Patents by Inventor Atsushi Wakamiya

Atsushi Wakamiya 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: 20210319957
    Abstract: Provided are: a composition for forming a hole transporting layer for perovskite solar cells, which is inexpensive and does not need to be used together with a dopant; and a compound which can be contained in a composition for forming a hole transporting layer.
    Type: Application
    Filed: August 1, 2019
    Publication date: October 14, 2021
    Inventors: Hidetaka NISHIMURA, Iku OKADA, Taro TANABE, Atsushi WAKAMIYA
  • Patent number: 11088207
    Abstract: The present technology relates to a solid-state image sensor, a photoelectric conversion film, an electron blocking layer, an imaging apparatus, and an electronic device that can appropriately photoelectrically convert light of specific wavelengths with high spectral characteristics and high photoelectric conversion efficiency. A photoelectric conversion layer or an electron blocking layer is configured with a photoelectric conversion film made of only a compound represented by Chemical Formula (1). The present technology can be applied to a solid-state image sensor.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: August 10, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Yuta Hasegawa, Nobuyuki Matsuzawa, Daisuke Hobara, Atsushi Wakamiya
  • Patent number: 11066431
    Abstract: A complex has a structure of formula (1A): SnXn·(m)L, wherein X is at least one type of halogen atoms, L is a polar solvent molecule, n is a value from 1.5 to 2.5, and m is a value from 0.3 to 1.9. A perovskite compound has a structure of formula (2A): RSnXj, wherein Sn has an oxidation number from 1.5 to 2.5, R is at least one type of a monovalent cation, X is at least one type of halogen atoms, and j is a value from 2.5 to 3.5, and the perovskite compound is free of tin oxide; or a perovskite compound has a structure of formula (2B): R2M2BiX1, wherein R is at least one type of a monovalent cation, X is at least one type of halogen atoms; M2 is a monovalent metal, and i is a value from 5.0 to 7.0.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: July 20, 2021
    Assignee: KYOTO UNIVERSITY
    Inventors: Atsushi Wakamiya, Masashi Ozaki, Yasujiro Murata
  • Publication number: 20210119127
    Abstract: Problem: To provide a production method for a perovskite layer using a tin-based perovskite compound having excellent flatness and a production method for a perovskite-type solar cell using the perovskite layer obtained by the above-described production method for the perovskite layer. Solution: A method for producing a perovskite layer that includes a step of applying a solution containing an Sn-based perovskite compound to a substrate, a step of applying a poor solvent to the substrate, and a step of performing an annealing process to the substrate, in this order, wherein the poor solvent is at 45° C. to 100° C.
    Type: Application
    Filed: March 20, 2019
    Publication date: April 22, 2021
    Applicant: KYOTO UNIVERSITY
    Inventors: Atsushi Wakamiya, Masashi Ozaki, Jeiwei Liu
  • Patent number: 10937972
    Abstract: The complex comprising one or more of the compound represented by general formula: RPbn1Xm1 (wherein R is a cation represented by R1NH3+ (wherein R1 represents a univalent substituted or unsubstituted hydrocarbon group), or the following formula: (wherein R2 represents a hydrogen atom, or a univalent substituted or unsubstituted hydrocarbon group); X is the same or different, and each represents a halogen atom; n1 is 0.8 to 1.2; and m1 is 2.8 to 3.2, or the compound represented by general formula: R2Pbn2Xm2 wherein R and X are as defined above; n2 is 2.8 to 3.2; and m2 is 7.7 to 8.3; and one or more dimethylformamide molecules is capable of decreasing the stirring time upon dissolution in an organic solvent such as DMSO, as well as decreasing the hysteresis and improving the solar cell characteristics (in particular, photoelectric conversion efficiency) when the complex is applied to a perovskite layer.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: March 2, 2021
    Assignee: Kyoto University
    Inventors: Atsushi Wakamiya, Yumi Hirose, Ai Shimazaki
  • Publication number: 20190345176
    Abstract: A complex has a structure of formula (1A): SnXn·(m)L, wherein X is at least one type of halogen atoms, L is a polar solvent molecule, n is a value from 1.5 to 2.5, and m is a value from 0.3 to 1.9. A perovskite compound has a structure of formula (2A): RSnXj, wherein Sn has an oxidation number from 1.5 to 2.5, R is at least one type of a monovalent cation, X is at least one type of halogen atoms, and j is a value from 2.5 to 3.5, and the perovskite compound is free of tin oxide; or a perovskite compound has a structure of formula (2B): R2M2BiX1, wherein R is at least one type of a monovalent cation, X is at least one type of halogen atoms; M2 is a monovalent metal, and i is a value from 5.0 to 7.0.
    Type: Application
    Filed: January 26, 2018
    Publication date: November 14, 2019
    Applicant: KYOTO UNIVERSITY
    Inventors: Atsushi Wakamiya, Masashi Ozaki, Yasujiro Murata
  • Patent number: 10211401
    Abstract: Provided are: a macromolecular compound for providing an organic semiconductor material exhibiting excellent conversion efficiency; a starting-material compound having high material design freedom; and methods for producing the same. The macromolecular compound according to the present invention comprising a benzobisthiazole structural unit represented by the formula (1): [in the formula (1), T1 and T2 each independently represent an alkoxy group, a thioalkoxy group, a thiophene ring optionally substituted by a hydrocarbon group or an organosilyl group, a thiazole ring optionally substituted by a hydrocarbon group or an organosilyl group, or a phenyl group optionally substituted by a hydrocarbon group, an alkoxy group, a thioalkoxy group, an organosilyl group, a halogen atom or a trifluoromethyl group; and B1 and B2 each represent a thiophene ring optionally substituted by a hydrocarbon group, a thiazole ring optionally substituted by a hydrocarbon group, or an ethynylene group].
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: February 19, 2019
    Assignee: TOYOBO CO., LTD.
    Inventors: Atsushi Wakamiya, Kazutake Hagiya, Shiro Hamamoto, Hikaru Tanaka
  • Publication number: 20180366657
    Abstract: The complex comprising one or more of the compound represented by general formula: RPbn1Xm1 (wherein R is a cation represented by R1NH3+ (wherein R1 represents a univalent substituted or unsubstituted hydrocarbon group), or the following formula: (wherein R2 represents a hydrogen atom, or a univalent substituted or unsubstituted hydrocarbon group); X is the same or different, and each represents a halogen atom; n1 is 0.8 to 1.2; and m1 is 2.8 to 3.2, or the compound represented by general formula: R2Pbn2Xm2 wherein R and X are as defined above; n2 is 2.8 to 3.2; and m2 is 7.7 to 8.3; and one or more dimethylformamide molecules is capable of decreasing the stirring time upon dissolution in an organic solvent such as DMSO, as well as decreasing the hysteresis and improving the solar cell characteristics (in particular, photoelectric conversion efficiency) when the complex is applied to a perovskite layer.
    Type: Application
    Filed: December 16, 2016
    Publication date: December 20, 2018
    Inventors: Atsushi Wakamiya, Yumi Hirose, Ai Shimazaki
  • Publication number: 20180151625
    Abstract: The present technology relates to a solid-state image sensor, a photoelectric conversion film, an electron blocking layer, an imaging apparatus, and an electronic device that can appropriately photoelectrically convert light of specific wavelengths with high spectral characteristics and high photoelectric conversion efficiency. A photoelectric conversion layer or an electron blocking layer is configured with a photoelectric conversion film made of only a compound represented by Chemical Formula (1). The present technology can be applied to a solid-state image sensor.
    Type: Application
    Filed: May 25, 2016
    Publication date: May 31, 2018
    Inventors: YUTA HASEGAWA, NOBUYUKI MATSUZAWA, DAISUKE HOBARA, ATSUSHI WAKAMIYA
  • Patent number: 9818955
    Abstract: The compound represented by the following general formula is useful as a light emitting material. Ar1 represents an arylene group, Ar2 and Ar3 represent an aryl group, and R1 to R8 represent a hydrogen atom or a substituent, provided that at least one of R1 to R8 represents a diarylamino group.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: November 14, 2017
    Assignee: KYULUX, INC.
    Inventors: Hironori Kaji, Hajime Suzuki, Katsuaki Suzuki, Hajime Oiwa, Atsushi Wakamiya, Tatsuya Fukushima, Furitsu Suzuki, Yasujiro Murata, Katsuyuki Shizu, Chihaya Adachi
  • Publication number: 20170069845
    Abstract: Provided are: a macromolecular compound for providing an organic semiconductor material exhibiting excellent conversion efficiency; a starting-material compound having high material design freedom; and methods for producing the same. The macromolecular compound according to the present invention comprising a benzobisthiazole structural unit represented by the formula (1): [in the formula (1), T1 and T2 each independently represent an alkoxy group, a thioalkoxy group, a thiophene ring optionally substituted by a hydrocarbon group or an organosilyl group, a thiazole ring optionally substituted by a hydrocarbon group or an organosilyl group, or a phenyl group optionally substituted by a hydrocarbon group, an alkoxy group, a thioalkoxy group, an organosilyl group, a halogen atom or a trifluoromethyl group; and B1 and B2 each represent a thiophene ring optionally substituted by a hydrocarbon group, a thiazole ring optionally substituted by a hydrocarbon group, or an ethynylene group].
    Type: Application
    Filed: February 3, 2015
    Publication date: March 9, 2017
    Applicant: TOYOBO CO., LTD.
    Inventors: Atsushi Wakamiya, Kazutake Hagiya, Shiro Hamamoto, Hikaru Tanaka
  • Publication number: 20160020402
    Abstract: The compound represented by the following general formula is useful as a light emitting material. Ar1 represents an arylene group, Ar2 and Ar3 represent an aryl group, and R1 to R8 represent a hydrogen atom or a substituent, provided that at least one of R1 to R8 represents a diarylamino group.
    Type: Application
    Filed: February 28, 2014
    Publication date: January 21, 2016
    Inventors: Hironori KAJI, Hajime SUZUKI, Katsuaki SUZUKI, Hajime OIWA, Atsushi WAKAMIYA, Tatsuya FUKUSHIMA, Furitsu SUZUKI, Yasujiro MURATA, Katsuyuki SHIZU, Chihaya ADACHI
  • Publication number: 20140058099
    Abstract: The compounds represented fey the following general formula is is thermally stable and has excellent characteristics as a charge transport material [Ar1 represents a single bond, a benzene ring, etc.; X1 represents a linking group that links via an oxygen atom, a sulfur atom, a carbon atom, a nitrogen atom, a phosphorus atom or a silicon atom; either one of L1 and L2, and L3 and L4 bond to each other to represent a linking group that links via an oxygen atom, a sulfur atom, a carbon atom, a nitrogen atom, a phosphorus atom or a silicon atom; the other of L1 and L2, and L3 and L4 represent a hydrogen atom or a substituent; Y1 represents a linking group that links via a nitrogen atom, a boron atom or a phosphorus atom; R1, R2, R5 to R7 and R10 to R12 represent a hydrogen atom or a substituent; and n1 indicates an integer of 2 or more.].
    Type: Application
    Filed: March 2, 2012
    Publication date: February 27, 2014
    Applicant: KYUSHU UNIVERSITY NATIONAL UNIVERSITY CORPORATION
    Inventors: Atsushi Wakamiya, Hidetaka Nishimura, Yasujiro Murata, Tatsuya Fukushima, Hironori Kaji
  • Publication number: 20140020761
    Abstract: Provided is an inexpensive and high-performance dye compound that does not use an expensive precious metal and does not require the use of a strong electron-withdrawing group. The compound is formed such that a boron substituent is introduced into a heteroatom-containing ? electron-based backbone containing a double bond between carbon and the heteroatom to obtain a compound in which a backbone having boron and a coordination bond in a molecule thereof is used as a ? electron-accepting backbone.
    Type: Application
    Filed: March 9, 2012
    Publication date: January 23, 2014
    Applicant: KYOTO UNIVERSITY
    Inventors: Atsushi Wakamiya, Takuhiro Taniguchi, Yasujiro Murata, Joanne Ting Dy, Hiroshi Segawa
  • Publication number: 20100308313
    Abstract: [Object] To provide a wide band-gap material capable of forming a stable amorphous thin film and an organic electroluminescent device using such a compound and having a high light emission efficiency. [Solution] It has been found that a novel oligophenylene derivative, which is applicable as an organic electroluminescent material, can be produced efficiently using a cross-coupling reaction. It has also been found that a highly-efficient blue phosphorescent light-emitting device can be produced using this compound. The present invention is based on these findings.
    Type: Application
    Filed: December 19, 2008
    Publication date: December 9, 2010
    Inventors: Shigehiro Yamaguchi, Atsushi Wakamiya, Chihaya Adachi, Masayuki Yahiro, Ayataka Endo, Toshihisa Ide, Masutaka Shinmen