Patents by Inventor Benjamin Cho
Benjamin Cho 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).
-
Patent number: 9691929Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap; a second solar subcell adjacent to the first solar subcell and having a second band gap smaller than the first band gap; a first graded interlayer adjacent to the second solar subcell; the first graded interlayer having a third band gap greater than the second band gap; and a third solar subcell adjacent to the first graded interlayer, the third subcell having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell. A second graded interlayer is provided adjacent to the third solar subcell; the second graded interlayer having a fifth band gap greater than the fourth band gap; and a lower fourth solar subcell is provided adjacent to the second graded interlayer, the lower fourth subcell having a sixth band gap smaller than the fourth band gap such that the fourth subcell is lattice mismatched with respect to the third subcell.Type: GrantFiled: April 2, 2014Date of Patent: June 27, 2017Assignee: SolAero Technologies Corp.Inventors: Arthur Cornfeld, Benjamin Cho
-
Publication number: 20170162739Abstract: The disclosure describes multi-junction solar cell structures that include two or more graded interlayers.Type: ApplicationFiled: February 15, 2017Publication date: June 8, 2017Inventors: Yong Lin, Paul R. Sharps, Arthur Cornfeld, Pravin Patel, Mark A. Stan, Benjamin Cho
-
Patent number: 9634172Abstract: The disclosure describes multi-junction solar cell structures that include two or more graded interlayers.Type: GrantFiled: September 12, 2014Date of Patent: April 25, 2017Assignee: SolAero Technologies Corp.Inventors: Yong Lin, Paul Sharps, Arthur Cornfeld, Pravin Patel, Mark A. Stan, Benjamin Cho
-
Publication number: 20170110612Abstract: The disclosure describes multi-junction solar cell structures that include two or more graded interlayers.Type: ApplicationFiled: September 12, 2014Publication date: April 20, 2017Inventors: Yong Lin, Paul Sharps, Arthur Cornfeld, Pravin Patel, Mark A. Stan, Benjamin Cho
-
Publication number: 20170047466Abstract: The present disclosure provides a multijunction solar cell that includes: a first sequence of layers of semiconductor material forming a first set of one or more solar subcells; a graded interlayer adjacent to said first sequence of layers; a second sequence of layers of semiconductor material forming a second set of one or more solar subcells; and a high band gap contact layer adjacent said second sequence of layers, wherein the high band gap contact layer is composed of p++ type InGaAlAs or InGaAs.Type: ApplicationFiled: February 17, 2015Publication date: February 16, 2017Inventors: Fred Newman, Benjamin Cho, Mark A. Stan, Paul Sharps
-
Publication number: 20160329454Abstract: A multijunction solar cell includes an upper first solar subcell having a first band gap, a second solar subcell having a second band gap smaller than the first band gap, and a first graded interlayer composed of (InxGa1-x)yAl1-yAs adjacent to the second solar subcell. The first graded interlayer has a third band gap greater than the second band gap subject to the constraints of having the in-plane lattice parameter greater or equal to that of the second subcell and less than or equal to that of the third subcell, wherein 0<x<1 and 0<y<1, and x and y are selected such that the band gap of the first graded interlayer remains constant throughout its thickness at 1.5 eV. A third solar subcell is adjacent to the first graded interlayer and has a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell.Type: ApplicationFiled: July 19, 2016Publication date: November 10, 2016Inventors: Pravin Patel, Arthur Cornfeld, John Spann, Mark A. Stan, Benjamin Cho, Paul R. Sharps, Daniel J. Aiken
-
Publication number: 20160190378Abstract: A multijunction solar cell includes an upper first solar subcell, a second solar subcell adjacent to the first solar subcell, a third solar subcell adjacent to the second solar subcell, and a graded interlayer adjacent to the third solar subcell. The graded interlayer has a band gap that is greater than the band gap of the third solar subcell and is composed of a compositionally step-graded series of (InxGa1-x)y Al1-yAs layers with monotonically changing lattice constant, with x and y having respective values such that the band gap of the graded interlayer remains constant throughout its thickness, and wherein 0<x<1 and 0<y<1. A fourth solar subcell is adjacent to the graded interlayer and is lattice mismatched with respect to the third solar subcell. The graded interlayer provides a transition in lattice constant from the third solar subcell to the fourth solar subcell. A lower fifth solar subcell is adjacent to the fourth solar subcell.Type: ApplicationFiled: February 17, 2016Publication date: June 30, 2016Inventors: Arthur Cornfeld, Pravin Patel, Mark A. Stan, Benjamin Cho, Paul R. Sharps, Daniel J. Aiken, John Spann
-
Patent number: 9356176Abstract: A multijunction solar cell having at least four solar subcells includes a first solar subcell having a first band gap. A first graded interlayer adjacent to the first solar subcell and has a second band gap greater than the first band gap and that is constant at 1.5 eV throughout the thickness of the first graded interlayer. A second solar subcell is adjacent to the first graded interlayer and has a third band gap smaller than the first band gap of the first solar subcell. The second solar subcell is lattice mismatched with respect to the first solar subcell. A second graded interlayer is adjacent to the second solar subcell and has a fourth band gap greater than the third band gap of the second solar subcell and that is constant at 1.1 eV throughout the thickness of the second graded interlayer. A third solar subcell is adjacent to the second graded interlayer and has a fifth band gap smaller than the third band gap of the second solar subcell.Type: GrantFiled: July 30, 2015Date of Patent: May 31, 2016Assignee: SolAero Technologies Corp.Inventors: Arthur Cornfeld, Pravin Patel, Mark A. Stan, Benjamin Cho, Paul R. Sharps, Daniel J. Aiken, John Spann
-
Patent number: 9311063Abstract: A method for generating a User Interface (UI) using a unified development environment is disclosed. The method includes providing a UI development menu by a unified development menu provider, the UI development menu being used to develop a UI for configuring and controlling an application screen, generating a source script for configuring and controlling an application screen to generate a unified component independent of execution environments, upon receipt of a user input through the UI development menu, and generating a unified component independent of execution environments using the source script and a pre-installed or downloaded element source matching with a current execution environment by a component generator of a user device, upon execution of an application.Type: GrantFiled: October 29, 2013Date of Patent: April 12, 2016Assignee: TOBESOFT CO., LTD.Inventors: Hwajun Song, Benjamin Cho
-
Publication number: 20160013348Abstract: A multijunction solar cell having at least four solar subcells includes a first solar subcell having a first band gap, and a first graded interlayer adjacent to the first solar subcell, wherein the first graded interlayer has a second band gap greater than the first band gap and that is constant at 1.5 eV throughout the thickness of the first graded interlayer. A second solar subcell is adjacent to the first graded interlayer, wherein the second solar subcell has a third band gap smaller than the first band gap of the first solar subcell and wherein said second solar subcell is lattice mismatched with respect to the first solar subcell. A second graded interlayer is adjacent to the second solar subcell, wherein the second graded interlayer has a fourth band gap greater than the third band gap of the second solar subcell and that is constant at 1.1 eV throughout the thickness of the second graded interlayer.Type: ApplicationFiled: July 30, 2015Publication date: January 14, 2016Inventors: Arthur Cornfeld, Pravin Patel, Mark A. Stan, Benjamin Cho, Paul R. Sharps, Daniel J. Aiken, John Spann
-
Patent number: 9117966Abstract: A multijunction solar cell including an upper first solar subcell, and the base-emitter junction of the upper first solar subcell being a homojunction; a second solar subcell adjacent to said first solar subcell; a third solar subcell adjacent to said second solar subcell. A first graded interlayer is provided adjacent to said third solar subcell. A fourth solar subcell is provided adjacent to said first graded interlayer, said fourth subcell is lattice mismatched with respect to said third subcell. A second graded interlayer is provided adjacent to said fourth solar subcell; and a lower fifth solar subcell is provided adjacent to said second graded interlayer, said lower fifth subcell is lattice mismatched with respect to said fourth subcell.Type: GrantFiled: February 21, 2012Date of Patent: August 25, 2015Assignee: SolAero Technologies Corp.Inventors: Arthur Cornfeld, John Spann, Pravin Patel, Mark A. Stan, Benjamin Cho, Paul R. Sharps, Daniel J. Aiken
-
Publication number: 20150107658Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap; a second solar subcell adjacent to the first solar subcell and having a second band gap smaller than the first band gap; a first graded interlayer adjacent to the second solar subcell; the first graded interlayer having a third band gap greater than the second band gap; and a third solar subcell adjacent to the first graded interlayer, the third subcell having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell. A second graded interlayer is provided adjacent to the third solar subcell; the second graded interlayer having a fifth band gap greater than the fourth band gap; and a lower fourth solar subcell is provided adjacent to the second graded interlayer, the lower fourth subcell having a sixth band gap smaller than the fourth band gap such that the fourth subcell is lattice mismatched with respect to the third subcell.Type: ApplicationFiled: April 2, 2014Publication date: April 23, 2015Applicant: Emcore Soloar Power, Inc.Inventors: Arthur Cornfeld, Benjamin Cho
-
Publication number: 20150090321Abstract: A method of forming a multijunction solar cell comprising at least an upper subcell, a middle subcell, and a lower subcell, the method including forming a first alpha layer over said middle solar subcell using a surfactant and dopant including selenium, the first alpha layer configured to prevent threading dislocations from propagating; forming a metamorphic grading interlayer over and directly adjacent to said first alpha layer; forming a second alpha layer using a surfactant and dopant including selenium over and directly adjacent to said grading interlayer to prevent threading dislocations from propagating; and forming a lower solar subcell over said grading interlayer such that said lower solar subcell is lattice mismatched with respect to said middle solar subcell.Type: ApplicationFiled: October 2, 2013Publication date: April 2, 2015Applicant: Emcore Solar Power, Inc.Inventors: Benjamin Cho, Yong Lin, Pravin Patel, Mark A. Stan, Arthur Cornfeld, Daniel McGlynn, Fred Newman
-
Patent number: 8969712Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap; a second solar subcell adjacent to the first solar subcell and having a second band gap smaller than the first band gap; a graded interlayer adjacent to the second solar subcell, the graded interlayer having a third band gap greater than the second band gap; and a third solar subcell adjacent to the graded interlayer, the third subcell having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell. A lower fourth solar subcell is provided adjacent to the third subcell and lattice matched thereto, the lower fourth subcell having a fifth band gap smaller than the fourth band gap.Type: GrantFiled: May 3, 2012Date of Patent: March 3, 2015Assignee: SolAero Technologies Corp.Inventors: Fred Newman, Benjamin Cho, Mark A. Stan, Paul Sharps
-
Publication number: 20140149964Abstract: A method for generating a User Interface (UI) using a unified development environment is disclosed. The method includes providing a UI development menu by a unified development menu provider, the UI development menu being used to develop a UI for configuring and controlling an application screen, generating a source script for configuring and controlling an application screen to generate a unified component independent of execution environments, upon receipt of a user input through the UI development menu, and generating a unified component independent of execution environments using the source script and a pre-installed or downloaded element source matching with a current execution environment by a component generator of a user device, upon execution of an application.Type: ApplicationFiled: October 29, 2013Publication date: May 29, 2014Applicant: TOBESOFT CO.,LTDInventors: Hwajun Song, Benjamin Cho
-
Publication number: 20130327378Abstract: A multijunction solar cell including a first solar subcell having a first band gap and a first short-circuit current; a second solar subcell disposed over the first solar subcell and having a second band gap greater than the first band gap and a second short-circuit current greater than the first short-circuit current by an amount in the range of 2% to 6%; a third solar subcell disposed over the second solar subcell and having a third band gap greater than the second band gap and a third short-circuit current less than the first short-circuit current by an amount in the range of 2% to 6%; and a fourth solar subcell disposed over the third solar subcell having a fourth band gap greater than the third band gap, and a fourth short-circuit current less than the third short-circuit current by an amount in the range of 6% to 10%, so that at an “end of life” state of the multijunction solar cell in an AM0 space environment the short-circuit current of each of the subcells are substantially identical.Type: ApplicationFiled: June 7, 2012Publication date: December 12, 2013Applicant: EMCORE SOLAR POWER, INC.Inventors: Pravin Patel, Benjamin Cho
-
Publication number: 20130327382Abstract: A multijunction solar cell for a space radiation environment, the multijunction solar cell having a plurality of solar sub-cells arranged in order of decreasing band gap including: a first solar subcell composed of InGaP and having a first band gap, the first solar subcell having a first short circuit current associated therewith; a second solar subcell composed of GaAs and having a second band gap which is less than the first band gap, the second solar subcell having a second short circuit current associated therewith; wherein in a beginning of life state the first short circuit current is less than the second short circuit current such that the AM0 conversion efficiency is sub-optimal. However, in an end of life state, the short circuit current are substantially matched, which results in an improved AM0 conversion efficiency.Type: ApplicationFiled: July 15, 2013Publication date: December 12, 2013Inventors: Pravin Patel, Benjamin Cho
-
Publication number: 20120211068Abstract: A multijunction solar cell including an upper first solar subcell, and the base-emitter junction of the upper first solar subcell being a homojunction; a second solar subcell adjacent to said first solar subcell; a third solar subcell adjacent to said second solar subcell. A first graded interlayer is provided adjacent to said third solar subcell. A fourth solar subcell is provided adjacent to said first graded interlayer, said fourth subcell is lattice mismatched with respect to said third subcell. A second graded interlayer is provided adjacent to said fourth solar subcell; and a lower fifth solar subcell is provided adjacent to said second graded interlayer, said lower fifth subcell is lattice mismatched with respect to said fourth subcell.Type: ApplicationFiled: February 21, 2012Publication date: August 23, 2012Applicant: Emcore Solar Power, Inc.Inventors: Arthur Cornfeld, John Spann, Pravin Patel, Mark A. Stan, Benjamin Cho, Paul R. Sharps, Daniel J. Aiken
-
Publication number: 20120211071Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap; a second solar subcell adjacent to the first solar subcell and having a second band gap smaller than the first band gap; a graded interlayer adjacent to the second solar subcell, the first graded interlayer having a third band gap greater than the second band gap; and a third solar subcell adjacent to the graded interlayer, the third subcell having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell. A lower fourth solar subcell is provided adjacent to the third subcell and lattice matched thereto, the lower fourth subcell having a fifth band gap smaller than the fourth band gap.Type: ApplicationFiled: May 3, 2012Publication date: August 23, 2012Applicant: Emcore Solar Power, Inc.Inventors: Fred Newman, Benjamin Cho, Mark A. Stan, Paul Sharps
-
Publication number: 20100229926Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap; a second solar subcell adjacent to the first solar subcell and having a second band gap smaller than the first band gap; a graded interlayer adjacent to the second solar subcell; the first graded interlayer having a third band gap greater than the second band gap; and a third solar subcell adjacent to the graded interlayer, the third subcell having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell. A lower fourth solar subcell is provided adjacent to the third subcell and lattice matched thereto, the lower fourth subcell having a fifth band gap smaller than the fourth band gap.Type: ApplicationFiled: March 10, 2009Publication date: September 16, 2010Applicant: Emcore Solar Power, Inc.Inventors: Fred Newman, Benjamin Cho, Mark A. Stan, Paul Sharps