Patents by Inventor Z. Valy Vardeny

Z. Valy 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).

  • Organic light-emitting devices using spin-dependent processes
    Patent number: 7682707
    Abstract: The maximum luminous efficiency of organic light-emitting materials is increased through spin-dependent processing. The technique is applicable to all electro-luminescent processes in which light is produced by singlet exciton decay, and all devices which use such effects, including LEDs, super-radiant devices, amplified stimulated emission devices, lasers, other optical microcavity devices, electrically pumped optical amplifiers, and phosphorescence (Ph) based light emitting devices. In preferred embodiments, the emissive material is doped with an impurity, or otherwise modified, to increase the spin-lattice relaxation rate (i.e., decrease the spin-lattice time), and hence raise the efficiency of the device. The material may be a polymer, oligomer, small molecule, single crystal, molecular crystal, or fullerene. The impurity is preferably a magnetic or paramagnetic substance.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: March 23, 2010
    Assignee: University of Utah
    Inventors: Z. Valy Vardeny, Markus Wohlgenannt
  • Structured organic materials and devices using low-energy particle beams
    Patent number: 6943359
    Abstract: Organic materials exposed to an electron beam for patterning a substrate (1) to make an optoelectronic organic device which includes a source, a drain, gate dielectric layer (4), and a substrate for emitting light.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: September 13, 2005
    Assignee: University of Utah
    Inventors: Z. Valy Vardeny, Sergey Li, Matthew C. Delong, Xiaomei Jiang
  • Structured organic materials and devices using low-energy particle beams
    Publication number: 20040113098
    Abstract: Organic materials exposed to an electron beam for patterning a substrate (1) to make an optoelectronic organic device which includes a source, a drain, gate dielectric layer (4), and a substrate for emitting light.
    Type: Application
    Filed: February 5, 2004
    Publication date: June 17, 2004
    Inventors: Z Valy Vardeny, Sergey Li, Matthew C Delong, Xiaomei Jiang
  • Performance of organic light-emitting devices using spin-dependent processes
    Publication number: 20020093006
    Abstract: The maximum luminous efficiency of organic light-emitting materials is increased through spin-dependent processing. The technique is applicable to all electro-luminescent processes in which light is produced by singlet exciton decay, and all devices which use such effects, including LEDs, super-radiant devices, amplified stimulated emission devices, lasers, other optical microcavity devices, electrically pumped optical amplifiers, and phosphorescence (Ph) based light emitting devices. In preferred embodiments, the emissive material is doped with an impurity, or otherwise modified, to increase the spin-lattice relaxation rate (i.e., decrease the spin-lattice time), and hence raise the efficiency of the device. The material may be a polymer, oligomer, small molecule, single crystal, molecular crystal, or fullerene. The impurity is preferably a magnetic or paramagnetic substance.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 18, 2002
    Inventors: Z. Valy Vardeny, Markus Wohlgenannt