Patents by Inventor Se-Jin Ahn

Se-Jin Ahn 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: 20200168753
    Abstract: 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: Application
    Filed: January 21, 2020
    Publication date: May 28, 2020
    Inventors: 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
  • Patent number: 10465868
    Abstract: 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: Grant
    Filed: October 19, 2017
    Date of Patent: November 5, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: 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
  • Patent number: 10283654
    Abstract: 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: Grant
    Filed: November 29, 2016
    Date of Patent: May 7, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: 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
  • Patent number: 10121924
    Abstract: The invention relates a thin-film solar cell. In the related art, a buffer layer, a transparent electrode, and a grid electrode are formed on a light absorption layer, but in the invention, the buffer layer and the transparent electrode are not formed on a light absorption layer, and the buffer layer, the transparent electrode, and the grid electrode are formed under a CIGS face such that solar light is directly input to the light absorption layer without obstacles, and the first electrode and the buffer layer are patterned in a saw-toothed structure to engage with each other to reduce a distance by which electrons or holes generated by absorbing light energy move to the electrode or the buffer layer.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: November 6, 2018
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Young Joo Eo, Ara Cho, Jun Sik Cho, Joo Hyung Park, Kyung Hoon Yoon, Se Jin Ahn, Ji Hye Gwak, Jae Ho Yun, Kee Shik Shin, Seoung Kyu Ahn, Jin Su You, Sang Hyun Park
  • Patent number: 10096739
    Abstract: A method for manufacturing a light absorption layer of a thin film solar cell in in a method for manufacturing a solar cell transparent electrode may be provided that includes: manufacturing a Ib group element-VIa group element binary system nano particle (s100); manufacturing a binary system nano particle slurry of the Ib group element-VIa group element by adding a solvent, binder and a solution precursor including Va group element to the Ib group element-VIa group element binary system nano particle (s200); distributing and mixing the binary system nano particle slurry of the Ib group element-VIa group element (s300); coating the binary system nano particle slurry of the Ib group element-VIa group element on the rear electrode layer 200 (s400); and performing a heat treatment process on the coated nano particle slurry by supplying the VIa group element (s500).
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: October 9, 2018
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Ara Cho, Kyung Hoon Yoon, Se Jin Ahn, Jae Ho Yun, Jihye Gwak, Kee Shik Shin, Young Joo Eo, Seoung Kyu Ahn, Jun Sik Cho, Jin Su You, Joo Hyung Park, Ki Hwan Kim
  • Publication number: 20180138336
    Abstract: 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: Application
    Filed: November 29, 2016
    Publication date: May 17, 2018
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: 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
  • Publication number: 20180123507
    Abstract: 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: Application
    Filed: August 14, 2017
    Publication date: May 3, 2018
    Inventors: 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
  • Publication number: 20180106440
    Abstract: 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: Application
    Filed: October 19, 2017
    Publication date: April 19, 2018
    Inventors: 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
  • Publication number: 20180033901
    Abstract: 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: Application
    Filed: November 2, 2016
    Publication date: February 1, 2018
    Inventors: 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
  • Publication number: 20170033258
    Abstract: A method for manufacturing a light absorption layer of a thin film solar cell includes: manufacturing a Ib group element-VIa group element binary system nano particle; manufacturing a binary system nano particle slurry of the Ib group element-VIa group element by adding a solution precursor including a solvent, binder and Va group element to the Ib group element-VIa group element binary system nano particle; distributing and mixing the binary system nano particle slurry of the Ib group element-VIa group element; coating the binary system nano particle slurry of the Ib group element-VIa group element on the rear electrode layer; and performing a heat treatment process on the coated nano particle slurry by supplying the VIa group element.
    Type: Application
    Filed: December 18, 2014
    Publication date: February 2, 2017
    Inventors: Ara Cho, Kyung Hoon Yoon, Se Jin Ahn, Jae Ho Yun, Jihye Gwak, Kee Shik Shin, Young Joo Eo, Seoung Kyu Ahn, Jun Sik Cho, Jin Su You, Joo Hyung Park, Ki Hwan Kim
  • Publication number: 20160307610
    Abstract: Methods and memory systems are provided that can detect bit errors due to read disturbances. A main page of a flash memory in a memory system is read. A bit error in data that is read from the main page is detected and corrected. In parallel with reading the main page, a bit error is detected in data that is read from a dummy page of the flash memory.
    Type: Application
    Filed: October 23, 2012
    Publication date: October 20, 2016
    Inventors: Se-Jin Ahn, Yong-Hyeon Kim, Sung-Up Choi, Yong-Kyeong Kim
  • Patent number: 9471418
    Abstract: Methods and memory systems are provided that can detect bit errors due to read disturbances. A main page of a flash memory in a memory system is read. A bit error in data that is read from the main page is detected and corrected. In parallel with reading the main page, a bit error is detected in data that is read from a dummy page of the flash memory.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: October 18, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Se-Jin Ahn, Yong-Hyeon Kim, Sung-Up Choi, Yong-Kyeong Kim
  • Publication number: 20160099366
    Abstract: A solar cell module, a method for manufacturing the solar cell module, a solar power system, and an interconnection ribbon are provided. The solar cell module includes a plurality of solar cells which are connected in series or in parallel through interconnection ribbons, wherein the interconnection ribbons have a zigzag shape to reduce tension generated according to bending of the solar cell module.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 7, 2016
    Inventors: Young Joo Eo, Jihye Gwak, Ara Cho, Se Jin Ahn, Seoung Kyu Ahn, Jun Sik Cho, Joo Hyung Park, Jin Su You, Jae Ho Yun, Ki Hwan Kim, Kyung Soo Kim, Kyung Hoon Yoon, Kee Shik Shin
  • Publication number: 20160005899
    Abstract: The invention relates a thin-film solar cell. In the related art, a buffer layer, a transparent electrode, and a grid electrode are formed on a light absorption layer, but in the invention, the buffer layer and the transparent electrode are not formed on a light absorption layer, and the buffer layer, the transparent electrode, and the grid electrode are formed under a CIGS face such that solar light is directly input to the light absorption layer without obstacles, and the first electrode and the buffer layer are patterned in a saw-toothed structure to engage with each other to reduce a distance by which electrons or holes generated by absorbing light energy move to the electrode or the buffer layer.
    Type: Application
    Filed: August 6, 2013
    Publication date: January 7, 2016
    Inventors: Young Joo EO, Ara CHO, Jun Sik CHO, Joo Hyung PARK, Kyung Hoon YOON, Se Jin AHN, Ji Hye GWAK, Jae Ho YUN, Kee Shik SHIN, Seoung Kyu AHN, Jin Su YOU, Sang Hyun PARK
  • Publication number: 20140115419
    Abstract: Methods and memory systems are provided that can detect bit errors due to read disturbances. A main page of a flash memory in a memory system is read. A bit error in data that is read from the main page is detected and corrected. In parallel with reading the main page, a bit error is detected in data that is read from a dummy page of the flash memory.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Inventors: Se-Jin Ahn, Yong-Hyeon Kim, Sung-Up Choi, Yong-Kyeong Kim
  • Patent number: 8677058
    Abstract: A method of performing a write operation in a nonvolatile memory device comprises storing write data in a log block used to update a data block, determining whether a write pattern stored in the log block is a sequential write pattern or a random write pattern, and selecting a new data block for storing merged data in the data block and the log block. The new data block is determined to be a single-level cell block or a multi-level cell block according to the determined write pattern.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: March 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Won Jung, Se-Jin Ahn, Tae-Min Lee
  • Patent number: 8569102
    Abstract: Disclosed are a high density CIS thin film and a method of manufacturing the same, which includes coating CIS nanopowders, CIGS nanopowders or CZTS nanopowders on a substrate by non-vacuum coating, followed by heat treatment with cavities between the nanopowders filled with filling elements such as copper, indium, gallium, zinc, tin, and the like. The high density CIS thin film is applied to a photo-absorption layer of a thin film solar cell, thereby providing a highly efficient thin film solar cell.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: October 29, 2013
    Assignee: Korea Institute of Energy Research
    Inventors: Se-Jin Ahn, Jae-Ho Yun, Ji-Hye Gwak, Ara Cho, Kyung-Hoon Yoon, Kee-Shik Shin, Seoung-Kyu Ahn, Ki-Bong Song
  • Publication number: 20130045565
    Abstract: Disclosed are a high density CIS thin film and a method of manufacturing the same, which includes coating CIS nanopowders, CIGS nanopowders or CZTS nanopowders on a substrate by non-vacuum coating, followed by heat treatment with cavities between the nanopowders filled with filling elements such as copper, indium, gallium, zinc, tin, and the like. The high density CIS thin film is applied to a photo-absorption layer of a thin film solar cell, thereby providing a highly efficient thin film solar cell.
    Type: Application
    Filed: July 19, 2011
    Publication date: February 21, 2013
    Inventors: Se-Jin Ahn, Jae-Ho Yun, Ji-Hye Gwak, Ara Cho, Kyung-Hoon Yoon, Kee-Shik Shin, Seoung-Kyu Ahn, Ki-Bong Song
  • Patent number: 8370611
    Abstract: Provided is a memory card device. The memory card device includes a flash memory and a controller. The flash memory includes a boot area storing boot data, and a user area storing user data. The controller accesses the boot area or the user area according to an external command. Boot data can be stored in a memory card integrated in an electronic device. Also, when a host requests an access to boot data/user data stored in the memory card, the boot data/user data can be accessed under control of the controller.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: February 5, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Up Choi, Se-Jin Ahn, Yong-Hyeon Kim
  • Patent number: 8316278
    Abstract: Methods and memory systems are provided that detect bit errors due to read disturbances. A main page of a flash memory in a memory system is read. A bit error in data that is read from the main page is detected and corrected. In parallel with reading the main page, a bit error is detected in data that is read from a dummy page of the flash memory.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: November 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-Jin Ahn, Yong-Hyeon Kim, Sung-Up Choi, Yong-Kyeong Kim