Patents by Inventor Xiaomei Jiang

Xiaomei Jiang 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: 10615342
    Abstract: The fabrication and characterization of large scale inverted organic solar array fabricated using all-spray process is disclosed. Solar illumination has been demonstrated to improve transparent solar photovoltaic devices. The technology using SAM has potential to revolute current silicon-based photovoltaic technology by providing a complete solution processable manufacturing process. The semi-transparent property of the solar module allows for applications on windows and windshields. The inventive arrays are more efficient than silicon solar cells in artificial light environments, permitting use of the arrays in powering microelectromechanical systems and in integration with microelectromechanical systems.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: April 7, 2020
    Assignee: University of South Florida
    Inventors: Jason Lewis, Xiaomei Jiang
  • Patent number: 10084103
    Abstract: A thin film and a method of making a thin film. The thin film comprises a patterned substrate, a smooth film of electric field tuned quantum dots solution positioned on the patterned substrate, and a thin layer of metal positioned on the thin film. The method begins by drop-casting a quantum dots solution onto a patterned substrate to create a thin film. While the quantum dots solution is drying, a linearly increasing electric filed is applied. The thin film is then placed in a deposition chamber and a thin layer of metal is deposited onto the thin film. Also included are a method of measuring the photoinduced charge transfer (PCT) rate in a quantum dot nanocomposite film and methods of forming a Shottky barrier on a transparent ITO electrode of a quantum dot film.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: September 25, 2018
    Assignee: University of South Florida
    Inventors: Jason Lewis, Xiaomei Jiang
  • Patent number: 9722180
    Abstract: An all-spray fabrication method for large scale inverted organic solar array is provided. Zinc oxide sol gel solutions and revised layers shorten the fabrication process from 2 days to 5 hours and concurrently improve transparency and visual effect of solar windows, and improve power conversion efficiency over 2× compared to previous devices, due to enhanced device characteristics like increased shunt resistance and fill factor. The method also eliminates human factors such as manual erasing of active layer to make series connections by providing a complete solution processable manufacturing process. The semi-transparency of the solar module allows for applications on windows and windshields. The inventive modules are more efficient than silicon solar cells in artificial light environments, significantly expanding their use in indoor applications.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: August 1, 2017
    Assignee: University of South Florida
    Inventors: Evan Lafalce, Jason Erik Lewis, Adam Flanery, Xiaomei Jiang
  • Patent number: 9425397
    Abstract: The fabrication and characterization of large scale inverted organic solar array fabricated using all-spray process is disclosed. Solar illumination has been demonstrated to improve transparent solar photovoltaic devices. The technology using SAM has potential to revolute current silicon-based photovoltaic technology by providing a complete solution processable manufacturing process. The semi-transparent property of the solar module allows for applications on windows and windshields. The inventive arrays are more efficient than silicon solar cells in artificial light environments, permitting use of the arrays in powering microelectromechanical systems and in integration with microelectromechanical systems.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: August 23, 2016
    Assignee: University of South Florida
    Inventors: Jason Erik Lewis, Xiaomei Jiang
  • Patent number: 9318632
    Abstract: Manipulation of the passivation ligands of colloidal quantum dots and use in QD electronics. A multi-step electrostatic process is described which creates bare QDs, followed by the formation of QD superlattice via electric and thermal stimulus. Colloidal QDs with original long ligands (i.e. oleic acid) are atomized, and loaded into a special designed tank to be washed, followed by another atomization step before entering the doping station. The final step is the deposition of bare QDs onto substrate and growth of QD superlattice. The method permits the formation of various photonic devices, such as single junction and tandem solar cells based on bare QD superlattice, photodetectors, and LEDs. The devices include a piezoelectric substrate with an electrode, and at least one layer of bare quantum dots comprising group IV-VI elements on the electrode, where the bare quantum dots have been stripped of outer-layer ligands.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: April 19, 2016
    Assignee: University of South Florida
    Inventors: Jason E. Lewis, Xiaomei Jiang
  • Publication number: 20160043314
    Abstract: The fabrication and characterization of large scale inverted organic solar array fabricated using all-spray process is disclosed. Solar illumination has been demonstrated to improve transparent solar photovoltaic devices. The technology using SAM has potential to revolute current silicon-based photovoltaic technology by providing a complete solution processable manufacturing process. The semi-transparent property of the solar module allows for applications on windows and windshields. The inventive arrays are more efficient than silicon solar cells in artificial light environments, permitting use of the arrays in powering microelectromechanical systems and in integration with microelectromechanical systems.
    Type: Application
    Filed: October 7, 2015
    Publication date: February 11, 2016
    Applicant: University of South Florida
    Inventors: Jason Erik Lewis, Xiaomei Jiang
  • Publication number: 20160013410
    Abstract: An all-spray fabrication method for large scale inverted organic solar array is provided. Zinc oxide sol gel solutions and revised layers shorten the fabrication process from 2 days to 5 hours and concurrently improve transparency and visual effect of solar windows, and improve power conversion efficiency over 2× compared to previous devices, due to enhanced device characteristics like increased shunt resistance and fill factor. The method also eliminates human factors such as manual erasing of active layer to make series connections by providing a complete solution processable manufacturing process. The semi-transparency of the solar module allows for applications on windows and windshields. The inventive modules are more efficient than silicon solar cells in artificial light environments, significantly expanding their use in indoor applications.
    Type: Application
    Filed: September 15, 2015
    Publication date: January 14, 2016
    Applicant: UNIVERSITY OF SOUTH FLORIDA
    Inventors: Evan Lafalce, Jason Erik Lewis, Adam Flanery, Xiaomei Jiang
  • Publication number: 20150129838
    Abstract: Manipulation of the passivation ligands of colloidal quantum dots and use in QD electronics. A multi-step electrostatic process is described which creates bare QDs, followed by the formation of QD superlattice via electric and thermal stimulus. Colloidal QDs with original long ligands (i.e. oleic acid) are atomized, and loaded into a special designed tank to be washed, followed by another atomization step before entering the doping station. The final step is the deposition of bare QDs onto substrate and growth of QD superlattice. The method permits the formation of various photonic devices, such as single junction and tandem solar cells based on bare QD superlattice, photodetectors, and LEDs. The devices include a piezoelectric substrate with an electrode, and at least one layer of bare quantum dots comprising group IV-VI elements on the electrode, where the bare quantum dots have been stripped of outer-layer ligands.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 14, 2015
    Applicant: University of South Florida
    Inventors: Jason E. Lewis, Xiaomei Jiang
  • Patent number: 8980677
    Abstract: A method of fabricating organic solar panels with transparent contacts. The method uses a layer-by-layer spray technique to create the anode layer. The method includes placing the substrate on a flat magnet, aligning a magnetic shadow mask over the substrate, applying photoresist to the substrate using spray photolithography, etching the substrate, cleaning the substrate, spin coating a tuning layer on substrate, spin coating an active layer of P3HT/PCBM on the substrate, spray coating the substrate with a modified PEDOT solution, and annealing the substrate.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: March 17, 2015
    Assignee: University of South Florida
    Inventors: Jason Lewis, Jian Zhang, Xiaomei Jiang
  • Publication number: 20140007925
    Abstract: The fabrication and characterization of large scale inverted organic solar array fabricated using all-spray process is disclosed. Solar illumination has been demonstrated to improve transparent solar photovoltaic devices. The technology using SAM has potential to revolute current silicon-based photovoltaic technology by providing a complete solution processable manufacturing process. The semi-transparent property of the solar module allows for applications on windows and windshields. The inventive arrays are more efficient than silicon solar cells in artificial light environments, permitting use of the arrays in powering microelectromechanical systems and in integration with microelectromechanical systems.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 9, 2014
    Applicant: UNIVERSITY OF SOUTH FLORIDA
    Inventors: Jason Lewis, Xiaomei Jiang
  • Patent number: 8574685
    Abstract: A thin film and a method of making a thin film. The thin film comprises a patterned substrate, a smooth film of electric field tuned quantum dots solution positioned on the patterned substrate, and a thin layer of metal positioned on the thin film. The method begins by drop-casting a quantum dots solution onto a patterned substrate to create a thin film. While the quantum dots solution is drying, a linearly increasing electric filed is applied. The thin film is then placed in a deposition chamber and a thin layer of metal is deposited onto the thin film. Also included are a method of measuring the photoinduced charge transfer (PCT) rate in a quantum dot nanocomposite film and methods of forming a Shottky barrier on a transparent ITO electrode of a quantum dot film.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: November 5, 2013
    Assignee: University of South Florida
    Inventors: Jason Lewis, Xiaomei Jiang
  • Publication number: 20130280847
    Abstract: A method of fabricating organic solar panels with transparent contacts. The method uses a layer-by-layer spray technique to create the anode layer. The method includes placing the substrate on a flat magnet, aligning a magnetic shadow mask over the substrate, applying photoresist to the substrate using spray photolithography, etching the substrate, cleaning the substrate, spin coating a tuning layer on substrate, spin coating an active layer of P3HT/PCBM on the substrate, spray coating the substrate with a modified PEDOT solution, and annealing the substrate.
    Type: Application
    Filed: June 17, 2013
    Publication date: October 24, 2013
    Applicant: UNIVERSITY OF SOUTH FLORIDA
    Inventors: Jason Lewis, Jian Zhang, Xiaomei Jiang
  • Publication number: 20120156825
    Abstract: A method of fabricating organic solar panels with transparent contacts. The method uses a layer-by-layer spray technique to create the anode layer. The method includes placing the substrate on a flat magnet, aligning a magnetic shadow mask over the substrate, applying photoresist to the substrate using spray photolithography, etching the substrate, cleaning the substrate, spin coating a tuning layer on substrate, spin coating an active layer of P3HT/PCBM on the substrate, spray coating the substrate with a modified PEDOT solution, and annealing the substrate.
    Type: Application
    Filed: February 20, 2012
    Publication date: June 21, 2012
    Applicant: UNIVERSITY OF SOUTH FLORIDA
    Inventors: Jason Lewis, Jian Zhang, Xiaomei Jiang
  • Patent number: 8183082
    Abstract: A method of fabricating organic solar arrays for application in DC power supplies for electrostatic microelectromechanical systems (MEMS) devices. A solar array with 20 miniature cells (as small as 1 mm2) interconnected in series is fabricated and characterized. Photolithography is used to isolate individual cells and output contacts of the array, whereas the thermal-vacuum deposition is employed to make the series connections of the array. With 1 mm2 for single cell and a total device area of 2.2 cm2, the organic solar array based on bulk heterojunction structure of ?-conjugated polymers and C60 derivative (6,6)-phenyl C61 butyric acid methyl ester produces an open-circuit voltage of 7.8 V and a short-circuit current of 55 ?A under simulated air mass (AM) 1.5 illumination with an intensity of 132 mW/cm2. The present method can be used in the fabrication of microarrays as small as 0.01 mm2.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: May 22, 2012
    Assignee: University of South Florida
    Inventors: Jason Lewis, Jian Zhang, Xiaomei Jiang
  • Patent number: 6943359
    Abstract: Organic materials exposed to an electron beam for patterning a substrate (1) to make an optoelectronic organic device which includes a source, a drain, gate dielectric layer (4), and a substrate for emitting light.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: September 13, 2005
    Assignee: University of Utah
    Inventors: Z. Valy Vardeny, Sergey Li, Matthew C. Delong, Xiaomei Jiang
  • Publication number: 20040113098
    Abstract: Organic materials exposed to an electron beam for patterning a substrate (1) to make an optoelectronic organic device which includes a source, a drain, gate dielectric layer (4), and a substrate for emitting light.
    Type: Application
    Filed: February 5, 2004
    Publication date: June 17, 2004
    Inventors: Z Valy Vardeny, Sergey Li, Matthew C Delong, Xiaomei Jiang