b)??.
    Type: Application
    Filed: April 2, 2013
    Publication date: August 22, 2013
    Inventors: Nemanja Vockic, Jian Jim Wang, William Pfenninger, John Kenney
  • Publication number: 20110180757
    Abstract: Luminescent materials and methods of forming such materials arc described herein. In one embodiment, a luminescent material has the formula: [AaSnbXxX?x?X?x?][dopant], wherein A is included in the luminescent material as a monovalent cation; X, X?, and X? are selected from fluorine, chlorine, bromine, and iodine; a is in the range of 1 to 5; b is in the range of 1 to 3; a sum of x, x?, and x? is a +2b; and at least X? is iodine, such that x?(a+2b)?1/5.
    Type: Application
    Filed: December 2, 2010
    Publication date: July 28, 2011
    Inventors: Nemanja Vockic, Jian Jim Wang, William Pfenninger, John Kenney
  • Publication number: 20080038494
    Abstract: Described herein are techniques for authenticating and identifying objects by detecting markings through turbid materials. In one embodiment, a container includes a substrate having an outer surface and an inner surface and including a turbid material. The container also includes a marking adjacent to the inner surface and including a luminescent material that exhibits photoluminescence in response to incident light directed on the outer surface. The photoluminescence has a quantum efficiency of at least 20 percent and a peak emission wavelength in the near infrared range.
    Type: Application
    Filed: March 20, 2007
    Publication date: February 14, 2008
    Inventors: John Midgley, William Pfenninger
  • Publication number: 20080014463
    Abstract: Luminescent materials and the use of such materials in anti-counterfeiting, inventory, photovoltaic, and other applications are described herein. In one embodiment, a luminescent material has the formula: [AaBbXxX?x?X?x?][dopants], wherein A is selected from at least one of elements of Group IA; B is selected from at least one of elements of Group VA, elements of Group IB, elements of Group IIB, elements of Group IIIB, elements of Group IVB, and elements of Group VB; X, X?, and X? are independently selected from at least one of elements of Group VIIB; the dopants include electron acceptors and electron donors; a is in the range of 1 to 9; b is in the range of 1 to 5; and x, x?, and x? have a sum in the range of 1 to 9. The luminescent material exhibits photoluminescence having: (a) a quantum efficiency of at least 20 percent; (b) a spectral width no greater than 100 nm at Full Width at Half Maximum; and (c) a peak emission wavelength in the near infrared range.
    Type: Application
    Filed: March 21, 2007
    Publication date: January 17, 2008
    Inventors: John Varadarajan, Mirna Resan, Fanxin Wu, William Pfenninger, Nemanja Vockic, John Kenney
  • Publication number: 20050058416
    Abstract: The invention relates to an optical device. The optical device comprises a waveguide core and a nanocomposite material optically coupled to the waveguide core. The nanocomposite material includes a plurality of quantum dots. The nanocomposite material has a nonlinear index of refraction ? that is at least 10?9 cm2/W when irradiated with an activation light having a wavelength ? between approximately 3×10?5 cm and 2×10?4 cm.
    Type: Application
    Filed: July 16, 2004
    Publication date: March 17, 2005
    Inventors: Howard Hoon Lee, Alan Chin, William Pfenninger
  • Publication number: 20050058415
    Abstract: The invention relates to an optical device. The optical device comprises a waveguide core and a nanocomposite material optically coupled to the waveguide core. The nanocomposite material includes a plurality of quantum dots. The nanocomposite material has a nonlinear index of refraction ? that is at least 10?9 cm2/W when irradiated with an activation light having a wavelength ? between approximately 3×10?5 cm and 2×10?4 cm.
    Type: Application
    Filed: July 16, 2004
    Publication date: March 17, 2005
    Inventors: Howard Wing Lee, Alan Chin, William Pfenninger