Patents by Inventor Seiichiro Inai

Seiichiro Inai 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: 10580915
    Abstract: According to the present disclosure, a photoelectric conversion film includes a plurality of semiconductor nanoparticles and a matrix phase provided around each of the plurality of semiconductor nanoparticles. The matrix phase includes a principal phase including a composite, which includes an organic molecule polymer and an inorganic material. A photoelectric conversion device includes a transparent electrically conductive film, a photoelectric conversion layer, a semiconductor substrate, and an electrode layer, which are layered on a glass substrate in this order. The photoelectric conversion layer includes the photoelectric conversion film.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: March 3, 2020
    Assignee: KYOCERA Corporation
    Inventors: Seiichiro Inai, Masashi Saito, Hiromitsu Ogawa
  • Publication number: 20180351016
    Abstract: According to the present disclosure, a photoelectric conversion film includes a plurality of semiconductor nanoparticles and a matrix phase provided around each of the plurality of semiconductor nanoparticles. The matrix phase includes a principal phase including a composite, which includes an organic molecule polymer and an inorganic material. A photoelectric conversion device includes a transparent electrically conductive film, a photoelectric conversion layer, a semiconductor substrate, and an electrode layer, which are layered on a glass substrate in this order. The photoelectric conversion layer includes the photoelectric conversion film.
    Type: Application
    Filed: November 28, 2016
    Publication date: December 6, 2018
    Applicant: KYOCERA Corporation
    Inventors: Seiichiro INAI, Masashi SAITO, Hiromitsu OGAWA
  • Patent number: 9023680
    Abstract: A method for producing a compound semiconductor layer comprises dissolving a metal feedstock comprising at least one of a group I-B element and a group III-B element, in a metal state, in a mixed solvent comprising an organic compound containing a chalcogen element and a Lewis base organic compound to produce a solution for forming a semiconductor; forming a coat using the solution for forming a semiconductor; and heat-treating the coat.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: May 5, 2015
    Assignee: KYOCERA Corporation
    Inventors: Seiichiro Inai, Yoshihide Okawa, Isamu Tanaka, Koichiro Yamada
  • Patent number: 8916905
    Abstract: It is an object to provide a photoelectric conversion device with high photoelectric conversion efficiency that improves reliability by increasing contact force between a light absorbing layer and an electrode layer. The photoelectric conversion device includes an electrode layer, and a light absorbing layer located on the electrode layer. The light absorbing layer contains a compound semiconductor. The light absorbing layer comprises a first layer close to the electrode layer and a second layer located on the first layer. The first layer has a void ratio lower than that of the second layer.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: December 23, 2014
    Assignee: KYOCERA Corporation
    Inventors: Shintaro Kubo, Shuji Nakazawa, Rui Kamada, Seiji Oguri, Shinnosuke Ushio, Shuichi Kasai, Seiichiro Inai
  • Publication number: 20140224333
    Abstract: A photoelectric converter is disclosed. The photoelectric converter includes a light-absorbing layer. The light-absorbing layer includes a plurality of crystalline grains. The grains contain a Group I-III-VI chalcopyrite compound semiconductor. The light-absorbing layer contains oxygen and an average atomic concentration of oxygen at grain boundaries of the light-absorbing layer is larger than the average atomic concentration of oxygen in the grains of the light-absorbing layer.
    Type: Application
    Filed: July 27, 2012
    Publication date: August 14, 2014
    Applicant: KYOCERA CORPORATION
    Inventors: Shintaro Kubo, Hideaki Asao, Seiichiro Inai, Hisakazu Ninomiya, Shuji Nakazawa
  • Publication number: 20130037901
    Abstract: It is an object to provide a photoelectric conversion device with high photoelectric conversion efficiency that improves reliability by increasing contact force between a light absorbing layer and an electrode layer. The photoelectric conversion device includes an electrode layer, and a light absorbing layer located on the electrode layer. The light absorbing layer contains a compound semiconductor. The light absorbing layer comprises a first layer close to the electrode layer and a second layer located on the first layer. The first layer has a void ratio lower than that of the second layer.
    Type: Application
    Filed: April 22, 2011
    Publication date: February 14, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Shintaro Kubo, Shuji Nakazawa, Rui Kamada, Seiji Oguri, Shinnosuke Ushio, Shuichi Kasai, Seiichiro Inai
  • Publication number: 20130000722
    Abstract: It is aimed to provide a photoelectric conversion device having improved conversion efficiency, and a method for manufacturing the photoelectric conversion device. For achieving this object, a photoelectric conversion device including a first semiconductor layer and a second semiconductor layer is employed. In the photoelectric conversion device, the first semiconductor layer includes one principal surface on which a plurality of projections are scattered, includes a I-III-VI group compound semiconductor, and has a first conductivity type. The second semiconductor layer is disposed on the one principal surface, has a thickness in a normal direction of the one principal surface, and has a second conductivity type different from the first conductivity type. Further, a first distance along which each of the projections is projected in the normal direction is longer than a second distance along which the second semiconductor layer is provided in the normal direction.
    Type: Application
    Filed: February 28, 2011
    Publication date: January 3, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Kazuki Yamada, Isamu Tanaka, Seiichiro Inai
  • Publication number: 20120288988
    Abstract: It is an object of the present invention to provide a method for manufacturing a semiconductor layer, a method for manufacturing a photoelectric conversion device, and a semiconductor layer forming solution which are able to easily manufacture a good semiconductor layer having a desired thickness. To accomplish this object, a starting solution containing a metallic element, a chalcogen organic compound and a Lewis base organic compound is initially produced. Next, heating the starting solution produces fine particles. The fine particles contain a metal chalcogenide which is a compound of the metallic element and a chalcogen element included in the chalcogen organic compound. A semiconductor layer is formed by using a semiconductor layer forming solution in which the fine particles are dispersed.
    Type: Application
    Filed: December 16, 2010
    Publication date: November 15, 2012
    Applicant: KYOCERA CORPORATION
    Inventors: Seiichiro Inai, Daisuke Nishimura, Isamu Tanaka
  • Patent number: 8278134
    Abstract: The production method of a photoelectric conversion device comprises adding a chalcogenide powder of a group-IIIB element to an organic solvent including a single source precursor containing a group-IB element, a group-IIIB element, and a chalcogen element to prepare a solution for forming a semiconductor, and forming a semiconductor containing a group-I-III-VI compound by use of the solution for forming a semiconductor.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: October 2, 2012
    Assignee: Kyocera Corporation
    Inventors: Isamu Tanaka, Seiichiro Inai, Yoshihide Okawa, Daisuke Nishimura, Sentaro Yamamoto
  • Publication number: 20120070937
    Abstract: A method for producing a compound semiconductor layer comprises dissolving a metal feedstock comprising at least one of a group I-B element and a group III-B element, in a metal state, in a mixed solvent comprising an organic compound containing a chalcogen element and a Lewis base organic compound to produce a solution for forming a semiconductor; forming a coat using the solution for forming a semiconductor; and heat-treating the coat.
    Type: Application
    Filed: July 27, 2010
    Publication date: March 22, 2012
    Applicant: KYOCERA CORPORATION
    Inventors: Seiichiro Inai, Yoshihide Okawa, Isamu Tanaka, Koichiro Yamada
  • Publication number: 20110244624
    Abstract: The production method of a photoelectric conversion device comprises the steps of adding a chalcogenide powder of a group-IIIB element to an organic solvent including a single source precursor containing a group-IB element, a group-IIIB element, and a chalcogen element to prepare a solution for forming a semiconductor, and forming a semiconductor containing a group-I-III-VI compound by use of the solution for forming a semiconductor.
    Type: Application
    Filed: March 29, 2010
    Publication date: October 6, 2011
    Applicant: KYOCERA CORPORATION
    Inventors: Isamu Tanaka, Seiichiro Inai, Yoshihide Okawa, Daisuke Nishimura, Sentaro Yamamoto