Patents by Inventor Dong-Seop Kim
Dong-Seop Kim 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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Publication number: 20130104974Abstract: A solar cell includes a silicon substrate including a front surface for receiving light, and a rear surface opposite the front surface, an emitter diffusion region on the rear surface and doped with a first polarity that is opposite to a polarity of the silicon substrate, a base diffusion region on the rear surface of the substrate and doped with a second polarity that is the same as the polarity of the silicon substrate, and an insulation gap between the emitter diffusion region and the base diffusion region, wherein the base diffusion region has a closed polygonal shape, and wherein the insulation gap is adjacent the base diffusion region.Type: ApplicationFiled: September 14, 2012Publication date: May 2, 2013Inventors: Young-Su Kim, Dong-Seop Kim, Doo-Youl Lee, Young-Jin Kim, Young-Sang Park, Chan-Bin Mo, Sung-Chul Lee
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Publication number: 20130095597Abstract: A method of manufacturing a solar cell including providing a semiconductor substrate having a first conductivity type; performing a first deposition process that includes forming a first doping material layer having a second conductivity type different from the first conductivity type; performing a drive-in process that includes heating the substrate having the first doping material layer thereon; performing a second deposition process after performing the drive-in process and including forming a second doping material layer on the first doping material layer, wherein the second doping material layer has the second conductivity type; locally heating portions of the substrate, the first doping material layer, and the second doping material layer with a laser to form a contact layer at a first surface of the substrate; and forming a first electrode on the contact layer and a second electrode on a second surface of the substrate opposite to the first surface.Type: ApplicationFiled: August 7, 2012Publication date: April 18, 2013Inventors: Sang-Jin Park, Min-Chul Song, Sung-Chan Park, Dong-Seop Kim, Won-Gyun Kim, Sang-Won Seo
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Publication number: 20130092224Abstract: A photoelectric device includes a first semiconductor structure and a second semiconductor structure on a substrate, and the first semiconductor structure includes a different conductivity type from the second semiconductor structure. The photoelectric device also includes a first electrode on the first semiconductor structure and a second electrode on the second semiconductor structure, and an interlayer insulating structure adjacent to the second semiconductor structure. The interlayer insulating structure separates the first semiconductor structure from the second semiconductor structure and separates the first semiconductor structure from the second electrode.Type: ApplicationFiled: March 20, 2012Publication date: April 18, 2013Inventors: Doo-Youl LEE, Young-Jin Kim, Dong-Seop Kim, Chan-Bin Mo, Young-Su Kim, Young-Sang Park
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Publication number: 20120145232Abstract: Provided is a solar cell including: a semiconductive base layer having a first conductivity type; a semiconductive emitter layer disposed on top of the base layer and having a second conductivity type opposite to the first conductivity type; a front electrode disposed on top of the emitter layer; a passivation layer disposed under the base layer and including a contact hole exposing the base layer; and a rear electrode disposed under the passivation layer and connected with the base layer through the contact hole, wherein the rear electrode comprises a silicon (Si)-aluminum (Al) eutectic alloy powder.Type: ApplicationFiled: April 20, 2011Publication date: June 14, 2012Inventors: Yu Kyung KIM, Dong Seop Kim
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Publication number: 20120149144Abstract: A method for manufacturing a solar cell is presented. The method includes: forming an amorphous silicon layer on a first surface of a light absorbing layer; doping the amorphous silicon layer with a dopant; forming a dopant layer by diffusing the dopant into the amorphous silicon layer with a laser; forming a semiconductor layer by removing the dopant that remains outside the dopant layer; etching the surface of the semiconductor layer by using an etchant; forming a first electrode on the semiconductor layer; and forming a second electrode on a second surface of the light absorbing layer.Type: ApplicationFiled: October 18, 2011Publication date: June 14, 2012Inventors: Myung-Su KIM, Min-Chul Song, Soon-Young Park, Dong-Seop Kim, Sung Chan Park, Yoon-Mook Kang, Tae-Jun Kim, Min-Ki Shin, Sang-Won Lee, Heung-Kyoon Lim
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Publication number: 20120129295Abstract: Disclosed herein is a photoelectric conversion device having a semiconductor substrate including a front side and back side, a protective layer formed on the front side of the semiconductor substrate, a first non-single crystalline semiconductor layer formed on the back side of the semiconductor substrate, a first conductive layer including a first impurity formed on a first portion of a back side of the first non-single crystalline semiconductor layer, and a second conductive layer including the first impurity and a second impurity formed on a second portion of the back side of the first non-single crystalline semiconductor layer.Type: ApplicationFiled: January 27, 2012Publication date: May 24, 2012Applicants: SAMSUNG SDI CO., LTD., SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Seok OH, Jung-Tae Kim, Nam-Kyu Song, Min Park, Yun-Seok Lee, Czang-Ho Lee, Myung-Hun Shin, Byoung-Kyu Lee, Yuk-Hyun Nam, Seung-Jae Jung, Mi-Hwa Lim, Joon-Young Seo, Dong-Uk Choi, Dong-Seop Kim, Byoung-June Kim
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Publication number: 20120107997Abstract: In a method of manufacturing a solar cell, a first dopant layer is formed on a lower surface of a substrate and a diffusion-preventing layer is formed on an upper surface of the substrate. Then, the first dopant layer is patterned to expose portions of the lower surface of the substrate, and a second dopant layer is formed on the exposed portion of the lower surface of the substrate. A third dopant layer is formed on the diffusion-preventing layer, and the substrate is heated to diffuse dopants from the first, second, and third dopant layers into the substrate, thereby forming semiconductor areas in the substrate.Type: ApplicationFiled: September 21, 2011Publication date: May 3, 2012Inventors: Young-Jin KIM, Dong-Seop Kim, Doo-Youl Lee, Jun-Hyun Park, Sang-Ho Kim, Ju-Hyun Jeong, Young-Soo Kim, Chan-Bin Mo, Young-Su Kim, Myeong-Woo Kim, Sang-Joon Lee
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Publication number: 20120012176Abstract: A solar cell includes a substrate, a doped pattern, a contact layer, and an electrode. The substrate includes a first surface onto which sunlight is incident and a second surface facing the first surface. The doped pattern is formed on the second surface of the substrate and the contact layer is formed on the doped pattern. The electrode is formed on the contact layer and is electrically connected to the doped pattern. Accordingly, a contact resistance between the substrate and the electrode may be decreased, so that the doped pattern and the electrode may be uniformly formed and a power efficiency of the solar cell may be improved.Type: ApplicationFiled: May 13, 2011Publication date: January 19, 2012Inventors: Young-Jin Kim, Dong-Seop Kim, Doo-Youl Lee, Jun-Hyun Park, Sang-Ho Kim, Ju-Hyun Jeong, Young-Soo Kim, Chan-Bin Mo, Young-Su Kim, Myeong-Woo Kim, Sang-Joon Lee
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Publication number: 20110048529Abstract: A solar cell includes a semiconductor substrate having a plurality of contact holes penetrating therethrough, from one surface to the opposing surface and including a part having a first conductive layer selected from p-type and n-type and a part having a second conductive layer different from the first conductive layer and selected from p-type and n-type semiconductor, a first electrode formed on one surface of the semiconductor substrate and electrically connected with the part having the first conductive layer, a second electrode formed on the other surface of the semiconductor substrate and electrically connected with the first electrode, and a third electrode formed on the same surface as in the second electrode and electrically connected with the part having the second conductive layer of the semiconductor substrate, wherein the plurality of contact holes form a contact hole group, and the first electrode and the second electrode are connected through one or more of the plurality of contact holes of theType: ApplicationFiled: July 1, 2010Publication date: March 3, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Doo-Youl Lee, Dong-Seop Kim, Jin-Wook Lee, Hwa-Young Ko
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Publication number: 20100233840Abstract: Devices, solar cell structures, and methods of fabrication thereof, are disclosed. Briefly described, one exemplary embodiment of the device, among others, includes: a co-fired p-type silicon substrate, wherein the bulk lifetime is about 20 to 125 ?s; an n+ layer formed on the top-side of the p-silicon substrate; a silicon nitride anti-reflective (AR) layer positioned on the top-side of the n+ layer; a plurality of Ag contacts positioned on portions of the silicon nitride AR layer, wherein the Ag contacts are in electronic communication with the n+-type emitter layer; an uniform Al back-surface field (BSF or p+) layer positioned on the back-side of the p-silicon substrate on the opposite side of the p-type silicon substrate as the n+ layer; and an Al contact layer positioned on the back-side of the Al BSF layer. The device has a fill factor (FF) of about 0.75 to 0.85, an open circuit voltage (VOC) of about 600 to 650 mV, and a short circuit current (JSC) of about 28 to 36 mA/cm2.Type: ApplicationFiled: April 12, 2010Publication date: September 16, 2010Inventors: Ajeet Rohatgi, Ji-Weon Jeong, Kenta Nakayashiki, Vijay Yelundur, Dong Seop Kim, Mohamed Hilali
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Patent number: 7790574Abstract: Disclosed are various embodiments that include a process, an arrangement, and an apparatus for boron diffusion in a wafer. In one representative embodiment, a process is provided in which a boric oxide solution is applied to a surface of the wafer. Thereafter, the wafer is subjected to a fast heat ramp-up associated with a first heating cycle that results in a release of an amount of boron for diffusion into the wafer.Type: GrantFiled: December 13, 2005Date of Patent: September 7, 2010Assignee: Georgia Tech Research CorporationInventors: Ajeet Rohatgi, Dong Seop Kim, Kenta Nakayashiki, Brian Rounsaville
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Publication number: 20100186811Abstract: An antireflective coating for silicon-based solar cells comprising amorphous silicon carbonitride, wherein the amount of carbon in the silicon carbonitride is from 5 to 25%, a solar cell comprising the antireflective coating, and a method of preparing the antireflective coating.Type: ApplicationFiled: August 25, 2009Publication date: July 29, 2010Applicant: Sixtron Advanced Materials, Inc.Inventors: Dong Seop Kim, Moon Hee Kang, Ajeet Rohatgi, Michael Davies, Junegie Hong, Genowefa Jakubowska-Okoniewski, Abasifreke Udo Ebong
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Publication number: 20100154869Abstract: Disclosed herein is a photoelectric conversion device having a semiconductor substrate including a front side and back side, a protective layer formed on the front side of the semiconductor substrate, a first non-single crystalline semiconductor layer formed on the back side of the semiconductor substrate, a first conductive layer including a first impurity formed on a first portion of a back side of the first non-single crystalline semiconductor layer, and a second conductive layer including the first impurity and a second impurity formed on a second portion of the back side of the first non-single crystalline semiconductor layer.Type: ApplicationFiled: June 2, 2009Publication date: June 24, 2010Inventors: Min-Seok Oh, Jung-Tae Kim, Nam-Kyu Song, Min Park, Yun-Seok Lee, Czang-Ho Lee, Myung-Hun Shin, Byoung-Kyu Lee, Yuk-Hyun Nam, Seung-Jae Jung, Mi-Hwa Lim, Joon-Young Seo, Dong-Uk Choi, Dong-Seop Kim, Byoung-June Kim
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Publication number: 20100154872Abstract: A solar cell and a method of fabricating the same are provided according to one or more embodiments. According to an embodiment, the solar cell includes a substrate, a back electrode layer formed on the substrate, a light absorbing layer formed on the back electrode layer, and a transparent electrode layer formed on the light absorbing layer, wherein the light absorbing layer is comprised of copper (Cu), gallium (Ga), indium (In), sulfur (S), and selenium (Se) and includes a first concentration region in which concentrations of sulfur (S) gradually decrease in the light absorbing layer going in a first direction from the back electrode layer to the transparent electrode layer.Type: ApplicationFiled: December 10, 2009Publication date: June 24, 2010Inventors: Gug-Il JUN, Woo-Su Lee, Dong-Seop Kim, Jin-Seock Kim, Byoung-Dong Kim, Kang-Hee Lee, Dong-Gi Ahn, Byung-Joo Lee, Hyoung-Jin Park, In-Ki Kim
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Publication number: 20100051096Abstract: An antireflective coating for silicon-based solar cells comprising amorphous silicon carbonitride, wherein the amount of carbon in the silicon carbonitride is from 5 to 25%, a solar cell comprising the antireflective coating, and a method of preparing the antireflective coating.Type: ApplicationFiled: November 28, 2008Publication date: March 4, 2010Applicant: Sixtron Advanced Materials, Inc.Inventors: Dong Seop Kim, Moon Hee Kang, Ajeet Rohatgi, Michael Davies, Junegie Hong, Genowefa Jakubowska-Okoniewski, Abasifreke Ebong
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Publication number: 20050189015Abstract: Devices, solar cell structures, and methods of fabrication thereof, are disclosed. Briefly described, one exemplary embodiment of the device, among others, includes: a co-fired p-type silicon substrate, wherein the bulk lifetime is about 20 to 125 ?s; an n+ layer formed on the top-side of the p-silicon substrate; a silicon nitride anti-reflective (AR) layer positioned on the top-side of the n+ layer; a plurality of Ag contacts positioned on portions of the silicon nitride AR layer, wherein the Ag contacts are in electronic communication with the n+-type emitter layer; an uniform Al back-surface field (BSF or p+) layer positioned on the back-side of the p-silicon substrate on the opposite side of the p-type silicon substrate as the n+ layer; and an Al contact layer positioned on the back-side of the Al BSF layer. The device has a fill factor (FF) of about 0.75 to 0.85, an open circuit voltage (VOC) of about 600 to 650 mV, and a short circuit current (JSC) of about 28 to 36 mA/cm2.Type: ApplicationFiled: October 29, 2004Publication date: September 1, 2005Inventors: Ajeet Rohatgi, Ji-Weon Jeong, Kenta Nakayashiki, Vijay Yelundur, Dong Seop Kim, Mohamed Hilali
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Patent number: 6696739Abstract: A pn junction solar cell includes a pn junction structure including a p-type and a n-type semiconducting layer, a front contact electrode formed on the front surface of the pn junction structure through a contact pattern having a constant width, and a rear contact electrode formed on a rear surface of the pn structure. The front contact electrode is reduced in its width as it goes away from a terminal.Type: GrantFiled: December 31, 2001Date of Patent: February 24, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Eun-Joo Lee, Dong-Seop Kim, Soo-Hong Lee
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Patent number: 6663944Abstract: A textured semiconductor wafer for a solar cell includes a plurality of grooves being formed on a surface of the semiconductor wafer. The grooves are formed in the step of depositing a protector in the form of islands on the surface by spray process or screen-printing process, dipping the wafer into an isotropic etching solution to etch a portion of the surface where the protector is not deposited, and removing the protector.Type: GrantFiled: November 26, 2001Date of Patent: December 16, 2003Assignee: Samsung SDI Co., Ltd.Inventors: Sang-Wook Park, Dong-Seop Kim, Soo-Hong Lee
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Patent number: 6639143Abstract: A solar cell using a ferroelectric material(s) is provided with a ferroelectric layer at the front surface or the rear surface thereof, or at the front and the rear surfaces thereof. The ferroelectric layer is formed with a ferroelectric material such as BaTiO3, BST((Ba,Sr)TiO3), PZT((Pb,Zr)TiO3) and SBT(SrBi2Ta2O7).Type: GrantFiled: May 15, 2002Date of Patent: October 28, 2003Assignee: Samsung SDI Co. Ltd.Inventors: Jeong Kim, Dong-Seop Kim, Soo-Hong Lee
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Publication number: 20030037815Abstract: A solar cell using a ferroelectric material(s) is provided with a ferroelectric layer at the front surface or the rear surface thereof, or at the front and the rear surfaces thereof. The ferroelectric layer is formed with a ferroelectric material such as BaTiO3, BST((Ba,Sr)TiO3), PZT((Pb,Zr)TiO3) and SBT(SrBi2Ta2O7).Type: ApplicationFiled: May 15, 2002Publication date: February 27, 2003Inventors: Jeong Kim, Dong-Seop Kim, Soo-Hong Lee