Patents by Inventor Tze Chien Sum

Tze Chien Sum 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).

  • Perovskite core-shell nanocrystals
    Patent number: 10538540
    Abstract: Provided is a nanocrystal comprising a core comprised in a shell, wherein the core comprises a first material of a perovskite structure comprising a first organic cation not exceeding a molar weight of about 45 g/mol, a first divalent metal and a first counter anion, and, wherein the shell comprises a second material of a perovskite structure comprising a second organic cation having a molar weight between about 74 g/mol and about 187 g/mol, optionally the first organic cation, a second divalent metal and a second counter anion. Provided is further a matrix having the nanocrystal as defined above encapsulated therein.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: January 21, 2020
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Tze Chien Sum, Weiqiang Chen, Subodh Gautam Mhaisalkar, Nripan Mathews, Sjoerd Antonius Veldhuis, Saikat Bhaumik
  • Emission source and method of forming the same
    Patent number: 9966726
    Abstract: In various embodiments, an emission source may be provided. The emission source may also include a gain medium including a halide semiconductor material. The emission source may further include a pump source configured to provide energy to the gain medium.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: May 8, 2018
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Guichuan Xing, Nripan Mathews, Subodh Gautam Mhaisalkar, Tze Chien Sum
  • Emission source and method of forming the same
    Patent number: 9899793
    Abstract: In various embodiments, an emission source may be provided. The emission source may also include a gain medium including a halide semiconductor material. The emission source may further include a pump source configured to provide energy to the gain medium. The halide semiconductor material may include a lead-free perovskite material.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: February 20, 2018
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Guichuan Xing, Nripan Mathews, Subodh Gautam Mhaisalkar, Tze Chien Sum
  • PEROVSKITE CORE-SHELL NANOCRYSTALS
    Publication number: 20180002354
    Abstract: Provided is a nanocrystal comprising a core comprised in a shell, wherein the core comprises a first material of a perovskite structure comprising a first organic cation not exceeding a molar weight of about 45 g/mol, a first divalent metal and a first counter anion, and, wherein the shell comprises a second material of a perovskite structure comprising a second organic cation having a molar weight between about 74 g/mol and about 187 g/mol, optionally the first organic cation, a second divalent metal and a second counter anion. Provided is further a matrix having the nanocrystal as defined above encapsulated therein.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Applicant: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Tze Chien SUM, Weiqiang CHEN, Subodh Gautam MHAISALKAR, Nripan MATHEWS, Sjoerd Antonius VELDHUIS, Saikat BHAUMIK
  • EMISSION SOURCE AND METHOD OF FORMING THE SAME
    Publication number: 20170012404
    Abstract: In various embodiments, an emission source may be provided. The emission source may also include a gain medium including a halide semiconductor material. The emission source may further include a pump source configured to provide energy to the gain medium. The halide semiconductor material may include a lead-free perovskite material.
    Type: Application
    Filed: September 23, 2016
    Publication date: January 12, 2017
    Inventors: Guichuan Xing, Nripan Mathews, Subodh Gautam Mhaisalkar, Tze Chien Sum
  • SPINTRONIC MATERIALS AND SPINTRONIC DEVICES INCLUDING THE SPINTRONIC MATERIALS
    Publication number: 20160222039
    Abstract: The invention relates to spintronic materials, and in particular, to spintronic materials comprised of halide perovskite compounds. In various embodiments, the spintronic material comprises a solution processed halide perovskite compound. A method for forming the solution processed halide perovskite compound is also disclosed.
    Type: Application
    Filed: January 29, 2016
    Publication date: August 4, 2016
    Applicant: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Tze Chien SUM, David GIOVANNI, Nripan MATHEWS, Subodh Gautam MHAISALKAR
  • EMISSION SOURCE AND METHOD OF FORMING THE SAME
    Publication number: 20150071319
    Abstract: In various embodiments, an emission source may be provided. The emission source may also include a gain medium including a halide semiconductor material. The emission source may further include a pump source configured to provide energy to the gain medium.
    Type: Application
    Filed: September 12, 2014
    Publication date: March 12, 2015
    Inventors: Guichuan Xing, Nripan Mathews, Subodh Mhaisalkar, Tze Chien Sum