Patents by Inventor Sungjee Kim

Sungjee Kim 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: 7964279
    Abstract: Disclosed herein are a nanocrystal-polydimethylsiloxane composite and a method for preparing the same. More specifically, provided are a nanocrystal-polydimethylsiloxane composite in which one or more polydimethylsiloxane derivatives having urea cross-links are bound to the surface of a nanocrystal, and a method for preparing the same. The nanocrystal-polydimethylsiloxane composite comprises optically transparent polydimethylsiloxane with remarkably high durability, thus imparting improved luminescence efficiency and product reliability to various electronic devices, when applied as a luminescent material to the electronic devices.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: June 21, 2011
    Assignees: Samsung Electronics Co., Ltd., Pohang University of Science and Technology Academy-Industry Foundation
    Inventors: Sungjee Kim, JinSik Lee, Songjoo Oh
  • Publication number: 20110012061
    Abstract: A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantially confined to the overcoating.
    Type: Application
    Filed: September 22, 2010
    Publication date: January 20, 2011
    Applicant: Massachusetts Institute of Technology
    Inventors: Sungjee Kim, Moungi G. Bawendi
  • Patent number: 7825405
    Abstract: A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantially confined to the overcoating.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: November 2, 2010
    Assignee: Massachusetts Institute of Technology
    Inventors: Sungjee Kim, Moungi G. Bawendi
  • Publication number: 20100102277
    Abstract: A semiconductor nanocrystal associated with a polydentate ligand. The polydentate ligand stabilizes the nanocrystal.
    Type: Application
    Filed: September 10, 2009
    Publication date: April 29, 2010
    Inventors: Moungi G. Bawendi, Sungjee Kim, Nathan E. Stott
  • Publication number: 20090301564
    Abstract: A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantially confined to the overcoating.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 10, 2009
    Applicant: Massachusetts Institute of Technology
    Inventors: Sungjee Kim, Moungi G. Bawendi
  • Publication number: 20090281265
    Abstract: Disclosed herein are a nanocrystal-polydimethylsiloxane composite and a method for preparing the same. More specifically, provided are a nanocrystal-polydimethylsiloxane composite in which one or more polydimethylsiloxane derivatives having urea cross-links are bound to the surface of a nanocrystal, and a method for preparing the same. The nanocrystal-polydimethylsiloxane composite comprises optically transparent polydimethylsiloxane with remarkably high durability, thus imparting improved luminescence efficiency and product reliability to various electronic devices, when applied as a luminescent material to the electronic devices.
    Type: Application
    Filed: October 29, 2008
    Publication date: November 12, 2009
    Applicants: Samsung Electronics Co, Ltd, Pohang University of Science & Technologies Academy-Industry Foundation
    Inventors: Sungjee Kim, JinSik Lee, Songjoo Oh
  • Publication number: 20090267051
    Abstract: A method for preparing a quantum dot-inorganic matrix composite includes preparing an inorganic matrix precursor solution containing one or more quantum dot precursors, spin-coating the precursor solution on a substrate to form an inorganic matrix thin film, and heating the inorganic matrix thin film to form an inorganic matrix, while growing the quantum dot precursors into quantum dots in the inorganic matrix, thereby yielding a quantum dot-inorganic matrix composite. The quantum dot-inorganic matrix composite thus obtained has a structure in which the quantum dots have a high efficiency and are densely filled in an inorganic matrix. The quantum dot-inorganic matrix composites can be prepared using a low temperature process, and can be used for various displays and electronic device material applications.
    Type: Application
    Filed: January 12, 2009
    Publication date: October 29, 2009
    Applicants: Samsung Electronics Co., Ltd, Pohang University of Science and Technology Academy-Industry Foundation
    Inventors: Sungjee Kim, JinSik Lee, SongJoo Oh
  • Patent number: 7601424
    Abstract: A semiconductor nanocrystal associated with a polydentate ligand. The polydentate ligand stabilizes the nanocrystal.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: October 13, 2009
    Assignee: Massachusetts Institute of Technology
    Inventors: Moungi G. Bawendi, Sungjee Kim, Nathan E. Stott
  • Patent number: 7390568
    Abstract: A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantially confined to the overcoating.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: June 24, 2008
    Assignee: Massachusetts Institute of Technology
    Inventors: Sungjee Kim, Moungi G. Bawendi
  • Patent number: 7374824
    Abstract: Tellurium-containing nanocrystallites are produced by injection of a precursor into a hot coordinating solvent, followed by controlled growth and annealing. Nanocrystallites may include CdTe, ZnTe, MgTe, HgTe, or alloys thereof. The nanocrystallites can photoluminesce with quantum efficiencies as high as 70%.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: May 20, 2008
    Assignee: Massachusetts Institute of Technology
    Inventors: Moungi G. Bawendi, Frederic V. Mikulec, Sungjee Kim
  • Publication number: 20070160838
    Abstract: A semiconductor nanocrystal associated with a polydentate ligand. The polydentate ligand stabilizes the nanocrystal.
    Type: Application
    Filed: October 6, 2006
    Publication date: July 12, 2007
    Applicant: Massachusetts Institute of Technology
    Inventors: Moungi Bawendi, Sungjee Kim, Nathan Stott
  • Patent number: 7181266
    Abstract: A lymphatic system can be imaged with emissive semiconductor nanocrystals, for example, in the near infrared.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: February 20, 2007
    Assignees: Massachusetts Institute of Technology, Beth Isreal Deaconess Medical Center, Inc.
    Inventors: John V. Frangioni, Moungi G. Bawendi, Sungjee Kim, Yong Taik Lim
  • Patent number: 7160613
    Abstract: A semiconductor nanocrystal associated with a polydentate ligand. The polydentate ligand stabilizes the nanocrystal.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: January 9, 2007
    Assignee: Massachusetts Institute of Technology
    Inventors: Moungi G. Bawendi, Sungjee Kim, Nathan E. Stott
  • Publication number: 20060182970
    Abstract: Tellurium-containing nanocrystallites are produced by injection of a precursor into a hot coordinating solvent, followed by controlled growth and annealing. Nanocrystallites may include CdTe, ZnTe, MgTe, HgTe, or alloys thereof. The nanocrystallites can photoluminesce with quantum efficiencies as high as 70%.
    Type: Application
    Filed: April 7, 2006
    Publication date: August 17, 2006
    Inventors: Moungi Bawendi, Frederic Mikulec, Sungjee Kim
  • Patent number: 7060243
    Abstract: Tellurium-containing nanocrystallites are produced by injection of a precursor into a hot coordinating solvent, followed by controlled growth and annealing. Nanocrystallites may include CdTe, ZnTe, MgTe, HgTe, or alloys thereof. The nanocrystallites can photoluminesce with quantum efficiencies as high as 70%.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: June 13, 2006
    Assignee: Massachusetts Institute of Technology
    Inventors: Moungi G. Bawendi, Frederic V. Mikulec, Sungjee Kim
  • Publication number: 20050031888
    Abstract: Tellurium-containing nanocrystallites are produced by injection of a precursor into a hot coordinating solvent, followed by controlled growth and annealing. Nanocrystallites may include CdTe, ZnTe, MgTe, HgTe, or alloys thereof. The nanocrystallites can photoluminesce with quantum efficiencies as high as 70%.
    Type: Application
    Filed: June 9, 2003
    Publication date: February 10, 2005
    Inventors: Moungi Bawendi, Frederic Mikulec, Sungjee Kim
  • Publication number: 20050020922
    Abstract: Vasculature can be imaged with emissive semiconductor nanocrystals, for example, in the near infrared.
    Type: Application
    Filed: February 6, 2004
    Publication date: January 27, 2005
    Inventors: John Frangioni, Moungi Bawendi, Sungjee Kim, Yong Lim
  • Publication number: 20050020923
    Abstract: A lymphatic system can be imaged with emissive semiconductor nanocrystals, for example, in the near infrared.
    Type: Application
    Filed: February 6, 2004
    Publication date: January 27, 2005
    Inventors: John Frangioni, Moungi Bawendi, Sungjee Kim, Yong Lim
  • Publication number: 20040110002
    Abstract: A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantially confined to the overcoating.
    Type: Application
    Filed: August 12, 2003
    Publication date: June 10, 2004
    Inventors: Sungjee Kim, Moungi G. Bawendi
  • Publication number: 20040091710
    Abstract: A semiconductor nanocrystal associated with a polydentate ligand. The polydentate ligand stabilizes the nanocrystal.
    Type: Application
    Filed: August 15, 2003
    Publication date: May 13, 2004
    Inventors: Moungi G. Bawendi, Sungjee Kim, Nathan E. Stott