Patents Assigned to Pacific Light Technologies Corp.
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Patent number: 9831397Abstract: Fabricating a semiconductor structure including forming a nanocrystalline core from a first semiconductor material, forming a nanocrystalline shell from a second, different, semiconductor material that at least partially surrounds the nanocrystalline core, wherein the nanocrystalline core and the nanocrystalline shell form a quantum dot. Fabrication further involves forming an insulator layer encapsulating the quantum dot to create a coated quantum dot, and forming an additional insulator layer on the coated quantum dot using an Atomic Layer Deposition (ALD) process.Type: GrantFiled: March 8, 2016Date of Patent: November 28, 2017Assignee: Pacific Light Technologies Corp.Inventors: Brian Theobald, Matthew Bertram, Weiwen Zhao, Juanita N. Kurtin, Norbert Puetz
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Patent number: 9825205Abstract: Quantum dot polymer composites for on-chip light emitting diode applications are described. In an example, a composite for on-chip light emitting diode application includes a polymer matrix, a plurality of quantum dots dispersed in the polymer matrix, and a base dispersed in the polymer matrix.Type: GrantFiled: March 4, 2014Date of Patent: November 21, 2017Assignee: Pacific Light Technologies Corp.Inventors: Kari N. Haley, Benjamin Daniel Mangum, Weiwen Zhao, Nathan Evan Stott, Juanita N. Kurtin
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Patent number: 9793446Abstract: Composites having semiconductor structures embedded in a matrix are described. In an example, a composite includes a matrix material. A plurality of semiconductor structures is embedded in the matrix material. Each semiconductor structure includes an anisotropic nanocrystalline core composed of a first semiconductor material. Each semiconductor structure also includes a nanocrystalline shell composed of a second, different, semiconductor material at least partially surrounding the anisotropic nanocrystalline core. An insulator layer encapsulates each nanocrystalline shell and anisotropic nanocrystalline core pairing.Type: GrantFiled: April 13, 2015Date of Patent: October 17, 2017Assignee: Pacific Light Technologies Corp.Inventors: Juanita Kurtin, Brian Theobald, Matthew J. Carillo, Oun-Ho Park, Georgeta Masson, Steven M. Hughes
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Patent number: 9732274Abstract: A semiconductor structure includes a nanocrystalline core comprising a first semiconductor material having a first bandgap, and a nanocrystalline shell comprising a second semiconductor material different than the first semiconductor material at least partially surrounding the nanocrystalline core, the second semiconductor material having a second bandgap greater than the first bandgap.Type: GrantFiled: July 1, 2016Date of Patent: August 15, 2017Assignee: Pacific Light Technologies Corp.Inventors: Benjamin Daniel Mangum, Nathan Evan Stott, Norbert Puetz, Juanita N. Kurtin
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Patent number: 9722147Abstract: Networks of semiconductor structures with fused insulator coatings and methods of fabricating networks of semiconductor structures with fused insulator coatings are described. In an example, a semiconductor structure includes an insulator network. A plurality of discrete semiconductor nanocrystals is disposed in the insulator network. Each of the plurality of discrete semiconductor nanocrystals is spaced apart from one another by the insulator network.Type: GrantFiled: August 21, 2013Date of Patent: August 1, 2017Assignee: Pacific Light Technologies Corp.Inventors: Benjamin Daniel Mangum, Weiwen Zhao, Kari N. Haley, Juanita N. Kurtin
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Patent number: 9680072Abstract: An LED is fabricated with a composite layer including quantum dots (QDs), wherein the QDs are provided in a silicone paste. A plurality of QD silicone paste reservoirs each contain a provided silicone paste with QDs of different wavelengths. Further, a silicone paste reservoir containing a clear silicone paste. A paste mixing chamber, in to which the QD paste reservoirs and the silicone paste reservoir supply their respective pastes, mixes together the pastes and form a mixed QD silicone paste. A silicone mixing and metering component receives the mixed QD silicone paste from the paste mixing chamber, and further receives A silicone and B silicone from a respective A silicone reservoir and a B silicone reservoir, measures, and mixes the mixed QD silicone paste with the A and B silicones to form a silicone polymer composite. A dispensing component receives to the silicone polymer composite from the mixing and metering component and dispenses the composite to a molding tool.Type: GrantFiled: July 14, 2015Date of Patent: June 13, 2017Assignee: Pacific Light Technologies Corp.Inventors: Juanita N. Kurtin, Michael Jansen
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Patent number: 9666766Abstract: Semiconductor nanocrystal structures having silica insulator coatings encapsulating the nanocrystals and methods of fabricating semiconductor nanocrystal structures having silica insulator coatings encapsulating the nanocrystals involve adding a silicon-containing silica precursor species to a solution of nanocrystals, subsequently forming a silica-based insulator layer on the nanocrystals from a reaction involving the silicon-containing silica precursor species, and adding additional amounts of the silicon-containing silica precursor species after initial formation of the silica-based insulator layer while continuing to form the silica-based insulator layer to finally encapsulate each of the nanocrystals.Type: GrantFiled: August 21, 2013Date of Patent: May 30, 2017Assignee: Pacific Light Technologies Corp.Inventors: Juanita N. Kurtin, Weiwen Zhao
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Patent number: 9567514Abstract: Fabricating a semiconductor structure including forming a nanocrystalline core from a first semiconductor material, forming a nanocrystalline shell from a second, different, semiconductor material that at least partially surrounds the nanocrystalline core, wherein the nanocrystalline core and the nanocrystalline shell form a quantum dot. Fabrication further involves forming an insulator layer encapsulating the quantum dot to create a coated quantum dot, and forming an additional insulator layer on the coated quantum.Type: GrantFiled: May 13, 2016Date of Patent: February 14, 2017Assignee: Pacific Light Technologies Corp.Inventors: Weiwen Zhao, Juanita N. Kurtin
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Patent number: 9525092Abstract: A solar concentrator module (80) employs a luminescent concentrator material (82) between photovoltaic cells (86) having their charge-carrier separation junctions (90) parallel to front surfaces (88) of photovoltaic material 84 of the photovoltaic cells (86). Intercell areas (78) covered by the luminescent concentrator material (82) occupy from 2 to 50% of the total surface area of the solar concentrator modules (80). The luminescent concentrator material (82) preferably employs quantum dot heterostructures, and the photovoltaic cells (86) preferably employ low-cost high-efficiency photovoltaic materials (84), such as silicon-based photovoltaic materials.Type: GrantFiled: November 2, 2011Date of Patent: December 20, 2016Assignee: Pacific Light Technologies Corp.Inventors: Alex C. Mayer, Shawn R. Scully, Juanita N. Kurtin, Alex R. Guichard, Steven M. Hughes, Oun Ho Park, Paul-Emile B. Trudeau, Colin C. Reese, Manav Sheoran, Georgeta Masson
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Patent number: 9508892Abstract: Nano-crystalline core and nano-crystalline shell pairings having group I-III-VI material nano-crystalline cores, and methods of fabricating nano-crystalline core and nano-crystalline shell pairings having group I-III-VI material nano-crystalline cores, are described. In an example, a semiconductor structure includes a nano-crystalline core composed of a group I-III-VI semiconductor material. A nano-crystalline shell composed of a second, different, group I-III-VI semiconductor material at least partially surrounds the nano-crystalline core.Type: GrantFiled: October 7, 2015Date of Patent: November 29, 2016Assignee: Pacific Light Technologies Corp.Inventors: Steven M. Hughes, Juanita N. Kurtin
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Patent number: 9478717Abstract: Networks of semiconductor structures with fused insulator coatings and methods of fabricating networks of semiconductor structures with fused insulator coatings are described. In an example, a semiconductor structure includes an insulator network. A plurality of discrete semiconductor nanocrystals is disposed in the insulator network. Each of the plurality of discrete semiconductor nanocrystals is spaced apart from one another by the insulator network.Type: GrantFiled: October 21, 2015Date of Patent: October 25, 2016Assignee: Pacific Light Technologies Corp.Inventors: Benjamin Daniel Mangum, Weiwen Zhao, Kari N. Haley, Juanita N. Kurtin
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Patent number: 9428691Abstract: Semiconductor structures having a nanocrystalline core and nanocrystalline shell pairing with compositional transition layers are described. In an example, a semiconductor structure includes a nanocrystalline core composed of a first semiconductor material. A nanocrystalline shell composed of a second semiconductor material surrounds the nanocrystalline core. A compositional transition layer is disposed between, and in contact with, the nanocrystalline core and nanocrystalline shell and has a composition intermediate to the first and second semiconductor materials. In another example, a semiconductor structure includes a nanocrystalline core composed of a first semiconductor material. A nanocrystalline shell composed of a second semiconductor material surrounds the nanocrystalline core. A nanocrystalline outer shell surrounds the nanocrystalline shell and is composed of a third semiconductor material.Type: GrantFiled: December 11, 2015Date of Patent: August 30, 2016Assignee: Pacific Light Technologies Corp.Inventor: Juanita N. Kurtin
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Patent number: 9423083Abstract: A lighting apparatus includes a housing structure, a light source supported within the housing structure, and a light coversion layer disposed above the light source. The light conversion layer comprises a plurality of non- or low-self absorbing quantum dots (QDs) embedded in a matrix material, each QD having a different light emission profile that is a function of a size and/or composition of the QD, each of the plurality of QDs selected to achieve a defined spectral emission profile for the lighting device when the plurality of QDs is illuminated by the light source.Type: GrantFiled: March 7, 2014Date of Patent: August 23, 2016Assignee: Pacific Light Technologies, Corp.Inventors: Julian Osinski, Juanita N. Kurtin, Benjamin Daniel Mangum, Ron Nelson
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Patent number: 9425365Abstract: Lighting devices having highly luminescent quantum dots are described. In an example, a lighting apparatus includes a housing structure or a substrate. The lighting apparatus also includes a light emitting diode supported within the housing structure or disposed on the substrate, respectively. The lighting apparatus also includes a light conversion layer disposed above the light emitting diode. The light conversion layer includes a plurality of quantum dots. Each quantum dot includes an anisotropic nanocrystalline core having a first semiconductor material and having an aspect ratio between, but not including, 1.0 and 2.0. Each quantum dot also includes a nanocrystalline shell having a second, different, semiconductor material at least partially surrounding the anisotropic nanocrystalline core.Type: GrantFiled: August 20, 2012Date of Patent: August 23, 2016Assignee: Pacific Light Technologies Corp.Inventor: Juanita N. Kurtin
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Patent number: 9368693Abstract: Semiconductor structures having a nanocrystalline core and nanocrystalline shell pairing compositional transition layers are described. In an example, a semiconductor structure includes a nanocrystalline core composed of a first semiconductor material. A nanocrystalline shell composed of a second semiconductor material surrounds the nanocrystalline core. A compositional transition layer is disposed between, and in contact with, the nanocrystalline core and nanocrystalline shell and has a composition intermediate to the first and second semiconductor materials. In another example, a semiconductor structure includes a nanocrystalline core composed of a first semiconductor material. A nanocrystalline shell composed of a second semiconductor material surrounds the nanocrystalline core. A nanocrystalline outer shell surrounds the nanocrystalline shell and is composed of a third semiconductor material.Type: GrantFiled: October 11, 2013Date of Patent: June 14, 2016Assignee: Pacific Light Technologies Corp.Inventor: Juanita N. Kurtin
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Patent number: 9337368Abstract: Ceramic compositions having a dispersion of nano-particles therein and methods of fabricating ceramic compositions having a dispersion of nano-particles therein are described. In an example, a method of forming a composition having a dispersion of nano-particles therein includes forming a mixture of semiconductor nano-particles and ceramic precursor molecules. A ceramic matrix is formed from the ceramic precursor molecules. The ceramic matrix includes a dispersion of the semiconductor nano-particles therein. In another example, a composition includes a medium including ceramic precursor molecules. The medium is a liquid or gel at 25 degrees Celsius. A plurality of semiconductor nano-particles is suspended in the medium.Type: GrantFiled: October 16, 2013Date of Patent: May 10, 2016Assignee: Pacific Light Technologies Corp.Inventors: Juanita N. Kurtin, Georgeta Masson
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Publication number: 20160096993Abstract: Semiconductor structures having a nanocrystalline core and nanocrystalline shell pairing with compositional transition layers are described. In an example, a semiconductor structure includes a nanocrystalline core composed of a first semiconductor material. A nanocrystalline shell composed of a second semiconductor material surrounds the nanocrystalline core. A compositional transition layer is disposed between, and in contact with, the nanocrystalline core and nanocrystalline shell and has a composition intermediate to the first and second semiconductor materials. In another example, a semiconductor structure includes a nanocrystalline core composed of a first semiconductor material. A nanocrystalline shell composed of a second semiconductor material surrounds the nanocrystalline core. A nanocrystalline outer shell surrounds the nanocrystalline shell and is composed of a third semiconductor material.Type: ApplicationFiled: December 11, 2015Publication date: April 7, 2016Applicant: Pacific Light Technologies Corp.Inventor: Juanita N. Kurtin
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Patent number: 9269844Abstract: Ceramic compositions having a dispersion of nano-particles therein and methods of fabricating ceramic compositions having a dispersion of nano-particles therein are described. In an example, a method of forming a composition having a dispersion of nano-particles therein includes forming a mixture of semiconductor nano-particles and ceramic precursor molecules. A ceramic matrix is formed from the ceramic precursor molecules. The ceramic matrix includes a dispersion of the semiconductor nano-particles therein. In another example, a composition includes a medium including ceramic precursor molecules. The medium is a liquid or gel at 25 degrees Celsius. A plurality of semiconductor nano-particles is suspended in the medium.Type: GrantFiled: December 3, 2013Date of Patent: February 23, 2016Assignee: Pacific Light Technologies Corp.Inventors: Juanita N. Kurtin, Georgeta Masson
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Publication number: 20160043287Abstract: Networks of semiconductor structures with fused insulator coatings and methods of fabricating networks of semiconductor structures with fused insulator coatings are described. In an example, a semiconductor structure includes an insulator network. A plurality of discrete semiconductor nanocrystals is disposed in the insulator network. Each of the plurality of discrete semiconductor nanocrystals is spaced apart from one another by the insulator network.Type: ApplicationFiled: October 21, 2015Publication date: February 11, 2016Applicant: Pacific Light Technologies Corp.Inventors: Benjamin Daniel Mangum, Weiwen Zhao, Kari N. Haley, Juanita N. Kurtin
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Patent number: 9249354Abstract: Networks of semiconductor structures with fused insulator coatings and methods of fabricating networks of semiconductor structures with fused insulator coatings are described. In an example, a method of fabricating a semiconductor structure involves forming a mixture including a plurality of discrete semiconductor nanocrystals. Each of the plurality of discrete semiconductor nanocrystals is discretely coated by an insulator shell. The method also involves adding a base to the mixture to fuse the insulator shells of each of the plurality of discrete nanocrystals, providing an insulator network. Each of the plurality of discrete semiconductor nanocrystals is spaced apart from one another by the insulator network. The base one such as, but not limited to, LiOH, RbOH, CsOH, MgOH, Ca(OH)2, Sr(OH)2, Ba(OH)2, (Me)4NOH, (Et)4NOH, or (Bu)4NOH.Type: GrantFiled: December 12, 2013Date of Patent: February 2, 2016Assignee: Pacific Light Technologies Corp.Inventors: Benjamin Daniel Mangum, Weiwen Zhao, Kari N. Haley, Juanita N. Kurtin, Nathan Evan Stott