Patents by Inventor Neil C. Greenham

Neil C. Greenham 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).

  • Electroluminescent device
    Patent number: 11362298
    Abstract: Broadly speaking, embodiments of the present invention provide a solid state light-emitting device and a method of manufacturing the solid state light-emitting device. The method comprises preparing a thin layer of semiconducting perovskite nanoparticles embedded in a matrix or blend of a material that has a wider band gap than the semiconducting perovskite nanoparticles. In embodiments, the method comprises blending a solution of a semiconducting perovskite material or a precursor therefor with a solution of a material that has a wider band gap than the semiconducting perovskite material or a precursor therefor followed by removal of the solvent from the mixture thus formed, to give the semiconducting perovskite nanoparticles embedded in a matrix or blend of the material that has a wider band gap than the semiconducting perovskite nanoparticles.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: June 14, 2022
    Assignees: CAMBRIDGE ENTERPRISE LIMITED, KING ABDULAZIZ CITY FOR SCIENCE & TECHNOLOGY
    Inventors: Richard Henry Friend, Zhi Kuang Tan, Guangru Li, Dawei Di, Neil C. Greenham
  • ELECTROLUMINESCENT DEVICE
    Publication number: 20200227667
    Abstract: Broadly speaking, embodiments of the present invention provide a solid state light-emitting device and a method of manufacturing the solid state light-emitting device. The method comprises preparing a thin layer of semiconducting perovskite nanoparticles embedded in a matrix or blend of a material that has a wider band gap than the semiconducting perovskite nanoparticles. In embodiments, the method comprises blending a solution of a semiconducting perovskite material or a precursor therefor with a solution of a material that has a wider band gap than the semiconducting perovskite material or a precursor therefor followed by removal of the solvent from the mixture thus formed, to give the semiconducting perovskite nanoparticles embedded in a matrix or blend of the material that has a wider band gap than the semiconducting perovskite nanoparticles.
    Type: Application
    Filed: March 25, 2020
    Publication date: July 16, 2020
    Inventors: Richard Henry Friend, Zhi Kuang Tan, Guangru Li, Dawei Di, Neil C. Greenham
  • Electroluminescent device
    Patent number: 10636993
    Abstract: Broadly speaking, embodiments of the present invention provide a solid state light-emitting device and a method of manufacturing the solid state light-emitting device. The method comprises preparing a thin layer of semiconducting perovskite nanoparticles embedded in a matrix or blend of a material that has a wider band gap than the semiconducting perovskite nanoparticles. In embodiments, the method comprises blending a solution of a semiconducting perovskite material or a precursor therefor with a solution of a material that has a wider band gap than the semiconducting perovskite material or a precursor therefor followed by removal of the solvent from the mixture thus formed, to give the semiconducting perovskite nanoparticles embedded in a matrix or blend of the material that has a wider band gap than the semiconducting perovskite nanoparticles.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: April 28, 2020
    Assignees: CAMBRIDGE ENTERPRISE LIMITED, KING ABDULAZIZ CITY FOR SCIENCE & TECHNOLOGY
    Inventors: Richard Friend, Zhi Kuang Tan, Guangru Li, Dawei Di, Neil C. Greenham
  • ELECTROLUMINESCENT DEVICE
    Publication number: 20170324057
    Abstract: Broadly speaking, embodiments of the present invention provide a solid state light-emitting device and a method of manufacturing the solid state light-emitting device. The method comprises preparing a thin layer of semiconducting perovskite nanoparticles embedded in a matrix or blend of a material that has a wider band gap than the semiconducting perovskite nanoparticles. In embodiments, the method comprises blending a solution of a semiconducting perovskite material or a precursor therefor with a solution of a material that has a wider band gap than the semiconducting perovskite material or a precursor therefor followed by removal of the solvent from the mixture thus formed, to give the semiconducting perovskite nanoparticles embedded in a matrix or blend of the material that has a wider band gap than the semiconducting perovskite nanoparticles.
    Type: Application
    Filed: November 20, 2015
    Publication date: November 9, 2017
    Inventors: Richard Friend, Zhi Kuang Tan, Li Guangru, Di Dawei, Neil C. Greenham
  • Polymers for electroluminescent devices
    Patent number: 5514878
    Abstract: This invention provides semiconductive conjugated polymers incorporating electron-withdrawing groups for use in electroluminescent devices, methods for their manufacture, and electroluminescent devices incorporating the polymers. The electron-withdrawing group is conjugatively linked to the polymer chain and is selected so that the polymer exhibits electroluminesence upon application of an electric field to a layer thereof.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: May 7, 1996
    Inventors: Andrew B. Holmes, Richard H. Friend, Stephen C. Moratti, Derek R. Baigent, Donald C. Bradley, Raoul Cervini, Neil C. Greenham, Peter J. Hamer