Jason M Lewis

US Patent:

8183082, May 22, 2012

Filed:

Dec 3, 2009

Appl. No.:

12/630398

Inventors:

Jason Lewis - Lutz FL, US
Jian Zhang - Tampa FL, US
Xiaomei Jiang - Tampa FL, US

Assignee:

University of South Florida - Tampa FL

International Classification:

H01L 21/00

US Classification:

438 73, 438 99, 438679, 438722, 438944, 136263

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 mm) 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 mmfor single cell and a total device area of 2. 2 cm, the organic solar array based on bulk heterojunction structure of π-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 μA under simulated air mass (AM) 1. 5 illumination with an intensity of 132 mW/cm. The present method can be used in the fabrication of microarrays as small as 0. 01 mm.

US Patent:

8574685, Nov 5, 2013

Filed:

Aug 24, 2010

Appl. No.:

12/862260

Inventors:

Jason Lewis - Lutz FL, US
Xiaomei Jiang - Tampa FL, US

Assignee:

University of South Florida - Tampa FL

International Classification:

B05D 5/12
B05D 3/00
H05C 1/00
H01L 21/00

US Classification:

427472, 427 75, 427 76, 427473, 427532, 438 95

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.

US Patent:

20120156825, Jun 21, 2012

Filed:

Feb 20, 2012

Appl. No.:

13/400352

Inventors:

Jason Lewis - Lutz FL, US
Jian Zhang - Tampa FL, US
Xiaomei Jiang - Tampa FL, US

Assignee:

UNIVERSITY OF SOUTH FLORIDA - Tampa FL

International Classification:

H01L 31/18

US Classification:

438 73, 257E31001

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.

US Patent:

20130263916, Oct 10, 2013

Filed:

Apr 1, 2013

Appl. No.:

13/854602

Inventors:

Jason Eric Lewis - Lutz FL, US
Xiaomei Jane Jiang - Tampa FL, US

Assignee:

UNIVERSITY OF SOUTH FLORIDA - Tampa FL

International Classification:

H01L 31/0224
H01L 51/44
H01L 31/05

US Classification:

136251, 136256, 438 64

Abstract:

An inverted organic solar photovoltaic cell is described that may be fabricated onto rigid or flexible substrates using spray-on technology to apply the various layers of the cell. Indium tin oxide with a thin layer of cesium carbonate functions as the cathode for the novel inverted cells. An active layer of poly-3(hexylthiophene) and [6,6]-phenyl C61-butyric acid methylester having a thickness around 200 nm to 600 nm facilitates a high level of light transmittal through the cell. A modified PEDOT:PSS, made by doping a conductive polymer with dimethylsulfoxide (DMSO), functions as the anode. A method of forming the inverted organic solar photovoltaic cell is also described using gas-propelled spraying to achieve thin layers. After the layers are formed, the cell is sealed using a vacuum and temperature-based annealing and encapsulation with UV-cure epoxy.

US Patent:

20130280847, Oct 24, 2013

Filed:

Jun 17, 2013

Appl. No.:

13/919533

Inventors:

Jason Lewis - Lutz FL, US
Jian Zhang - Tampa FL, US
Xiaomei Jiang - Tampa FL, US

Assignee:

UNIVERSITY OF SOUTH FLORIDA - Tampa FL

International Classification:

H01L 51/00

US Classification:

438 64

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.

US Patent:

20140007925, Jan 9, 2014

Filed:

Sep 9, 2013

Appl. No.:

14/021620

Inventors:

Jason Lewis - Lutz FL, US
Xiaomei Jiang - Tampa FL, US

Assignee:

UNIVERSITY OF SOUTH FLORIDA - Tampa FL

International Classification:

H01L 27/30
H01L 31/0256
H01L 31/048

US Classification:

136251, 438 66

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.

US Patent:

20160197213, Jul 7, 2016

Filed:

Mar 11, 2016

Appl. No.:

15/068076

Inventors:

Jason Erik Lewis - Lutz FL, US
Xiaomei Jane Jiang - Tampa FL, US

Assignee:

University of South Florida - Tampa FL

International Classification:

H01L 31/032
H01L 31/0352
H01L 31/18

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.

US Patent:

20160043314, Feb 11, 2016

Filed:

Oct 7, 2015

Appl. No.:

14/876872

Inventors:

Jason Erik Lewis - Lutz FL, US
Xiaomei Jiang - Tampa FL, US

Assignee:

University of South Florida - Tampa FL

International Classification:

H01L 51/00
H01L 27/30
H01L 51/44

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.