Patents by Inventor Sarah Schols

Sarah Schols 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: 9196853
    Abstract: The present invention is directed to solid state organic light emitting devices and to methods for triplet excitation scavenging in such devices. More particularly, the present invention relates to a method for substantially reducing a triplet population in a solid state organic material, the method comprising providing molecules exhibiting non-vertical triplet energy transfer in the solid state organic material or at a distance smaller than a triplet exciton diffusion length from the solid state organic material.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: November 24, 2015
    Assignees: KATHOLIEKE UNIVERSITEIT LEUVEN, K.U. LEUVEN R&D, IMEC
    Inventors: Sarah Schols, Paul Heremans, Andrey Kadashchuk
  • Publication number: 20120007024
    Abstract: The present invention is directed to solid state organic light emitting devices and to methods for triplet excitation scavenging in such devices. More particularly, the present invention relates to a method for substantially reducing a triplet population in a solid state organic material, the method comprising providing molecules exhibiting non-vertical triplet energy transfer in the solid state organic material or at a distance smaller than a triplet exciton diffusion length from the solid state organic material.
    Type: Application
    Filed: July 24, 2009
    Publication date: January 12, 2012
    Applicants: KATHOLIEKE UNIVERSITEIT LEUVEN, K.U. LEUVEN R&D, IMEC
    Inventors: Sarah Schols, Paul Heremans, Andrey Kadashchuk
  • Patent number: 7977672
    Abstract: A two-terminal organic light-emitting device structure is presented with low absorption losses and high current densities. Light generation and emission occur at a predetermined distance from any metallic contact, thereby reducing optical absorption losses. High current densities and thus high emitted light intensity are achieved by combining two types of conduction in one device: by combining space charge limited conduction and field-effect conduction or by combining ohmic conduction and field-effect conduction, thereby optimizing the current densities. This results in a very high local concentration of excitons and therefore a high light intensity, which can be important for applications such as organic lasers, and more in particular electrically pumped organic lasers.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: July 12, 2011
    Assignees: IMEC, Katholieke Universiteit Leuven
    Inventors: Sarah Schols, Stijn Verlaak, Paul Heremans
  • Publication number: 20100230668
    Abstract: A two-terminal organic light-emitting device structure is presented with low absorption losses and high current densities. Light generation and emission occur at a predetermined distance from any metallic contact, thereby reducing optical absorption losses. High current densities and thus high emitted light intensity are achieved by combining two types of conduction in one device: by combining space charge limited conduction and field-effect conduction or by combining ohmic conduction and field-effect conduction, thereby optimizing the current densities. This results in a very high local concentration of excitons and therefore a high light intensity, which can be important for applications such as organic lasers, and more in particular electrically pumped organic lasers.
    Type: Application
    Filed: May 27, 2010
    Publication date: September 16, 2010
    Applicants: IMEC, KATHOLIEKE UNIVERSITEIT LEUVEN
    Inventors: Sarah Schols, Stijn Verlaak, Paul Heremans
  • Patent number: 7768019
    Abstract: A two-terminal organic light-emitting device structure is presented with low absorption losses and high current densities. Light generation and emission occur at a predetermined distance from any metallic contact, thereby reducing optical absorption losses. High current densities and thus high emitted light intensity are achieved by combining two types of conduction in one device: by combining space charge limited conduction and field-effect conduction or by combining ohmic conduction and field-effect conduction, thereby optimizing the current densities. This results in a very high local concentration of excitons and therefore a high light intensity, which can be important for applications such as organic lasers, and more in particular electrically pumped organic lasers.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: August 3, 2010
    Assignees: IMEC, Katholieke Universiteit Leuven
    Inventors: Sarah Schols, Stijn Verlaak, Paul Heremans
  • Publication number: 20080006820
    Abstract: A two-terminal organic light-emitting device structure is presented with low absorption losses and high current densities. Light generation and emission occur at a predetermined distance from any metallic contact, thereby reducing optical absorption losses. High current densities and thus high emitted light intensity are achieved by combining two types of conduction in one device: by combining space charge limited conduction and field-effect conduction or by combining ohmic conduction and field-effect conduction, thereby optimizing the current densities. This results in a very high local concentration of excitons and therefore a high light intensity, which can be important for applications such as organic lasers, and more in particular electrically pumped organic lasers.
    Type: Application
    Filed: January 12, 2007
    Publication date: January 10, 2008
    Applicants: INTERUNIVERSITAIR MICROELEKTRONICA CENTRUM (IMEC), KATHOLLIEKE UNIVERSITEIT LEUVEN
    Inventors: Sarah Schols, Stijn Verlaak, Paul Heremans