Patents by Inventor Eun-Chel Cho
Eun-Chel 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).
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Patent number: 10861987Abstract: Proposed is a method for manufacturing a selective emitter using a surface structure, the method includes: preparing a wafer; forming fine first surface unevenness in each of front and rear faces of the wafer; forming a texturing-inhibiting film on each of the front and rear faces of the wafer; partially patterning the front texturing-inhibiting film to expose a portion of the front face of the wafer; forming second surface unevenness in the exposed portion of the wafer, wherein the second surface unevenness has a roughness greater and deeper than a roughness of the first surface unevenness; removing the texturing-inhibiting films; and forming a selective emitter on a surface of the wafer having the first surface unevenness and the second surface unevenness defined therein using a doping process.Type: GrantFiled: September 6, 2019Date of Patent: December 8, 2020Assignee: Research & Business Foundation Sungkyunkwan UniversityInventors: Junsin Yi, Minkyu Ju, Young-Hyun Cho, Eun-Chel Cho, Youngkuk Kim, Kumar Mallem
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Publication number: 20200135944Abstract: Proposed is a method for manufacturing a selective emitter using a surface structure, the method includes: preparing a wafer; forming fine first surface unevenness in each of front and rear faces of the wafer; forming a texturing-inhibiting film on each of the front and rear faces of the wafer; partially patterning the front texturing-inhibiting film to expose a portion of the front face of the wafer; forming second surface unevenness in the exposed portion of the wafer, wherein the second surface unevenness has a roughness greater and deeper than a roughness of the first surface unevenness; removing the texturing-inhibiting films; and forming a selective emitter on a surface of the wafer having the first surface unevenness and the second surface unevenness defined therein using a doping process.Type: ApplicationFiled: September 6, 2019Publication date: April 30, 2020Applicant: Research & Business Foundation Sungkyunkwan UniversityInventors: Junsin YI, Minkyu JU, Young-Hyun CHO, Eun-Chel CHO, Youngkuk KIM, Kumar MALLEM
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Patent number: 8481356Abstract: A method for manufacturing a back contact solar cell according to the present invention comprises the following steps: preparing a p-type silicon substrate having a via hole; performing a diffusion process to form an emitter layer all over the surface of the substrate; forming an etching mask on the front surface and back surface of the substrate so as to selectively expose a portion of the substrate; etching a portion of the thickness of the substrate in the region exposed to the etching mask so as to remove an emitter layer in the relevant region; forming an anti-reflection film on the front surface of the substrate; and forming a grid electrode on the front surface of the substrate, and forming an n-electrode and a p-electrode on the back surface of the substrate.Type: GrantFiled: December 17, 2010Date of Patent: July 9, 2013Assignee: Hyundai Heavy Industries Co., Ltd.Inventors: In Sic Moon, Eun Chel Cho, Won Jae Lee, Jong Keun Lim
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Patent number: 8461011Abstract: The present disclosure relates to a method for manufacturing a back electrode-type solar cell. The method for manufacturing a back electrode-type solar cell disclosed herein includes: A method for manufacturing a back electrode-type solar cell, comprising: preparing an n-type crystalline silicon substrate; forming a thermal diffusion control film on a front surface, a back surface and a side surface of the substrate; forming a p-type impurity region by implanting p-type impurity ions onto the back surface of the substrate; patterning the thermal diffusion control film so that the back surface of the substrate is selectively exposed; and forming a high-concentration back field layer (n+) at an exposed region of the back surface of the substrate and a low-concentration front field layer (n?) at the front surface of the substrate by performing a thermal diffusion process, and forming a p+ emitter region by activating the p-type impurity region.Type: GrantFiled: January 18, 2011Date of Patent: June 11, 2013Assignee: Hyundai Heavy Industries Co., Ltd.Inventors: Min Sung Jeon, Won Jae Lee, Eun Chel Cho, Joon Sung Lee
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Publication number: 20120288980Abstract: A method for manufacturing a back contact solar cell according to the present invention comprises the following steps: preparing a p-type silicon substrate having a via hole; performing a diffusion process to form an emitter layer all over the surface of the substrate; forming an etching mask on the front surface and back surface of the substrate so as to selectively expose a portion of the substrate; etching a portion of the thickness of the substrate in the region exposed to the etching mask so as to remove an emitter layer in the relevant region; forming an anti-reflection film on the front surface of the substrate; and forming a grid electrode on the front surface of the substrate, and forming an n-electrode and a p-electrode on the back surface of the substrate.Type: ApplicationFiled: December 17, 2010Publication date: November 15, 2012Applicant: HYUNDAI HEAVY INDUSTRIES CO., LTD.Inventors: In Sic Moon, Eun Chel Cho, Won Jae Lee, Jong Keun Lim
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Publication number: 20120282732Abstract: The present disclosure relates to a method for manufacturing a back electrode-type solar cell. The method for manufacturing a back electrode-type solar cell disclosed herein includes: A method for manufacturing a back electrode-type solar cell, comprising: preparing an n-type crystalline silicon substrate; forming a thermal diffusion control film on a front surface, a back surface and a side surface of the substrate; forming a p-type impurity region by implanting p-type impurity ions onto the back surface of the substrate; patterning the thermal diffusion control film so that the back surface of the substrate is selectively exposed; and forming a high-concentration back field layer (n+) at an exposed region of the back surface of the substrate and a low-concentration front field layer (n?) at the front surface of the substrate by performing a thermal diffusion process, and forming a p+ emitter region by activating the p-type impurity region.Type: ApplicationFiled: January 18, 2011Publication date: November 8, 2012Applicant: HYUNDAI HEAVY INDUSTRIES CO., LTD.Inventors: Min Sung Jeon, Won Jae Lee, Eun Chel Cho, Joon Sung Lee
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Publication number: 20120270356Abstract: The present invention provides a method for manufacturing a solar cell. The method for manufacturing a solar cell comprises: forming via holes in a silicon wafer; forming a shallow emitter on the front surface and the rear surface of the wafer, connecting the inner walls of the via holes and the via holes; and selectively forming an emitter through the heavy doping of a dopant to provide a plurality of regions along a direction linking the via holes of the shallow emitter with a certain concentration or higher. Accordingly, the present invention can selectively form an emitter on an MWT solar cell by performing laser doping or etching on a region contacting a front surface electrode having a certain width and height.Type: ApplicationFiled: May 13, 2010Publication date: October 25, 2012Applicant: HYUNDAI HEAVY INDUSTRIES CO., LTD.Inventors: In-Sik Moon, Eun-Chel Cho, Won-Jae Lee
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Patent number: 7884375Abstract: A solar cell and a manufacturing method thereof. A method of manufacturing a solar cell includes: forming an emitter layer on a first surface of a semiconductor substrate; forming an insulation layer on the emitter layer; applying a chemical compound including a dopant having a conductive type of the emitter layer on the insulation layer according to a pattern; forming a high concentration emitter portion by removing a portion of the insulation layer corresponding to a positioning of the chemical compound and diffusing the dopant toward the emitting layer; removing the chemical compound; and forming a first electrode electrically connected to the high concentration emitter portion.Type: GrantFiled: December 28, 2006Date of Patent: February 8, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Sang-Wook Park, Dae-Won Kim, Eun-Chel Cho
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Publication number: 20070290283Abstract: A solar cell and a manufacturing method thereof. A method of manufacturing a solar cell includes: forming an emitter layer on a first surface of a semiconductor substrate; forming an insulation layer on the emitter layer; applying a chemical compound including a dopant having a conductive type of the emitter layer on the insulation layer according to a pattern; forming a high concentration emitter portion by removing a portion of the insulation layer corresponding to a positioning of the chemical compound and diffusing the dopant toward the emitting layer; removing the chemical compound; and forming a first electrode electrically connected to the high concentration emitter portion.Type: ApplicationFiled: December 28, 2006Publication date: December 20, 2007Inventors: Sang-Wook Park, Dae-Won Kim, Eun-Chel Cho