Patents by Inventor Biwu Ma

Biwu Ma 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).

  • Methods of making metal halide perovskites
    Patent number: 11466040
    Abstract: Methods of making metal halide perovskites, including methods of making micro crystals of metal halide perovskites. The metal halide perovskites, including the micro crystals, may have a 0D structure. The metal halide perovskites may be a light emitting material.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: October 11, 2022
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Biwu Ma, Chenkun Zhou, Zhao Yuan
  • Organic Pigment Coating for Electronic Devices, Perovskite Solar Cells, and Methods
    Publication number: 20220285642
    Abstract: Methods of passivating a surface. The methods may include providing a mixture including a liquid and a derivative of quinacridone, applying the mixture to a first surface of a film that includes a metal halide perovskite, and annealing the film for a time and a temperature effective to convert the derivative of quinacridone to quinacridone. Composite materials and electronic devices also are provided.
    Type: Application
    Filed: March 2, 2021
    Publication date: September 8, 2022
    Inventors: Biwu Ma, Qingquan He
  • Luminescent metal halide perovskites and methods
    Patent number: 11312735
    Abstract: Nanoscale metal halide perovskites are provided. The nanoscale metal halide perovskites may have a 2D structure, a quasi-2D structure, or a 3D structure. Methods also are provided for making the nanoscale metal halide perovskites. The color emitted by the nanoscale metal halide perovskites may be tuned.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: April 26, 2022
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Biwu Ma, Zhao Yuan
  • Methods of making bandgap-tunable perovskite materials
    Patent number: 11242263
    Abstract: Bandgap-tunable perovskite compositions are provided having the formula CsPb(AxBy)3, wherein A and B are each a halogen. The mixed halide perovskite composition has a morphology which suppresses phase segregation to stabilize a tuned bandgap of the mixed halide perovskite composition. For example, the perovskite may be in the form of nanocrystals embedded in a non-perovskite matrix, which, for example, may have the formula Cs4Pb(AxBy)6, wherein A and B are each a halogen. Solar cells and light-emitting diodes comprising the mixed perovskite compositions are also provided.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: February 8, 2022
    Assignee: THE FLORIDA STATE UNIVERSITY RESEARCH FOUNDATION, INC
    Inventors: Hanwei Gao, Biwu Ma, Yichuan Ling, Xi Wang
  • Metal Halide Perovskites, Light-Emitting Diodes, and Methods
    Publication number: 20210347792
    Abstract: Metal halide perovskite crystals, composite materials that include metal halide perovskite crystals and a polymeric matrix material, devices that include metal halide perovskite crystals, and methods of forming metal halide perovskite crystals, composite materials, and devices. The devices may include optoelectronic devices, such as light-emitting diodes. The light-emitting diodes may emit red light.
    Type: Application
    Filed: July 20, 2021
    Publication date: November 11, 2021
    Inventors: Biwu Ma, Yu Tian
  • Organic-Inorganic Hybrid Perovskites, Devices, and Methods
    Publication number: 20210348053
    Abstract: Provided herein are organic-inorganic hybrid-perovskites, including metal halide perovskites having a 1D crystal structure. The metal halide perovskites may be luminescent. The metal halide perovskites may include a dopant, including an emitter dopant. Methods of forming metal halide perovskites, and devices including the metal halide perovskites also are provided.
    Type: Application
    Filed: July 26, 2021
    Publication date: November 11, 2021
    Inventors: Biwu Ma, Zhao Yuan, Chenkun Zhou
  • Bandgap-tunable perovskite materials and methods of making the same
    Patent number: 11155471
    Abstract: Bandgap-tunable perovskite compositions are provided having the formula CsPb(A)xBy)3, wherein A and B are each a halogen. The mixed halide perovskite composition has a morphology which suppresses phase segregation to stabilize a tuned bandgap of the mixed halide perovskite composition. For example, the perovskite may be in the form of nanocrystals embedded in a non-perovskite matrix, which, for example, may have the formula Cs4Pb(A)xBy)6, wherein A and B are each a halogen. Solar cells and light-emitting diodes comprising the mixed perovskite compositions are also provided.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: October 26, 2021
    Assignee: FLORIDA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
    Inventors: Hanwei Gao, Biwu Ma, Yichuan Ling, Xi Wang
  • Metal halide perovskites, light-emitting diodes, and methods
    Patent number: 11104695
    Abstract: Metal halide perovskite crystals, composite materials that include metal halide perovskite crystals and a polymeric matrix material, devices that include metal halide perovskite crystals, and methods of forming metal halide perovskite crystals, composite materials, and devices. The devices may include optoelectronic devices, such as light-emitting diodes. The light-emitting diodes may emit red light.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: August 31, 2021
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Biwu Ma, Yu Tian
  • Organic-inorganic hybrid perovskites, devices, and methods
    Patent number: 11078413
    Abstract: Provided herein are organic-inorganic hybrid-perovskites, including metal halide perovskites having a 1D crystal structure. The metal halide perovskites may be luminescent. The metal halide perovskites may include a dopant, including an emitter dopant. Methods of forming metal halide perovskites, and devices including the metal halide perovskites also are provided.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: August 3, 2021
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Biwu Ma, Zhao Yuan, Chenkun Zhou
  • Luminescent Metal Halide Perovskites and Methods
    Publication number: 20210115072
    Abstract: Nanoscale metal halide perovskites are provided. The nanoscale metal halide perovskites may have a 2D structure, a quasi-2D structure, or a 3D structure. Methods also are provided for making the nanoscale metal halide perovskites. The color emitted by the nanoscale metal halide perovskites may be tuned.
    Type: Application
    Filed: December 29, 2020
    Publication date: April 22, 2021
    Inventors: Biwu Ma, Zhao Yuan
  • Metal halide crystals having a nanotube structure and methods
    Patent number: 10947119
    Abstract: Provided are organic metal halide crystals having a 1D nanotube structure. The metal halide crystals may have a unit cell that includes two or more face-sharing metal halide dimers. The metal halide crystals also may include organic cations. Methods of forming metal halide crystals having a 1D nanotube structure also are provided.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: March 16, 2021
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Biwu Ma, Haoran Lin
  • Methods of Making Metal Halide Perovskites
    Publication number: 20210032273
    Abstract: Methods of making metal halide perovskites, including methods of making micro crystals of metal halide perovskites. The metal halide perovskites, including the micro crystals, may have a 0D structure. The metal halide perovskites may be a light emitting material.
    Type: Application
    Filed: October 20, 2020
    Publication date: February 4, 2021
    Inventors: Biwu Ma, Chenkun Zhou, Zhao Yuan
  • Methods of making metal halide perovskites
    Patent number: 10844083
    Abstract: Provided herein are methods of making metal halide perovskites, including methods of making bulk crystals or micro crystals. The metal halide perovskites may be a light emitting material.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: November 24, 2020
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Biwu Ma, Chenkun Zhou, Zhao Yuan
  • Organometal halide perovskit nanoplatelets, devices, and methods
    Patent number: 10774032
    Abstract: Provided herein are metal halide perovskite nanoplatelets, methods for making metal halide perovskite nanoplatelets, and devices and composite materials that include metal halide nanoperovskite nanoplatelets. The metal halide perovskite nanoplatelets may be stable at ambient temperature and pressure, thereby easing device fabrication.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: September 15, 2020
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Hanwei Gao, Biwu Ma, Yichuan Ling, Zhao Yuan
  • Methods of Making Bandgap-Tunable Perovskite Materials
    Publication number: 20200270141
    Abstract: Bandgap-tunable perovskite compositions are provided having the formula CsPb(AxBy)3, wherein A and B are each a halogen. The mixed halide perovskite composition has a morphology which suppresses phase segregation to stabilize a tuned bandgap of the mixed halide perovskite composition. For example, the perovskite may be in the form of nanocrystals embedded in a non-perovskite matrix, which, for example, may have the formula Cs4Pb(AxBy)6, wherein A and B are each a halogen. Solar cells and light-emitting diodes comprising the mixed perovskite compositions are also provided.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 27, 2020
    Inventors: Hanwei Gao, Biwu Ma, Yichuan Ling, Xi Wang
  • Luminescent Metal Halide Perovskites and Methods
    Publication number: 20200190124
    Abstract: Nanoscale metal halide perovskites are provided. The nanoscale metal halide perovskites may have a 2D structure, a quasi-2D structure, or a 3D structure. Methods also are provided for making the nanoscale metal halide perovskites. The color emitted by the nanoscale metal halide perovskites may be tuned.
    Type: Application
    Filed: February 25, 2020
    Publication date: June 18, 2020
    Inventors: Biwu Ma, Zhao Yuan
  • Luminescent metal halide perovskites and methods
    Patent number: 10611784
    Abstract: Nanoscale metal halide perovskites are provided. The nanoscale metal halide perovskites may have a 2D structure, a quasi-2D structure, or a 3D structure. Methods also are provided for making the nanoscale metal halide perovskites. The color emitted by the nanoscale metal halide perovskites may be tuned.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 7, 2020
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Biwu Ma, Zhao Yuan
  • Metal Halide Perovskites, Light-Emitting Diodes, and Methods
    Publication number: 20190256535
    Abstract: Metal halide perovskite crystals, composite materials that include metal halide perovskite crystals and a polymeric matrix material, devices that include metal halide perovskite crystals, and methods of forming metal halide perovskite crystals, composite materials, and devices. The devices may include optoelectronic devices, such as light-emitting diodes. The light-emitting diodes may emit red light.
    Type: Application
    Filed: February 19, 2019
    Publication date: August 22, 2019
    Inventors: Biwu Ma, Yu Tian
  • Metal Halide Crystals Having a Nanotube Structure and Methods
    Publication number: 20190106325
    Abstract: Provided are organic metal halide crystals having a 1D nanotube structure. The metal halide crystals may have a unit cell that includes two or more face-sharing metal halide dimers. The metal halide crystals also may include organic cations. Methods of forming metal halide crystals having a 1D nanotube structure also are provided.
    Type: Application
    Filed: October 9, 2018
    Publication date: April 11, 2019
    Inventors: Biwu Ma, Haoran Lin
  • Organic-Inorganic Hybrid Bulk Assemblies and Methods
    Publication number: 20190109291
    Abstract: Bulk assemblies are provided, which may have desirable photoluminescence quantum efficiencies. The bulk assemblies may include two or more metal halides, and a wide band gap organic network. The wide band gap organic network may include organic cations. The metal halides may be disposed in the wide band gap organic network. Light emitting composite materials also are provided.
    Type: Application
    Filed: October 10, 2018
    Publication date: April 11, 2019
    Inventors: Biwu Ma, Chenkun Zhou, Haoran Lin, Yu Tian