Patents by Inventor Jin-Su Yoo
Jin-Su Yoo 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: 20200168753Abstract: The present invention relates to an encapsulant capable of reducing potential-induced degradation (PID). The encapsulant is used to seal a solar cell to form a photovoltaic module, in which silica gel is dispersed in the encapsulant as a sodium ion adsorbent. Since the silica gel that is highly transparent is used as the sodium ion adsorbent, it is possible to prevent PID attributable to sodium ions and to prevent deterioration in photovoltaic efficiency of the photovoltaic module. Since the silica gel has a high specific surface area, it is possible to adsorb sodium ions with a small amount of the silica gel.Type: ApplicationFiled: January 21, 2020Publication date: May 28, 2020Inventors: Young-joo Eo, Jihye Gwak, Se-jin Ahn, Ara Cho, Jin-su Yoo, Jun-sik Cho, Seung-kyu Ahn, Joo-hyung Park, Kihwan Kim, Donghyeop Shin, Soo Min Song, Inyoung Jeong, Sang Min Lee
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Patent number: 10465868Abstract: A jig for a sample for a solar photovoltaic device is disclosed. The jig includes a cradle unit supporting the sample and a contact unit including at least one probe pin coming into contact with a busbar of the sample located in the cradle unit. The contact unit includes a coupling plate coupled with the cradle unit and at least one contact bar including a PCB and connected to the coupling plate, the contact bar having at least one probe pin aligned with the busbar of the sample with interposition of a probe pin connecting block. the jig includes a rotation support unit coupled with the cradle unit by a rotation shaft to allow the cradle unit to be rotated at an angle of 180° or greater so that upper and lower surfaces of the sample supported by the cradle unit are reversed.Type: GrantFiled: October 19, 2017Date of Patent: November 5, 2019Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Seung-kyu Ahn, Jun-sik Cho, Jae-ho Yun, Se-jin Ahn, Jihye Gwak, Jin-su Yoo, Joo-hyung Park, Young-joo Eo, Ara Cho, Kihwan Kim
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Patent number: 10415134Abstract: Disclosed is a crucible that exhibits stable evaporation efficiency and durability with respect to Al, is used in an evaporation source of an electron-beam evaporator, and includes a storage unit, which includes a wall and a bottom and in which a deposition material is placed, and a wetting prevention unit that includes another wall, which is taller than the wall of the storage unit, and another bottom, and is combined with an exterior of the storage unit. The wetting prevention unit is provided so that only the wall of the storage unit is wet with Al, and accordingly, the lifespan of the crucible is lengthened. Further, contact with the ceramic material in order to prevent wetting is minimized, thereby preventing a reduction in the physical properties of the thin film due to the impurities mixed with the deposited Al.Type: GrantFiled: July 7, 2016Date of Patent: September 17, 2019Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ki-hwan Kim, Jun-Sik Cho, Ara Cho, Jae-Ho Yun, Kyung Hoon Yoon, Jin-su Yoo, Young-Joo Eo, Seoung-Kyu Ahn, Sejin Ahn, Kee Shik Shin, Joo-Hyung Park, Jihye Gwak
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Patent number: 10283654Abstract: A method of manufacturing a CIGS-based solar cell including a transparent rear electrode, the method comprising forming a rear electrode layer including a transparent oxide material; forming rear electrode patterns including a metal material on the rear electrode layer; forming a CIGS-based light absorption layer on the rear electrode layer on which the rear electrode patterns are formed; forming a buffer layer on the light absorption layer; and forming a front electrode including a transparent material on the buffer layer, wherein the rear electrode patterns are provided with a transmissive portion, through which light is transmitted, formed between patterns of the metal material.Type: GrantFiled: November 29, 2016Date of Patent: May 7, 2019Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Kihwan Kim, Jae-ho Yun, Jihye Gwak, Seung-kyu Ahn, Jun-Sik Cho, Joo-hyung Park, Young-Joo Eo, Jin-su Yoo, Se-jin Ahn, Ara Cho
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Patent number: 10056512Abstract: Disclosed is a method of forming a chalcogen compound thin film suitable for use in a light-absorption layer of a solar cell. The method includes manufacturing a precursor liquid including an Sn precursor material and an S precursor material, applying the precursor liquid to form a precursor film, and heat-treating the precursor film. The Sn precursor material and the S precursor material are liquid materials. The present invention provides a method of forming a chalcogen compound thin film using a liquid precursor material without a sulfurization process, thereby forming a high-quality SnS thin film at low cost using a process which is suitable for mass production. Further, the light-absorption layer is formed using a process which is suitable for mass production, thus enabling the manufacture of a solar cell including the chalcogen compound thin film at low cost.Type: GrantFiled: July 14, 2016Date of Patent: August 21, 2018Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ara Cho, Jun-Sik Cho, Jae-Ho Yun, Sejin Ahn, Jihye Gwak, Jin-su Yoo, Seoung-Kyu Ahn, Joo-Hyung Park, Young-Joo Eo, Ki-hwan Kim
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Publication number: 20180138336Abstract: A method of manufacturing a CIGS-based solar cell including a transparent rear electrode, the method comprising forming a rear electrode layer including a transparent oxide material; forming rear electrode patterns including a metal material on the rear electrode layer; forming a CIGS-based light absorption layer on the rear electrode layer on which the rear electrode patterns are formed; forming a buffer layer on the light absorption layer; and forming a front electrode including a transparent material on the buffer layer, wherein the rear electrode patterns are provided with a transmissive portion, through which light is transmitted, formed between patterns of the metal material.Type: ApplicationFiled: November 29, 2016Publication date: May 17, 2018Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Kihwan KIM, Jae-ho YUN, Jihye GWAK, Seung-kyu AHN, Jun-Sik CHO, Joo-hyung PARK, Young-Joo EO, Jin-su YOO, Se-jin AHN, Ara CHO
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Publication number: 20180123507Abstract: Disclosed is a photovoltaic package having a simple structure configured to enable mid-term or short-term use thereof, the photovoltaic package including a photovoltaic cell for producing electrical energy through photoelectric conversion, a front sealing sheet disposed on the front side of the photovoltaic cell, and a back sealing sheet disposed on the back side of the photovoltaic cell, wherein at least one of the front sealing sheet and the back sealing sheet contains therein moisture-absorbent particles, and the front sealing sheet and the back sealing sheet are adhered to each other so that the photovoltaic cell is sealed.Type: ApplicationFiled: August 14, 2017Publication date: May 3, 2018Inventors: Young-joo EO, Jun-sik CHO, Jae-ho YUN, Se-jin AHN, Jihye GWAK, Jin-su YOO, Seung-kyu AHN, Joo-hyung PARK, Ara CHO, Kihwan KIM
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Publication number: 20180106440Abstract: A jig for a sample for a solar photovoltaic device is disclosed. The jig includes a cradle unit supporting the sample and a contact unit including at least one probe pin coming into contact with a busbar of the sample located in the cradle unit. The contact unit includes a coupling plate coupled with the cradle unit and at least one contact bar including a PCB and connected to the coupling plate, the contact bar having at least one probe pin aligned with the busbar of the sample with interposition of a probe pin connecting block. the jig includes a rotation support unit coupled with the cradle unit by a rotation shaft to allow the cradle unit to be rotated at an angle of 180° or greater so that upper and lower surfaces of the sample supported by the cradle unit are reversed.Type: ApplicationFiled: October 19, 2017Publication date: April 19, 2018Inventors: Seung-kyu AHN, Jun-sik CHO, Jae-ho YUN, Se-jin AHN, Jihye GWAK, Jin-su YOO, Joo-hyung PARK, Young-joo EO, Ara CHO, Kihwan KIM
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Publication number: 20180033901Abstract: The invention relates to a semitransparent back electrode, a solar cell using the same, and a method for manufacturing them and, more specifically, to a technique for solving a performance decrease problem caused by increase of resistance of a conventional semitransparent solar cell. A method for manufacturing a semitransparent back electrode of a solar cell according to the invention includes depositing a transparent back electrode on a substrate, and forming a semitransparent molybdenum electrode layer on the back electrode. Accordingly, a BSF effect can be expected by applying a molybdenum layer locally or restrictively as a thin film, and the transparency is secured.Type: ApplicationFiled: November 2, 2016Publication date: February 1, 2018Inventors: Jun Sik Cho, Jae Ho Yun, Se Jin Ahn, Jihye Gwak, Jin Su Yoo, Seung Kyu Ahn, Joo Hyung Park, Young Joo Eo, A Ra Cho, Ki Hwan Kim
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Publication number: 20170317639Abstract: Disclosed is a circulation type space-based solar power system, the system including: one or more solar modules; a conveyor belt on which the solar modules are attached, whereby the solar modules move between a solar power generating position and a recovery position, the solar modules receiving sunlight to generate solar power in the solar power generating position, and not receiving sunlight in the recovery position; a driver moving the conveyor belt; and a protective plate blocking cosmic rays incident to the solar modules located in the recovery position. The system can generate solar power for a long time by moving the solar modules between the solar power generating position and the recovery position. While some of the solar modules generate solar power, the remaining solar modules having damage are recovered.Type: ApplicationFiled: October 14, 2016Publication date: November 2, 2017Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Young-Joo EO, Jun-Sik CHO, Jae-ho YUN, Sejin AHN, Jihye GWAK, Jin-su YOO, Ara CHO, Seoung-Kyu AHN, Joo-Hyung PARK, Kihwan KIM
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Patent number: 9667190Abstract: Disclosed herein is a device for controlling a sample temperature during photoelectric measurement of the sample. The device for controlling a sample temperature during photoelectric measurement of the sample includes: a sample stage to which a measurement target sample is fixed; a cooling unit for cooling the sample by injecting air; and a temperature measuring unit having a thermometer that measures a temperature of the sample. The device has an effect of easily controlling the temperature of a measurement target sample by employing a direct control method for a sample temperature, in which air or cooled air is injected to the sample.Type: GrantFiled: August 8, 2014Date of Patent: May 30, 2017Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: SeoungKyu Ahn, Kyung Hoon Yoon, Jae Ho Yun, Jun Sik Cho, SeJin Ahn, Jihye Gwak, Kee Shik Shin, Kihwan Kim, Joo Hyung Park, Young Joo Eo, Jin Su Yoo, Ara Cho
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Publication number: 20170141250Abstract: Disclosed is a method of forming a chalcogen compound thin film suitable for use in a light-absorption layer of a solar cell. The method includes manufacturing a precursor liquid including an Sn precursor material and an S precursor material, applying the precursor liquid to form a precursor film, and heat-treating the precursor film. The Sn precursor material and the S precursor material are liquid materials. The present invention provides a method of forming a chalcogen compound thin film using a liquid precursor material without a sulfurization process, thereby forming a high-quality SnS thin film at low cost using a process which is suitable for mass production. Further, the light-absorption layer is formed using a process which is suitable for mass production, thus enabling the manufacture of a solar cell including the chalcogen compound thin film at low cost.Type: ApplicationFiled: July 14, 2016Publication date: May 18, 2017Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ara CHO, Jun-Sik CHO, Jae-Ho YUN, Sejin AHN, Jihye GWAK, Jin-su YOO, Seoung-Kyu AHN, Joo-Hyung PARK, Young-Joo EO, Ki-hwan KIM
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Publication number: 20170125618Abstract: Disclosed is a method of forming a CIGS-based thin film having high efficiency using a simple process at relatively low temperatures. The method includes an Ag thin film forming step and an ACIGS forming step of depositing Cu, In, Ga, and Se on the surface of the Ag thin film using a vacuum co-evaporation process. Ag, constituting the Ag thin film, is completely diffused, while Cu, In, Ga, and Se are deposited to form ACIGS together with Cu, In, Ga, and Se co-evaporated in a vacuum during the ACIGS forming step. The Ag thin film is formed and CIGS elements are then deposited using vacuum co-evaporation to form an ACIGS thin film having improved power generation efficiency at a relatively low temperature of 400° C. or less using only a single-stage vacuum co-evaporation process.Type: ApplicationFiled: December 23, 2015Publication date: May 4, 2017Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Kihwan Kim, Jae-ho YUN, Jun-Sik Cho, Jihye Gwak, Young-Joo EO, Ara Cho, Kyung Hoon Yoon, Kee Shik Shin, Sejin Ahn, Joo-Hyung Park, Seoung-Kyu Ahn, Jin-su Yoo
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Patent number: 9634162Abstract: A method of fabricating an Ag—(Cu—)In—Ga—Se (A(C)IGS) based thin film using Se—Ag2Se core-shell nanoparticles, an A(C)IGS based thin film fabricated by the method, and a tandem solar cell having the A(C)IGS thin film are disclosed. More particularly, a method of fabricating a densified Ag—(Cu—)In—Ga—Se (A(C)IGS) based thin film by non-vacuum coating a substrate with a slurry containing Se—Ag2Se core-shell nanoparticles, an A(C)IGS based thin film fabricated by the method, and a tandem solar cell including the A(C)IGS based thin film are disclosed. According to the present invention, an A(C)IGS based thin film including Ag is manufactured by applying Se—Ag2Se core-shell nanoparticles in a process of manufacturing a (C)IGS thin film, thereby providing an A(C)IGS based thin film having a wide band gap.Type: GrantFiled: September 3, 2013Date of Patent: April 25, 2017Assignee: Korea Institute of Energy ResearchInventors: Ara Cho, Kyung Hoon Yoon, SeJin Ahn, Jae Ho Yun, Young Joo Eo, Jihye Gwak, Kee Shik Shin, SeoungKyu Ahn, Jun Sik Cho, Jin-Su Yoo, Joo Hyung Park
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Publication number: 20170044658Abstract: Disclosed is a crucible that exhibits stable evaporation efficiency and durability with respect to Al, is used in an evaporation source of an electron-beam evaporator, and includes a storage unit, which includes a wall and a bottom and in which a deposition material is placed, and a wetting prevention unit that includes another wall, which is taller than the wall of the storage unit, and another bottom, and is combined with an exterior of the storage unit. The wetting prevention unit is provided so that only the wall of the storage unit is wet with Al, and accordingly, the lifespan of the crucible is lengthened. Further, contact with the ceramic material in order to prevent wetting is minimized, thereby preventing a reduction in the physical properties of the thin film due to the impurities mixed with the deposited Al.Type: ApplicationFiled: July 7, 2016Publication date: February 16, 2017Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ki-hwan KIM, Jun-Sik CHO, Ara CHO, Jae-Ho YUN, Kyung Hoon YOON, Jin-su YOO, Young-Joo EO, Seoung-Kyu AHN, Sejin AHN, Kee Shik SHIN, Joo-Hyung PARK, Jihye GWAK
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Publication number: 20160308490Abstract: Disclosed herein is a device for controlling a sample temperature during photoelectric measurement of the sample. The device for controlling a sample temperature during photoelectric measurement of the sample includes: a sample stage to which a measurement target sample is fixed; a cooling unit for cooling the sample by injecting air; and a temperature measuring unit having a thermometer that measures a temperature of the sample. The device has an effect of easily controlling the temperature of a measurement target sample by employing a direct control method for a sample temperature, in which air or cooled air is injected to the sample.Type: ApplicationFiled: August 8, 2014Publication date: October 20, 2016Applicant: Korean Institute of Energy ResearchInventors: SeoungKyu AHN, Kyung Hoon YOON, Jae Ho YUN, Jun Sik CHO, Sejin AHN, Jihye GWAK, Kee Shik SHIN, Kihwan KIM, Joo Hyung PARK, Young Joo EO, Jin Su YOO, Ara CHO
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Publication number: 20160284901Abstract: Disclosed are a method of manufacturing a CI(G)S-based thin film including aging of a slurry composed of binary nanoparticles, and a CI(G)S-based thin film manufactured thereby. The method of manufacturing the CI(G)S-based thin film includes: preparing CI(G)S-based binary nanoparticles; mixing the binary nanoparticles, a solution precursor including a CI(G)S-based element, a solvent and a chelating agent, thus preparing a hybrid slurry; aging the hybrid slurry for 5 to 10 days; subjecting the aged hybrid slurry to coating, thus forming a CI(G)S-based thin film; and subjecting the CI(G)S-based thin film to heat treatment. Thereby, high reproducibility can be ensured upon manufacturing a CI(G)S-based thin film for solar cells, and thus reliability of the produced thin film can be increased.Type: ApplicationFiled: August 30, 2013Publication date: September 29, 2016Inventors: Ara CHO, Kyung Hoon YOON, SeJin AHN, Jae Ho YUN, Young Joo EO, Jihye GWAK, SeoungKyu AHN, Jun Sik CHO, Jin Su YOO, Kihwan KIM, Joo Hyung PARK
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Patent number: 9437761Abstract: Disclosed is a method of forming a chalcopyrite light-absorbing layer for a solar cell, including: forming a thin film including a chalcopyrite compound precursor; and radiating light on the thin film, wherein the chalcopyrite compound precursor absorbs light energy and is thus crystallized. When forming the chalcopyrite light-absorbing layer, light, but not heat, is applied, thus preventing problems, including damage to a substrate due to heat and formation of MoSe2 due to heating of the Mo rear electrode. Furthermore, long-wavelength light, which deeply penetrates the thin film, is first radiated, and short-wavelength light, which shallowly penetrates the thin film, is subsequently radiated, thereby sequentially forming the chalcopyrite light-absorbing layer from the bottom of the thin film.Type: GrantFiled: April 1, 2014Date of Patent: September 6, 2016Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Young Joo Eo, Kyung Hoon Yoon, SeJin Ahn, Jihye Gwak, Jae Ho Yun, Ara Cho, Kee Shik Shin, SeoungKyu Ahn, Jun Sik Cho, Jin Su Yoo, Sang Hyun Park, Joo Hyung Park
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Publication number: 20160049533Abstract: Disclosed is a method of forming a chalcopyrite light-absorbing layer for a solar cell, including: forming a thin film including a chalcopyrite compound precursor; and radiating light on the thin film, wherein the chalcopyrite compound precursor absorbs light energy and is thus crystallized. When forming the chalcopyrite light-absorbing layer, light, but not heat, is applied, thus preventing problems, including damage to a substrate due to heat and formation of MoSe2 due to heating of the Mo rear electrode. Furthermore, long-wavelength light, which deeply penetrates the thin film, is first radiated, and short-wavelength light, which shallowly penetrates the thin film, is subsequently radiated, thereby sequentially forming the chalcopyrite light-absorbing layer from the bottom of the thin film.Type: ApplicationFiled: April 1, 2014Publication date: February 18, 2016Inventors: Young Joo EO, Kyung Hoon YOON, SeJin AHN, Jihye GWAK, Jae Ho YUN, Ara CHO, Kee Shik SHIN, SeoungKyu AHN, Jun Sik CHO, Jin Su YOO, Sang Hyun PARK, Joo Hyung PARK
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Patent number: 9252316Abstract: Disclosed is an ultra-thin HIT solar cell, including: an n- or p-type crystalline silicon substrate; an amorphous silicon emitter layer having a doping type different from that of the silicon substrate; and an intrinsic amorphous silicon passivation layer formed between the crystalline silicon substrate and the amorphous silicon emitter layer, wherein the HIT solar cell further includes a transparent conductive oxide layer made of ZnO on an upper surface thereof, and the surface of the crystalline silicon substrate is not textured but only the surface of the transparent conductive oxide layer is textured, and thereby a very thin crystalline silicon substrate can be used, ultimately achieving an ultra-thin HIT solar cell having a very low total thickness while maintaining light trapping capacity.Type: GrantFiled: April 1, 2015Date of Patent: February 2, 2016Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Jun Sik Cho, Jin Su Yoo, Joo Hyung Park, Jae Ho Yun, Jihye Gwak, SeoungKyu Ahn, Young Joo Eo, SeJin Ahn, Ara Cho, Kihwan Kim, Kyung Hoon Yoon, Kee Shik Shin