Patents by Inventor Paul Loscutoff
Paul Loscutoff 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).
-
Publication number: 20210384366Abstract: Approaches for the metallization of solar cells and the resulting solar cells are described. In an example, a method of fabricating a solar cell involves forming a barrier layer on a semiconductor region disposed in or above a substrate. The semiconductor region includes monocrystalline or polycrystalline silicon. The method also involves forming a conductive paste layer on the barrier layer. The method also involves forming a conductive layer from the conductive paste layer. The method also involves forming a contact structure for the semiconductor region of the solar cell, the contact structure including at least the conductive layer.Type: ApplicationFiled: August 17, 2021Publication date: December 9, 2021Inventors: Richard Hamilton Sewell, David Aaron Randolph Barkhouse, Junbo Wu, Michael Cudzinovic, Paul Loscutoff, Joseph Behnke, Michel Arsène Olivier Ngamo Toko
-
Patent number: 11127866Abstract: Approaches for the metallization of solar cells and the resulting solar cells are described. In an example, a method of fabricating a solar cell involves forming a barrier layer on a semiconductor region disposed in or above a substrate. The semiconductor region includes monocrystalline or polycrystalline silicon. The method also involves forming a conductive paste layer on the barrier layer. The method also involves forming a conductive layer from the conductive paste layer. The method also involves forming a contact structure for the semiconductor region of the solar cell, the contact structure including at least the conductive layer.Type: GrantFiled: June 1, 2016Date of Patent: September 21, 2021Assignees: SunPower Corporation, Total Marketing ServicesInventors: Richard Hamilton Sewell, David Aaron Randolph Barkhouse, Junbo Wu, Michael Cudzinovic, Paul Loscutoff, Joseph Behnke, Michel Arséne Olivier Ngamo Toko
-
Patent number: 10096728Abstract: A solar cell can include a substrate and a semiconductor region disposed in or above the substrate. Selective firing of a conductive paste can be used to form a conductive contact for a solar cell. The solar cell can also include a conductive contact disposed on the semiconductor region with the conductive contact including a conductive paste that has a top and bottom portion with the top portion having particles coalesced together.Type: GrantFiled: June 27, 2014Date of Patent: October 9, 2018Assignee: SunPower CorporationInventors: Paul Loscutoff, Taeseok Kim, Michael Morse, Peter John Cousins, Kevin Mikio Mukai
-
Publication number: 20180286991Abstract: Coated foil-based approaches for metallization of solar cells, and the resulting solar cells, are described. For example, a solar cell includes a substrate. A semiconductor region is disposed in or above the substrate. A conductive contact structure is disposed on and is in electrical contact with the semiconductor region. The conductive contact structure includes a metal foil portion having a first side facing the semiconductor region, and a second side opposite the first side. The second side of the metal foil portion is at least partially coated with an etch-resistant insulating film.Type: ApplicationFiled: March 31, 2017Publication date: October 4, 2018Inventors: Paul Loscutoff, Richard Hamilton Sewell
-
Patent number: 10056506Abstract: A solar cell can include a substrate and a semiconductor region disposed in or above the substrate. The solar cell can also include a conductive contact disposed on the semiconductor region with the conductive contact including a paste, a first metal, and a first conductive portion that includes a conductive alloy formed from the first metal at an interface of the substrate and the semiconductor region.Type: GrantFiled: February 8, 2017Date of Patent: August 21, 2018Assignees: SunPower Corporation, Total Marketing ServicesInventors: Richard Hamilton Sewell, Paul Loscutoff, Michel Arsène Olivier Ngamo Toko
-
Patent number: 9893224Abstract: A system and method of patterning dopants of opposite polarity to form a solar cell is described. Two dopant films are deposited on a substrate. A laser is used to pattern the N-type dopant, by mixing the two dopant films into a single film with an exposure to the laser and/or drive the N-type dopant into the substrate to form an N-type emitter. A thermal process drives the P-type dopant from the P-type dopant film to form P-type emitters and further drives the N-type dopant from the single film to either form or further drive the N-type emitter.Type: GrantFiled: November 30, 2016Date of Patent: February 13, 2018Assignee: SunPower CorporationInventors: Paul Loscutoff, Gabriel Harley
-
Patent number: 9799783Abstract: Dopant ink compositions and methods of fabricating solar cells there from are described. A dopant ink composition may include a cross-linkable matrix precursor, a bound dopant species, and a solvent. A method of fabricating a solar cell may include delivering a dopant ink composition to a region above a substrate. The dopant ink composition includes a cross-linkable matrix precursor, a bound dopant species, and a solvent. The method also includes baking the dopant ink composition to remove a substantial portion of the solvent of the dopant ink composition, curing the baked dopant ink composition to cross-link a substantial portion of the cross-linkable matrix precursor of the dopant ink composition, and driving dopants from the cured dopant ink composition toward the substrate.Type: GrantFiled: March 31, 2015Date of Patent: October 24, 2017Assignee: SunPower CorporationInventors: Paul Loscutoff, Kahn Wu, Steven Edward Molesa
-
Patent number: 9768327Abstract: Fabricating a semiconductor device can include forming a metal seed region over a substrate. The method can include forming a mask over a first portion of the metal seed region. The method can also include forming a metal region over the metal seed region and removing the mask. The method can include forming metal contact fingers on the semiconductor device, where the forming includes etching the first portion of the metal seed region with an etchant comprising an acid, an oxidizer and chloride ions.Type: GrantFiled: June 25, 2015Date of Patent: September 19, 2017Assignees: SunPower Corporation, Total Marketing ServicesInventors: Robert Woehl, David Aaron Randolph Barkhouse, Paul Loscutoff
-
Publication number: 20170148934Abstract: A solar cell can include a substrate and a semiconductor region disposed in or above the substrate. The solar cell can also include a conductive contact disposed on the semiconductor region with the conductive contact including a paste, a first metal, and a first conductive portion that includes a conductive alloy formed from the first metal at an interface of the substrate and the semiconductor region.Type: ApplicationFiled: February 8, 2017Publication date: May 25, 2017Inventors: Richard Hamilton Sewell, Paul Loscutoff, Michel Arsène Olivier Ngamo Toko
-
Publication number: 20170084770Abstract: A system and method of patterning dopants of opposite polarity to form a solar cell is described. Two dopant films are deposited on a substrate. A laser is used to pattern the N-type dopant, by mixing the two dopant films into a single film with an exposure to the laser and/or drive the N-type dopant into the substrate to form an N-type emitter. A thermal process drives the P-type dopant from the P-type dopant film to form P-type emitters and further drives the N-type dopant from the single film to either form or further drive the N-type emitter.Type: ApplicationFiled: November 30, 2016Publication date: March 23, 2017Inventors: Paul Loscutoff, Gabriel Harley
-
Patent number: 9570206Abstract: A solar cell can include a substrate and a semiconductor region disposed in or above the substrate. The solar cell can also include a conductive contact disposed on the semiconductor region with the conductive contact including a paste, a first metal, and a first conductive portion that includes a conductive alloy formed from the first metal at an interface of the substrate and the semiconductor region.Type: GrantFiled: September 27, 2013Date of Patent: February 14, 2017Assignees: SunPower Corporation, Total Marketing ServicesInventors: Richard Hamilton Sewell, Paul Loscutoff, Michel Arsène Olivier Ngamo Toko
-
Patent number: 9564551Abstract: A method of manufacturing an all back contact solar cell which has a hybrid emitter design. The solar cell has a thin dielectric layer formed on a backside surface of a single crystalline silicon substrate. One emitter of the solar cell is made of doped polycrystalline silicon that is formed on the thin dielectric layer. A second emitter of the solar cell is formed in the single crystalline silicon substrate and is made of doped single crystalline silicon. The method further includes forming contact holes that allow metal contacts to connect to corresponding emitters.Type: GrantFiled: March 11, 2016Date of Patent: February 7, 2017Assignee: SunPower CorporationInventors: Paul Loscutoff, Seung Rim
-
Patent number: 9559246Abstract: Methods of fabricating solar cell emitter regions using silicon nano-particles and the resulting solar cells are described. In an example, a method of fabricating an emitter region of a solar cell includes forming a region of doped silicon nano-particles above a dielectric layer disposed above a surface of a substrate of the solar cell. A layer of silicon is formed on the region of doped silicon nano-particles. At least a portion of the layer of silicon is mixed with at least a portion of the region of doped silicon nano-particles to form a doped polycrystalline silicon layer disposed on the dielectric layer.Type: GrantFiled: November 18, 2015Date of Patent: January 31, 2017Assignee: SunPower CorporationInventors: Paul Loscutoff, David D. Smith, Michael Morse, Ann Waldhauer, Taeseok Kim, Steven Edward Molesa
-
Patent number: 9537041Abstract: A system and method of patterning dopants of opposite polarity to form a solar cell is described. Two dopant films are deposited on a substrate. A laser is used to pattern the N-type dopant, by mixing the two dopant films into a single film with an exposure to the laser and/or drive the N-type dopant into the substrate to form an N-type emitter. A thermal process drives the P-type dopant from the P-type dopant film to form P-type emitters and further drives the N-type dopant from the single film to either form or further drive the N-type emitter.Type: GrantFiled: June 27, 2014Date of Patent: January 3, 2017Assignee: SunPower CorporationInventors: Paul Loscutoff, Gabriel Harley
-
Publication number: 20160380122Abstract: Fabricating a semiconductor device can include forming a metal seed region over a substrate. The method can include forming a mask over a first portion of the metal seed region. The method can also include forming a metal region over the metal seed region and removing the mask. The method can include forming metal contact fingers on the semiconductor device, where the forming includes etching the first portion of the metal seed region with an etchant comprising an acid, an oxidizer and chloride ions.Type: ApplicationFiled: June 25, 2015Publication date: December 29, 2016Inventors: Robert Woehl, David Aaron Randolph Barkhouse, Paul Loscutoff
-
Publication number: 20160380126Abstract: A solar cell can include a substrate, a semiconductor region disposed in or above the substrate, and a conductive stack that includes a first conductive region, a multi-layer barrier region, and a second conductive region.Type: ApplicationFiled: June 25, 2015Publication date: December 29, 2016Inventors: David Aaron Randolph Barkhouse, Todd Richards Johnson, Paul Loscutoff, Robert Woehl
-
Publication number: 20160276504Abstract: Approaches for the metallization of solar cells and the resulting solar cells are described. In an example, a method of fabricating a solar cell involves forming a barrier layer on a semiconductor region disposed in or above a substrate. The semiconductor region includes monocrystalline or polycrystalline silicon. The method also involves forming a conductive paste layer on the barrier layer. The method also involves forming a conductive layer from the conductive paste layer. The method also involves forming a contact structure for the semiconductor region of the solar cell, the contact structure including at least the conductive layer.Type: ApplicationFiled: June 1, 2016Publication date: September 22, 2016Inventors: Richard Hamilton Sewell, David Aaron Randolph Barkhouse, Junbo Wu, Michael Cudzinovic, Paul Loscutoff, Joseph Behnke, Michel Arsène Olivier Ngamo Toko
-
Patent number: 9437757Abstract: A method of fabricating a solar cell is disclosed. The method includes forming a polished surface on a silicon substrate and forming a first flowable matrix in an interdigitated pattern on the polished surface, where the polished surface allows the first flowable matrix to form an interdigitated pattern comprising features of uniform thickness and width. In an embodiment, the method includes forming the silicon substrate using a method such as, but not limited to, of diamond wire or slurry wafering processes. In another embodiment, the method includes forming the polished surface on the silicon substrate using a chemical etchant such as, but not limited to, sulfuric acid (H2SO4), acetic acid (CH3COOH), nitric acid (HNO3), hydrofluoric acid (HF) or phosphoric acid (H3PO4). In still another embodiment, the etchant is an isotropic etchant. In yet another embodiment, the method includes providing a surface of the silicon substrate with at most 500 nanometer peak-to-valley roughness.Type: GrantFiled: June 19, 2015Date of Patent: September 6, 2016Assignee: SunPower CorporationInventors: Genevieve A. Solomon, Scott Harrington, Kahn Wu, Paul Loscutoff, Junbo Wu, Steven Edward Molesa
-
Publication number: 20160204288Abstract: An all back contact solar cell has a hybrid emitter design. The solar cell has a thin dielectric layer formed on a backside surface of a single crystalline silicon substrate. One emitter of the solar cell is made of doped polycrystalline silicon that is formed on the thin dielectric layer. The other emitter of the solar cell is formed in the single crystalline silicon substrate and is made of doped single crystalline silicon. The solar cell includes contact holes that allow metal contacts to connect to corresponding emitters.Type: ApplicationFiled: March 11, 2016Publication date: July 14, 2016Applicant: SunPower CorporationInventors: Paul LOSCUTOFF, Seung RIM
-
Patent number: 9362427Abstract: Approaches for the metallization of solar cells and the resulting solar cells are described. In an example, a method of fabricating a solar cell involves forming a barrier layer on a semiconductor region disposed in or above a substrate. The semiconductor region includes monocrystalline or polycrystalline silicon. The method also involves forming a conductive paste layer on the barrier layer. The method also involves forming a conductive layer from the conductive paste layer. The method also involves forming a contact structure for the semiconductor region of the solar cell, the contact structure including at least the conductive layer.Type: GrantFiled: December 20, 2013Date of Patent: June 7, 2016Assignees: SunPower Corporation, Total Marketing ServicesInventors: Richard Hamilton Sewell, David Aaron Randolph Barkhouse, Junbo Wu, Michael Cudzinovic, Paul Loscutoff, Joseph Behnke, Michel Arsène Olivier Ngamo Toko