Patents by Inventor Mohamed A. Elbandrawy
Mohamed A. Elbandrawy 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: 10971638Abstract: Methods of fabricating a solar cell including metallization techniques and resulting solar cells, are described. In an example, a semiconductor region can be formed in or above a substrate. A first metal layer can be formed over the semiconductor region. A laser can be applied over a first region of the metal layer to form a first metal weld between the metal layer and the semiconductor region, where applying a laser over the first region comprises applying the laser at a first scanning speed. Subsequent to applying the laser over the first region, the laser can be applied over a second region of the metal layer where applying the laser over the second region includes applying a laser at a second scanning speed. Subsequent to applying the laser over the second region, the laser can be applied over a third region of the metal layer to form a second metal weld, where applying the laser over the third region comprises applying the laser at a third scanning speed.Type: GrantFiled: January 22, 2018Date of Patent: April 6, 2021Assignees: SunPower Corporation, Total Marketing SendeesInventors: Matthieu Moors, Markus Nicht, Daniel Maria Weber, Rico Bohme, Mario Gjukic, Gabriel Harley, Mark Kleshock, Mohamed A. Elbandrawy, Taeseok Kim
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Patent number: 10672924Abstract: Laser foil trim approaches for foil-based metallization of solar cells, and the resulting solar cells, are described. For example, a method of fabricating a solar cell includes attaching a metal foil sheet to a surface of a wafer to provide a unified pairing of the metal foil sheet and the wafer, wherein the wafer has a perimeter and the metal foil sheet has a portion overhanging the perimeter. The method also includes laser scribing the metal foil sheet along the perimeter of the wafer using a laser beam that overlaps the metal foil sheet outside of the perimeter of the wafer and at the same time overlaps a portion of the unified pairing of the metal foil sheet and the wafer inside the perimeter of the wafer to remove the portion of the metal foil sheet overhanging the perimeter and to provide a metal foil piece coupled to the surface of the wafer.Type: GrantFiled: January 2, 2019Date of Patent: June 2, 2020Assignees: SunPower Corporation, Total Marketing ServicesInventors: Robert Woehl, Richard Hamilton Sewell, Mohamed A. Elbandrawy, Taeseok Kim, Thomas P. Pass, Benjamin Ian Hsia, David Fredric Joel Kavulak, Nils-Peter Harder
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Publication number: 20190140116Abstract: Laser foil trim approaches for foil-based metallization of solar cells, and the resulting solar cells, are described. For example, a method of fabricating a solar cell includes attaching a metal foil sheet to a surface of a wafer to provide a unified pairing of the metal foil sheet and the wafer, wherein the wafer has a perimeter and the metal foil sheet has a portion overhanging the perimeter. The method also includes laser scribing the metal foil sheet along the perimeter of the wafer using a laser beam that overlaps the metal foil sheet outside of the perimeter of the wafer and at the same time overlaps a portion of the unified pairing of the metal foil sheet and the wafer inside the perimeter of the wafer to remove the portion of the metal foil sheet overhanging the perimeter and to provide a metal foil piece coupled to the surface of the wafer.Type: ApplicationFiled: January 2, 2019Publication date: May 9, 2019Inventors: Robert Woehl, Richard Hamilton Sewell, Mohamed A. Elbandrawy, Taeseok Kim, Thomas P. Pass, Benjamin Ian Hsia, David Fredric Joel Kavulak, Nils-Peter Harder
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Patent number: 10177260Abstract: Laser foil trim approaches for foil-based metallization of solar cells, and the resulting solar cells, are described. For example, a method of fabricating a solar cell includes attaching a metal foil sheet to a surface of a wafer to provide a unified pairing of the metal foil sheet and the wafer, wherein the wafer has a perimeter and the metal foil sheet has a portion overhanging the perimeter. The method also includes laser scribing the metal foil sheet along the perimeter of the wafer using a laser beam that overlaps the metal foil sheet outside of the perimeter of the wafer and at the same time overlaps a portion of the unified pairing of the metal foil sheet and the wafer inside the perimeter of the wafer to remove the portion of the metal foil sheet overhanging the perimeter and to provide a metal foil piece coupled to the surface of the wafer.Type: GrantFiled: March 8, 2017Date of Patent: January 8, 2019Assignees: SunPower Corporation, Total Marketing ServicesInventors: Robert Woehl, Richard Hamilton Sewell, Mohamed A. Elbandrawy, Taeseok Kim, Thomas P. Pass, Benjamin Ian Hsia, David Fredric Joel Kavulak, Nils-Peter Harder
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Publication number: 20180145194Abstract: Methods of fabricating a solar cell including metallization techniques and resulting solar cells, are described. In an example, a semiconductor region can be formed in or above a substrate. A first metal layer can be formed over the semiconductor region. A laser can be applied over a first region of the metal layer to form a first metal weld between the metal layer and the semiconductor region, where applying a laser over the first region comprises applying the laser at a first scanning speed. Subsequent to applying the laser over the first region, the laser can be applied over a second region of the metal layer where applying the laser over the second region includes applying a laser at a second scanning speed. Subsequent to applying the laser over the second region, the laser can be applied over a third region of the metal layer to form a second metal weld, where applying the laser over the third region comprises applying the laser at a third scanning speed.Type: ApplicationFiled: January 22, 2018Publication date: May 24, 2018Inventors: Matthieu Moors, Markus Nicht, Daniel Maria Weber, Rico Bohme, Mario Gjukic, Gabriel Harley, Mark Kleshock, Mohamed A. Elbandrawy, Taeseok Kim
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Patent number: 9882071Abstract: Methods of fabricating a solar cell including metallization techniques and resulting solar cells, are described. In an example, a semiconductor region can be formed in or above a substrate. A first metal layer can be formed over the semiconductor region. A laser can be applied over a first region of the metal layer to form a first metal weld between the metal layer and the semiconductor region, where applying a laser over the first region comprises applying the laser at a first scanning speed. Subsequent to applying the laser over the first region, the laser can be applied over a second region of the metal layer where applying the laser over the second region includes applying a laser at a second scanning speed. Subsequent to applying the laser over the second region, the laser can be applied over a third region of the metal layer to form a second metal weld, where applying the laser over the third region comprises applying the laser at a third scanning speed.Type: GrantFiled: July 1, 2016Date of Patent: January 30, 2018Assignees: SunPower Corporation, Total Marketing ServicesInventors: Matthieu Moors, Markus Nicht, Daniel Maria Weber, Rico Bohme, Mario Gjukic, Gabriel Harley, Mark Kleshock, Mohamed A. Elbandrawy, Taeseok Kim
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Publication number: 20180006171Abstract: Methods of fabricating a solar cell including metallization techniques and resulting solar cells, are described. In an example, a semiconductor region can be formed in or above a substrate. A first metal layer can be formed over the semiconductor region. A laser can be applied over a first region of the metal layer to form a first metal weld between the metal layer and the semiconductor region, where applying a laser over the first region comprises applying the laser at a first scanning speed. Subsequent to applying the laser over the first region, the laser can be applied over a second region of the metal layer where applying the laser over the second region includes applying a laser at a second scanning speed. Subsequent to applying the laser over the second region, the laser can be applied over a third region of the metal layer to form a second metal weld, where applying the laser over the third region comprises applying the laser at a third scanning speed.Type: ApplicationFiled: July 1, 2016Publication date: January 4, 2018Inventors: Matthieu Moors, Markus Nicht, Daniel Maria Weber, Rico Bohme, Mario Gjukic, Gabriel Harley, Mark Kleshock, Mohamed A. Elbandrawy, Taeseok Kim
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Publication number: 20170179308Abstract: Laser foil trim approaches for foil-based metallization of solar cells, and the resulting solar cells, are described. For example, a method of fabricating a solar cell includes attaching a metal foil sheet to a surface of a wafer to provide a unified pairing of the metal foil sheet and the wafer, wherein the wafer has a perimeter and the metal foil sheet has a portion overhanging the perimeter. The method also includes laser scribing the metal foil sheet along the perimeter of the wafer using a laser beam that overlaps the metal foil sheet outside of the perimeter of the wafer and at the same time overlaps a portion of the unified pairing of the metal foil sheet and the wafer inside the perimeter of the wafer to remove the portion of the metal foil sheet overhanging the perimeter and to provide a metal foil piece coupled to the surface of the wafer.Type: ApplicationFiled: March 8, 2017Publication date: June 22, 2017Inventors: Robert Woehl, Richard Hamilton Sewell, Mohamed A. Elbandrawy, Taeseok Kim, Thomas P. Pass, Benjamin Ian Hsia, David Fredric Joel Kavulak, Nils-Peter Harder
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Publication number: 20170125612Abstract: Laser foil trim approaches for foil-based metallization of solar cells, and the resulting solar cells, are described. For example, a method of fabricating a solar cell includes attaching a metal foil sheet to a surface of a wafer to provide a unified pairing of the metal foil sheet and the wafer, wherein the wafer has a perimeter and the metal foil sheet has a portion overhanging the perimeter. The method also includes laser scribing the metal foil sheet along the perimeter of the wafer using a laser beam that overlaps the metal foil sheet outside of the perimeter of the wafer and at the same time overlaps a portion of the unified pairing of the metal foil sheet and the wafer inside the perimeter of the wafer to remove the portion of the metal foil sheet overhanging the perimeter and to provide a metal foil piece coupled to the surface of the wafer.Type: ApplicationFiled: October 29, 2015Publication date: May 4, 2017Inventors: Robert Woehl, Richard Hamilton Sewell, Mohamed A. Elbandrawy, Taeseok Kim, Thomas P. Pass, Benjamin Ian Hsia, David Fredric Joel Kavulak, Nils-Peter Harder
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Patent number: 9620655Abstract: Laser foil trim approaches for foil-based metallization of solar cells, and the resulting solar cells, are described. For example, a method of fabricating a solar cell includes attaching a metal foil sheet to a surface of a wafer to provide a unified pairing of the metal foil sheet and the wafer, wherein the wafer has a perimeter and the metal foil sheet has a portion overhanging the perimeter. The method also includes laser scribing the metal foil sheet along the perimeter of the wafer using a laser beam that overlaps the metal foil sheet outside of the perimeter of the wafer and at the same time overlaps a portion of the unified pairing of the metal foil sheet and the wafer inside the perimeter of the wafer to remove the portion of the metal foil sheet overhanging the perimeter and to provide a metal foil piece coupled to the surface of the wafer.Type: GrantFiled: October 29, 2015Date of Patent: April 11, 2017Assignees: SunPower Corporation, Total Marketing ServicesInventors: Robert Woehl, Richard Hamilton Sewell, Mohamed A. Elbandrawy, Taeseok Kim, Thomas P. Pass, Benjamin Ian Hsia, David Fredric Joel Kavulak, Nils-Peter Harder