Patents by Inventor Ryota Mishima

Ryota Mishima 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: 11211519
    Abstract: The method for manufacturing a solar cell includes: forming a first semiconductor layer of first conductivity type on a surface of a semiconductor substrate; forming a lift-off layer containing a silicon-based material on the first semiconductor layer; selectively removing the lift-off layer and first semiconductor layer; forming a second semiconductor layer of second conductivity type on a surface having the lift-off layer and first semiconductor layer; and removing the second semiconductor layer covering the lift-off layer by removing the lift-off layer using an etching solution.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: December 28, 2021
    Assignee: KANEKA CORPORATION
    Inventors: Ryota Mishima, Kunihiro Nakano, Katsunori Konishi, Daisuke Adachi, Takashi Kuchiyama, Kenji Yamamoto
  • Patent number: 10944017
    Abstract: A method for manufacturing a stacked photoelectric conversion device includes forming an intermediate transparent conductive layer on a light-receiving surface of a crystalline silicon-based photoelectric conversion unit including a crystalline silicon substrate, and forming a thin-film photoelectric conversion unit on the intermediate transparent conductive layer. The stacked photoelectric conversion device includes the crystalline silicon-based photoelectric conversion unit, the intermediate transparent conductive layer, and the thin-film photoelectric conversion unit. The light-receiving surface of the crystalline silicon-based photoelectric conversion unit has a textured surface including a plurality of projections and recesses. The textured surface has an average height of 0.5 ?m or more. The intermediate transparent conductive layer fills the recesses of the textured surface and covers the tops of the projections of the textured surface.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: March 9, 2021
    Assignee: KANEKA CORPORATION
    Inventors: Ryota Mishima, Masashi Hino, Tomomi Meguro
  • Publication number: 20210057597
    Abstract: A method for manufacturing a solar cell includes: forming a first semiconductor layer of a first conductivity type on and over one of two major surfaces facing each other on a crystal substrate; forming a lift-off layer on and over the first semiconductor layer; selectively removing the lift-off layer and first semiconductor layer; forming a second semiconductor layer of a second conductivity type on and over the major surface having the lift-off layer and the first semiconductor layer; and removing the second semiconductor layer covering the lift-off layer by removing the lift-off layer using an etching solution; and washing the crystal substrate by using a rinsing liquid.
    Type: Application
    Filed: November 5, 2020
    Publication date: February 25, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Kunihiro NAKANO, Ryota MISHIMA, Katsunori KONISHI, Takashi KUCHIYAMA
  • Publication number: 20200411713
    Abstract: The method for manufacturing a solar cell includes: forming a first semiconductor layer of first conductivity type on a surface of a semiconductor substrate; forming a lift-off layer containing a silicon-based material on the first semiconductor layer; selectively removing the lift-off layer and first semiconductor layer; forming a second semiconductor layer of second conductivity type on a surface having the lift-off layer and first semiconductor layer; and removing the second semiconductor layer covering the lift-off layer by removing the lift-off layer using an etching solution.
    Type: Application
    Filed: August 21, 2020
    Publication date: December 31, 2020
    Inventors: Ryota MISHIMA, Kunihiro NAKANO, Katsunori KONISHI, Daisuke ADACHI, Takashi KUCHIYAMA, Kenji YAMAMOTO
  • Patent number: 10672930
    Abstract: A tandem-type photoelectric conversion device includes, arranged in the following order from a light-incident side: a first photoelectric conversion unit; an anti-reflection layer; a transparent conductive layer; and a second photoelectric conversion unit. The first photoelectric conversion unit includes a light absorbing layer including a photosensitive material of perovskite-type crystal structure represented by general formula R1NH3M1X3 or HC(NH2)2M1X3, wherein R1 is an alkyl group, M1 is a divalent metal ion, and X is a halogen. The second photoelectric conversion unit includes a light absorbing layer having a bandgap narrower than a bandgap of the light absorbing layer in the first photoelectric conversion unit. The anti-reflection layer and the transparent conductive layer are in contact with each other, and a refractive index of the anti-reflection layer is lower than a refractive index of the transparent conductive layer.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 2, 2020
    Assignee: KANEKA CORPORATION
    Inventors: Ryota Mishima, Masashi Hino, Hisashi Uzu, Tomomi Meguro
  • Patent number: 10410907
    Abstract: A sample-holding device for holding and lifting a sample includes a sample-holding surface facing the sample; and a positioning member provided at a peripheral part of the sample-holding surface, the positioning member comprising a contact part having an outward-facing part on a back side thereof; a first rounded or chamfered end; and a second rounded or chamfered end, wherein the contact part contacts with part of the sample when the sample is held or when the sample is off-point, wherein the first end is an end of a section comprising the contact part or a part smoothly continuing from the contact part, the end being on a distant side from the sample-holding surface, and the second end is an end of the outward-facing part, the end being located on a tipping side of the outward-facing part.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: September 10, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Takashi Suezaki, Ryota Mishima
  • Patent number: 10333016
    Abstract: A multi-junction photoelectric conversion device includes, in the following order from a light-receiving side: a first photoelectric conversion unit; an intermediate layer; and a second photoelectric conversion unit. The first photoelectric conversion unit includes: a first light absorbing layer comprising a perovskite-type crystal structure photosensitive material; a first charge transport layer on the light-receiving side of the first light absorbing layer; and a second charge transport layer on a rear side of the first light absorbing layer. The second charge transport layer is in contact with the intermediate layer. The second photoelectric conversion unit includes: a second light absorbing layer that is a crystalline silicon substrate; and a first conductive semiconductor layer that is in contact with the intermediate layer.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: June 25, 2019
    Assignee: KANEKA CORPORATION
    Inventors: Hisashi Uzu, Masashi Hino, Mitsuru Ichikawa, Ryota Mishima, Tomomi Meguro, Kenji Yamamoto
  • Publication number: 20190081189
    Abstract: A method for manufacturing a stacked photoelectric conversion device includes forming an intermediate transparent conductive layer on a light-receiving surface of a crystalline silicon-based photoelectric conversion unit including a crystalline silicon substrate, and forming a thin-film photoelectric conversion unit on the intermediate transparent conductive layer. The stacked photoelectric conversion device includes the crystalline silicon-based photoelectric conversion unit, the intermediate transparent conductive layer, and the thin-film photoelectric conversion unit. The light-receiving surface of the crystalline silicon-based photoelectric conversion unit has a textured surface including a plurality of projections and recesses. The textured surface has an average height of 0.5 ?m or more. The intermediate transparent conductive layer fills the recesses of the textured surface and covers the tops of the projections of the textured surface.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 14, 2019
    Applicant: KANEKA CORPORATION
    Inventors: Ryota Mishima, Masashi Hino, Tomomi Meguro
  • Publication number: 20180226529
    Abstract: A multi-junction photoelectric conversion device includes, in the following order from a light-receiving side: a first photoelectric conversion unit; an intermediate layer; and a second photoelectric conversion unit. The first photoelectric conversion unit includes: a first light absorbing layer comprising a perovskite-type crystal structure photosensitive material; a first charge transport layer on the light-receiving side of the first light absorbing layer; and a second charge transport layer on a rear side of the first light absorbing layer. The second charge transport layer is in contact with the intermediate layer. The second photoelectric conversion unit includes: a second light absorbing layer that is a crystalline silicon substrate; and a first conductive semiconductor layer that is in contact with the intermediate layer.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Applicant: Kaneka Corporation
    Inventors: Hisashi Uzu, Masashi Hino, Mitsuru Ichikawa, Ryota Mishima, Tomomi Meguro, Kenji Yamamoto
  • Publication number: 20180019360
    Abstract: A tandem-type photoelectric conversion device includes, arranged in the following order from a light-incident side: a first photoelectric conversion unit; an anti-reflection layer; a transparent conductive layer; and a second photoelectric conversion unit. The first photoelectric conversion unit includes a light absorbing layer including a photosensitive material of perovskite-type crystal structure represented by general formula R1NH3M1X3 or HC(NH2)2M1X3, wherein R1 is an alkyl group, M1 is a divalent metal ion, and X is a halogen. The second photoelectric conversion unit includes a light absorbing layer having a bandgap narrower than a bandgap of the light absorbing layer in the first photoelectric conversion unit. The anti-reflection layer and the transparent conductive layer are in contact with each other, and a refractive index of the anti-reflection layer is lower than a refractive index of the transparent conductive layer.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 18, 2018
    Applicant: Kaneka Corporation
    Inventors: Ryota Mishima, Masashi Hino, Hisashi Uzu, Tomomi Meguro
  • Publication number: 20180019361
    Abstract: A photoelectric conversion device includes, arranged in the following order from a light-receiving side: a transparent electroconductive layer; a first photoelectric conversion unit that is a perovskite-type photoelectric conversion unit; and a second photoelectric conversion unit. The first photoelectric conversion unit includes, arranged in the following order from the light-receiving side: a hole transporting layer; a light absorbing layer including a photosensitive material of perovskite-type crystal structure represented by general formula RNH3MX3 or HC(NH2)2MX3; and an electron transporting layer. The second photoelectric conversion unit includes a light absorbing layer having a bandgap narrower than a bandgap of the light absorbing layer in the first photoelectric conversion unit. A product of a resistivity ? and a thickness t of the hole transporting layer satisfies ?t?0.1 ?Q·m2. The transparent electroconductive layer is in contact with the hole transporting layer.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 18, 2018
    Applicant: Kaneka Corporation
    Inventors: Ryota Mishima, Masashi Hino, Hisashi Uzu, Tomomi Meguro
  • Publication number: 20170200631
    Abstract: A sample-holding device for holding and lifting a sample includes a sample-holding surface facing the sample; and a positioning member provided at a peripheral part of the sample-holding surface, the positioning member comprising a contact part having an outward-facing part on a back side thereof; a first rounded or chamfered end; and a second rounded or chamfered end, wherein the contact part contacts with part of the sample when the sample is held or when the sample is off-point, wherein the first end is an end of a section comprising the contact part or a part smoothly continuing from the contact part, the end being on a distant side from the sample-holding surface, and the second end is an end of the outward-facing part, the end being located on a tipping side of the outward-facing part.
    Type: Application
    Filed: March 29, 2017
    Publication date: July 13, 2017
    Applicant: Kaneka Corporation
    Inventors: Takashi Suezaki, Ryota Mishima