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).
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Patent number: 10615342Abstract: 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: GrantFiled: September 9, 2013Date of Patent: April 7, 2020Assignee: University of South FloridaInventors: Jason Lewis, Xiaomei Jiang
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Patent number: 10084103Abstract: 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: GrantFiled: November 4, 2013Date of Patent: September 25, 2018Assignee: University of South FloridaInventors: Jason Lewis, Xiaomei Jiang
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Patent number: 9722180Abstract: 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: GrantFiled: September 15, 2015Date of Patent: August 1, 2017Assignee: University of South FloridaInventors: Evan Lafalce, Jason Erik Lewis, Adam Flanery, Xiaomei Jiang
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Patent number: 9425397Abstract: 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: GrantFiled: October 7, 2015Date of Patent: August 23, 2016Assignee: University of South FloridaInventors: Jason Erik Lewis, Xiaomei Jiang
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Patent number: 9318632Abstract: 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: GrantFiled: November 14, 2013Date of Patent: April 19, 2016Assignee: University of South FloridaInventors: Jason E. Lewis, Xiaomei Jiang
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Publication number: 20160043314Abstract: 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: ApplicationFiled: October 7, 2015Publication date: February 11, 2016Applicant: University of South FloridaInventors: Jason Erik Lewis, Xiaomei Jiang
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Publication number: 20160013410Abstract: 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: ApplicationFiled: September 15, 2015Publication date: January 14, 2016Applicant: UNIVERSITY OF SOUTH FLORIDAInventors: Evan Lafalce, Jason Erik Lewis, Adam Flanery, Xiaomei Jiang
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Publication number: 20150129838Abstract: 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: ApplicationFiled: November 14, 2013Publication date: May 14, 2015Applicant: University of South FloridaInventors: Jason E. Lewis, Xiaomei Jiang
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Patent number: 8980677Abstract: 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: GrantFiled: June 17, 2013Date of Patent: March 17, 2015Assignee: University of South FloridaInventors: Jason Lewis, Jian Zhang, Xiaomei Jiang
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Publication number: 20140007925Abstract: 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: ApplicationFiled: September 9, 2013Publication date: January 9, 2014Applicant: UNIVERSITY OF SOUTH FLORIDAInventors: Jason Lewis, Xiaomei Jiang
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Patent number: 8574685Abstract: 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: GrantFiled: August 24, 2010Date of Patent: November 5, 2013Assignee: University of South FloridaInventors: Jason Lewis, Xiaomei Jiang
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Publication number: 20130280847Abstract: 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: ApplicationFiled: June 17, 2013Publication date: October 24, 2013Applicant: UNIVERSITY OF SOUTH FLORIDAInventors: Jason Lewis, Jian Zhang, Xiaomei Jiang
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Publication number: 20120156825Abstract: 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: ApplicationFiled: February 20, 2012Publication date: June 21, 2012Applicant: UNIVERSITY OF SOUTH FLORIDAInventors: Jason Lewis, Jian Zhang, Xiaomei Jiang
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Patent number: 8183082Abstract: 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: GrantFiled: December 3, 2009Date of Patent: May 22, 2012Assignee: University of South FloridaInventors: Jason Lewis, Jian Zhang, Xiaomei Jiang
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Patent number: 6943359Abstract: 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: GrantFiled: March 13, 2002Date of Patent: September 13, 2005Assignee: University of UtahInventors: Z. Valy Vardeny, Sergey Li, Matthew C. Delong, Xiaomei Jiang
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Publication number: 20040113098Abstract: 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: ApplicationFiled: February 5, 2004Publication date: June 17, 2004Inventors: Z Valy Vardeny, Sergey Li, Matthew C Delong, Xiaomei Jiang