Patents by Inventor CHRISTOPHE A. HURNI
CHRISTOPHE A. HURNI 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: 20210050480Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: ApplicationFiled: June 22, 2020Publication date: February 18, 2021Inventors: Michael J. Cich, Aurelien J.F. David, Christophe Hurni, Rafael Aldaz, Michael Ragan Krames
-
Patent number: 10734549Abstract: A method of improving high-current density efficiency of an LED, said method comprising: (a) preparing a series of LEDs having decreasing defect densities, wherein each LED of said series has a peak IQE of at least 50%, and wherein each LED of said series has the same epitaxial structure; (b) determining an increase in IQEs at high-current density between at least two LEDs of said series; (c) preparing at least an additional LED of said series by reducing defect density relative to the previously obtained lowest defect density; and (d) reiterating steps (b) and (c) until said increase is at least 3% between two LEDs of said series having a decrease X in defect densities.Type: GrantFiled: June 19, 2019Date of Patent: August 4, 2020Assignee: ECOSENSE LIGHTING, INC.Inventors: Aurelien J. F. David, Christophe Hurni, Nathan Young
-
Patent number: 10693041Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: GrantFiled: October 23, 2018Date of Patent: June 23, 2020Assignee: SORAA, INC.Inventors: Michael J. Cich, Aurelien J. F. David, Christophe Hurni, Rafael Aldaz, Michael Ragan Krames
-
Publication number: 20200083403Abstract: Techniques for controlling oxygen concentration levels during annealing of highly-reflective contacts for LED devices together with lamps, LED device and method embodiments thereto are disclosed.Type: ApplicationFiled: July 15, 2019Publication date: March 12, 2020Inventors: CHRISTOPHE HURNI, REMI DELILLE
-
Publication number: 20190386178Abstract: A method of improving high-current density efficiency of an LED, said method comprising: (a) preparing a series of LEDs having decreasing defect densities, wherein each LED of said series has a peak IQE of at least 50%, and wherein each LED of said series has the same epitaxial structure; (b) determining an increase in IQEs at high-current density between at least two LEDs of said series; (c) preparing at least an additional LED of said series by reducing defect density relative to the previously obtained lowest defect density; and (d) reiterating steps (b) and (c) until said increase is at least 3% between two LEDs of said series having a decrease X in defect densities.Type: ApplicationFiled: June 19, 2019Publication date: December 19, 2019Inventors: AURELIEN J.F. DAVID, CHRISTOPHE HURNI, NATHAN YOUNG
-
Patent number: 10490696Abstract: A method of forming a III-Nitride based device comprising: (a) depositing first layers by MOCVD on a substrate, wherein the first layers comprise device layers of III-Nitride material; and (b) depositing epitaxial second layers over the first layers by at least one of sputtering, plasma deposition, pulsed laser deposition, or liquid phase epitaxy, wherein the second layers comprise III-Nitride material and define at least partially a tunnel junction.Type: GrantFiled: August 10, 2017Date of Patent: November 26, 2019Assignee: SORAA, INC.Inventors: Aurelien J. F. David, Mark P. D'Evelyn, Christophe A. Hurni, Nathan Young, Michael J. Cich
-
Patent number: 10468553Abstract: A semiconductor comprising at least one contact, formed on an interface with the semiconductor, the contact comprising at least a layer of a first metal, the first metal being of sufficient amount to impart a first property in the layer; and a second metal diffused in the layer, the second metal having a concentration in the layer sufficiently low such that the second metal does not diminish significantly the first property of the layer, the concentration being sufficiently high such that the second metal imparts significantly a second property in the layer.Type: GrantFiled: December 18, 2015Date of Patent: November 5, 2019Assignee: SORAA, INC.Inventor: Christophe A. Hurni
-
Patent number: 10374122Abstract: Techniques for controlling oxygen concentration levels during annealing of highly-reflective contacts for LED devices together with lamps, LED device and method embodiments thereto are disclosed.Type: GrantFiled: January 30, 2018Date of Patent: August 6, 2019Assignee: SORAA, INC.Inventors: Christophe Hurni, Remi Delille
-
Publication number: 20190165212Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: ApplicationFiled: October 23, 2018Publication date: May 30, 2019Inventors: Michael J. Cich, Aurelien J.F. David, Christophe Hurni, Rafael Aldaz, Michael Ragan Krames
-
Patent number: 10115865Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: GrantFiled: October 17, 2017Date of Patent: October 30, 2018Assignee: Soraa, Inc.Inventors: Michael J. Cich, Aurelien J. F. David, Christophe Hurni, Rafael Aldaz, Michael Ragan Krames
-
Publication number: 20180175240Abstract: Techniques for controlling oxygen concentration levels during annealing of highly-reflective contacts for LED devices together with lamps, LED device and method embodiments thereto are disclosed.Type: ApplicationFiled: January 30, 2018Publication date: June 21, 2018Inventor: CHRISTOPHE HURNI
-
Patent number: 9917227Abstract: Techniques for controlling oxygen concentration levels during annealing of highly-reflective contacts for LED devices together with lamps, LED device and method embodiments thereto are disclosed.Type: GrantFiled: April 27, 2015Date of Patent: March 13, 2018Assignee: Soraa, Inc.Inventors: Christophe Hurni, Remi Delille
-
Publication number: 20180053878Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: ApplicationFiled: October 17, 2017Publication date: February 22, 2018Inventors: Michael J. Cich, Aurelien J.F. David, Christophe Hurni, Rafael Aldaz, Michael Ragan Krames
-
Publication number: 20180047868Abstract: A method of forming a HI-Nitride based device comprising: (a) depositing first layers by MOCVD on a substrate, wherein the first layers comprise device layers of III-Nitride material; and (b) depositing epitaxial second layers over the first layers by at least one of sputtering, plasma deposition, pulsed laser deposition, or liquid phase epitaxy, wherein the second layers comprise III-Nitride material and define at least partially a tunnel junction.Type: ApplicationFiled: August 10, 2017Publication date: February 15, 2018Inventors: AURELIEN J.F. DAVID, MARK P. D'EVELYN, CHRISTOPHE A. HURNI, NATHAN YOUNG, MICHAEL J. CICH
-
Patent number: 9831388Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: GrantFiled: January 27, 2017Date of Patent: November 28, 2017Assignee: Soraa, Inc.Inventors: Michael J. Cich, Aurelien J. F. David, Christophe Hurni, Rafael Aldaz, Michael Ragan Krames
-
Publication number: 20170141268Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: ApplicationFiled: January 27, 2017Publication date: May 18, 2017Inventors: Michael J. Cich, Aurelien J.F. David, Christophe Hurni, Rafael Aldaz, Michael Ragan Krames
-
Patent number: 9590088Abstract: A current aperture vertical electron transistor (CAVET) with ammonia (NH3) based molecular beam epitaxy (MBE) grown p-type Gallium Nitride (p-GaN) as a current blocking layer (CBL). Specifically, the CAVET features an active buried Magnesium (Mg) doped GaN layer for current blocking purposes. This structure is very advantageous for high power switching applications and for any device that requires a buried active p-GaN layer for its functionality.Type: GrantFiled: December 10, 2014Date of Patent: March 7, 2017Assignee: The Regents of the University of CaliforniaInventors: Srabanti Chowdhury, Ramya Yeluri, Christophe Hurni, Umesh K. Mishra, Ilan Ben-Yaacov
-
Patent number: 9583678Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: GrantFiled: February 5, 2015Date of Patent: February 28, 2017Assignee: Soraa, Inc.Inventors: Michael J. Cich, Aurelien J. F. David, Christophe Hurni, Rafael Aldaz, Michael Ragan Krames
-
Publication number: 20150155439Abstract: High-performance light-emitting diode together with apparatus and method embodiments thereto are disclosed. The light emitting diode devices emit at a wavelength of 390 nm to 470 nm or at a wavelength of 405 nm to 430 nm. Light emitting diode devices are characterized by having a geometric relationship (e.g., aspect ratio) between a lateral dimension of the device and a vertical dimension of the device such that the geometric aspect ratio forms a volumetric light emitting diode that delivers a substantially flat current density across the device (e.g., as measured across a lateral dimension of the active region). The light emitting diode devices are characterized by having a current density in the active region of greater than about 175 Amps/cm2.Type: ApplicationFiled: February 5, 2015Publication date: June 4, 2015Inventors: MICHAEL J. CICH, AURELIEN J.F. DAVID, CHRISTOPHE HURNI, RAFAEL ALDAZ, MICHAEL RAGAN KRAMES
-
Publication number: 20150137137Abstract: A current aperture vertical electron transistor (CAVET) with ammonia (NH3) based molecular beam epitaxy (MBE) grown p-type Gallium Nitride (p-GaN) as a current blocking layer (CBL). Specifically, the CAVET features an active buried Magnesium (Mg) doped GaN layer for current blocking purposes. This structure is very advantageous for high power switching applications and for any device that requires a buried active p-GaN layer for its functionality.Type: ApplicationFiled: December 10, 2014Publication date: May 21, 2015Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Srabanti Chowdhury, Ramya Yeluri, Christophe Hurni, Umesh K. Mishra, Ilan Ben-Yaacov