Patents by Inventor Chihaya Adachi

Chihaya Adachi 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: 20230283050
    Abstract: Disclosed are a current excitation type organic semiconductor laser containing a pair of electrodes, an organic laser active layer and an optical resonator structure between the pair of electrodes and a laser having an organic layer on a distributed feedback grating structure. The lasers include a continuous-wave laser, a quasi-continuous-wave laser and an electrically driven semiconductor laser diode.
    Type: Application
    Filed: May 11, 2023
    Publication date: September 7, 2023
    Inventors: Chihaya ADACHI, Sangarange Don Atula SANDANAYAKA, Toshinori MATSUSHIMA, Kou YOSHIDA, Jean-Charles RIBIERRE, Fatima BENCHEIKH, Kenichi GOUSHI, Takashi FUJIHARA
  • Publication number: 20230225147
    Abstract: An organic light-emitting device having a perovskite layer having a thickness of 50 nm or more has a low drive voltage and a high power efficiency, and can suppress interelectrode short-circuiting and current leakage.
    Type: Application
    Filed: March 2, 2023
    Publication date: July 13, 2023
    Inventors: Toshinori MATSUSHIMA, Chihaya ADACHI, Chuanjiang QIN, Sangarange Don Atula SANDANAYAKA, Fatima BENCHEIKH, Takeshi KOMINO
  • Publication number: 20230198230
    Abstract: Disclosed is a current-injection organic semiconductor laser diode comprising a pair of electrodes, an optical resonator structure, and one or more organic layers including a light amplification layer composed of an organic semiconductor, which has a sufficient overlap between the distribution of exciton density and the electric field intensity distribution of the resonant optical mode during current injection to emit laser light.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 22, 2023
    Inventors: Sangarange Don Atula SANDANAYAKA, Fatima BENCHEIKH, Kenichi GOUSHI, Jean-Charles RIBIERRE, Chihaya ADACHI, Takashi FUJIHARA, Toshinori MATSUSHIMA
  • Publication number: 20230157149
    Abstract: An organic-inorganic perovskite satisfying ET<ET1 and ES-ET?0.1 eV has a high emission efficiency. ES represents the excited singlet energy level in emission of an inorganic component, ET represents the excited triplet energy level in emission of an inorganic component, ET1 represents the excited triplet energy level in emission of an organic component.
    Type: Application
    Filed: January 5, 2023
    Publication date: May 18, 2023
    Inventors: Chuanjiang QIN, Toshinori MATSUSHIMA, Chihaya ADACHI
  • Publication number: 20230143779
    Abstract: A compound represented by the formula (1) has excellent lasing properties. G1 and G2 are H or substituent; FL1 and FL2 are represented by the formula (2); BT is represented by the formula (4); and n1, n2 and m are 1 to 5.
    Type: Application
    Filed: February 9, 2021
    Publication date: May 11, 2023
    Inventors: Anthony D'ALEO, Jean Charles Maurice RIBIERRE, Fatima BENCHEIKH, Virginie Simone Francoise PLACIDE, Masashi MAMADA, Chihaya ADACHI
  • Patent number: 11637244
    Abstract: A compound represented by the following general formula is excellent in light emission properties. R1 and R2 each independently represent a fluorinated alkyl group, D represents a substituent in which Hammett's ?p value is negative, and A represents a substituent in which Hammett's ?p value is positive.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 25, 2023
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KYULUX, INC.
    Inventors: Yan Geng, Chihaya Adachi, Hajime Nakanotani, Naoto Notsuka, Keiro Nasu
  • Patent number: 11626710
    Abstract: Disclosed is a current-injection organic semiconductor laser diode comprising a pair of electrodes, an optical resonator structure, and one or more organic layers including a light amplification layer composed of an organic semiconductor, which has a sufficient overlap between the distribution of excitor density and the electric field intensity distribution of the resonant optical mode during current injection to emit laser light.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: April 11, 2023
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KOALA TECH INC.
    Inventors: Sangarange Don Atula Sandanayaka, Fatima Bencheikh, Kenichi Goushi, Jean-Charles Ribierre, Chihaya Adachi, Takashi Fujihara, Toshinori Matsushima
  • Patent number: 11618730
    Abstract: Using a compound that contains a structure where a carbazol-9-yl group substituted with a perfluoroalkyl group at the 2-position and the 7-position and a structural unit having a positive Hammett constant ?p (but excluding an aromatic hydrocarbon group) bond to each other directly or via a ?-conjugated linking group, wherein at least a part of the carbazol-9-yl group and at least a part of the structural unit having a positive Hammett constant ?p and, if any, the ?-conjugated linking group form a ?-electron conjugated system, an organic light emitting device having a high emission efficiency can be provided.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: April 4, 2023
    Assignee: TOYOBO CO., LTD.
    Inventors: Masayuki Yokoyama, Kazutake Hagiya, Chihaya Adachi
  • Publication number: 20230095786
    Abstract: A light emitting material containing an adjustment compound N in addition to a donor compound D and an acceptor compound A that form an exciplex and satisfying HOMO(D)>HOMO(N)>HOMO(A), LUMO(D)>LUMO(N)+0.1 eV and LUMO(N)>LUMO(A) has improved luminous efficiency or emission lifetime.
    Type: Application
    Filed: January 6, 2021
    Publication date: March 30, 2023
    Inventors: Hajime NAKANOTANI, Chihaya ADACHI, Hayato KAKIZOE, Ayataka ENDO
  • Publication number: 20230053098
    Abstract: Provided is an organic light-emitting element that is excited by an electromagnetic wave. The organic light-emitting element includes: a first electrode; a second electrode disposed to face the first electrode; an organic light-emitting layer disposed between the first electrode and the second electrode, where separation of charges occurs due to incidence of the electromagnetic wave; a hole transporting layer disposed between the first electrode and the organic light-emitting layer; and a charge block layer disposed between the second electrode and the organic light-emitting layer. The charge block layer has a LUMO level shallower than a LUMO level of organic light emitters included in the organic light-emitting layer.
    Type: Application
    Filed: August 9, 2022
    Publication date: February 16, 2023
    Applicants: HAMAMATSU PHOTONICS K.K., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Takahiko YAMANAKA, Shigeo HARA, Chihaya ADACHI, Hajime NAKANOTANI
  • Publication number: 20220416513
    Abstract: Disclosed are an element comprising a substrate and at least two different optoelectronic devices, wherein the at least two different optoelectronic devices are monolithically fabricated on the substrate; and a method for producing the same. Also disclosed is an organic semiconductor laser diode comprising a substrate, an insulating grating, a first electrode, an organic layer and a second electrode in this order.
    Type: Application
    Filed: November 27, 2020
    Publication date: December 29, 2022
    Inventors: Fatima BENCHEIKH, Takashi FUJIHARA, Jean Charles Maurice RIBIERRE, Ryutaro KOMATSU, Chihaya ADACHI, Kento TAKAHASHI, Nobuhiro TAKEISHI
  • Patent number: 11539190
    Abstract: Disclosed are a current excitation type organic semiconductor laser containing a pair of electrodes, an organic laser active layer and an optical resonator structure between the pair of electrodes and a laser having an organic layer on a distributed feedback grating structure. The lasers include a continuous-wave laser, a quasi-continuous-wave laser and an electrically driven semiconductor laser diode.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: December 27, 2022
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KOALA TECH INC.
    Inventors: Chihaya Adachi, Sangarange Don Atula Sandanayaka, Toshinori Matsushima, Kou Yoshida, Jean-Charles Ribierre, Fatima Bencheikh, Kenichi Goushi, Takashi Fujihara
  • Patent number: 11515491
    Abstract: Stable perovskite films having substantially-no phase transition within a predetermined temperature range are disclosed. In the films, formation of carrier traps is suppressed. Thermally stable perovskite solar cells and light-emitting devices using the films are also disclosed.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: November 29, 2022
    Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Chuanjiang Qin, Toshinori Matsushima, Chihaya Adachi
  • Patent number: 11505739
    Abstract: An organic long-persistent luminescent composition containing a first organic compound, a second organic compound and a third organic compound and satisfying the following expression (1) is a long-persistent luminescent material that facilitates emission color control. ES1(A) represents a lowest excited singlet energy level of emission from the first organic compound and the second organic compound, ES1(B) represents a lowest excited singlet energy level of the third organic compound. ES1(B)?ES1(A)?0.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: November 22, 2022
    Assignee: OKINAWA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL CORPORATION
    Inventors: Ryota Kabe, Kazuya Jinnai, Chihaya Adachi
  • Publication number: 20220344598
    Abstract: An organic electroluminescent device having an anode, a cathode, and a light emitting layer between the anode and the cathode, in which the light emitting layer contains a first organic compound, a second organic compound, and a third organic compound that satisfy the following expression (A), the second organic compound is a delayed fluorescent material, and the third organic compound is a light emitting material, is capable of enhancing the light emission efficiency. ES1(A), ES1(B) and ES1(C) represent a lowest, singlet excitation energy level of the first, second and third organic compound, respectively.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 27, 2022
    Inventors: Hajime NAKANOTANI, Chihaya ADACHI, Takahiro HIGUCHI, Taro FURUKAWA
  • Patent number: 11482679
    Abstract: A light-emitting device having a light-emitting layer containing a delayed fluorescence emitter and an n-type compound has an extended lifetime and high performance. A compound having a triazine ring substituted by a spiro aromatic group can be used as the n-type compound.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: October 25, 2022
    Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Linsong Cui, Hajime Nakanotani, Chihaya Adachi
  • Patent number: 11476435
    Abstract: Using a perovskite-type compound, an inexpensive host material having a high carrier mobility can be provided. Using a perovskite-type compound as a host material, an inexpensive organic light-emitting device having a high emission efficiency can be realized.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 18, 2022
    Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Toshinori Matsushima, Chihaya Adachi, Chuanjiang Qin, Sangarange Don Atula Sandanayaka, Fatima Bencheikh, Takeshi Komino
  • Publication number: 20220320828
    Abstract: Disclosed is a method for producing a laminate of a resin film and a perovskite film, including compressing a preliminary product having a resin film, a perovskite film and an inorganic support in that order with heating, followed by separating the laminate of a resin film and a perovskite film from the inorganic support.
    Type: Application
    Filed: June 5, 2020
    Publication date: October 6, 2022
    Inventors: Matthew Ryan LEYDEN, Toshinori MATSUSHIMA, Chihaya ADACHI
  • Publication number: 20220311218
    Abstract: Disclosed are a current excitation type organic semiconductor laser containing a pair of electrodes, an organic laser active layer and an optical resonator structure between the pair of electrodes and a laser having an organic layer on a distributed feedback grating structure. The lasers include a continuous-wave laser, a quasi-continuous-wave laser and an electrically driven semiconductor laser diode.
    Type: Application
    Filed: February 17, 2022
    Publication date: September 29, 2022
    Inventors: Chihaya ADACHI, Sangarange Don Atula SANDANAYAKA, Toshinori MATSUSHIMA, Kou YOSHIDA, Jean-Charles RIBIERRE, Fatima BENCHEIKH, Kenichi GOUSHI, Takashi FUJIHARA
  • Patent number: 11450817
    Abstract: An organic electroluminescent device having an anode, a cathode, and a light emitting layer between the anode and the cathode, in which the light emitting layer contains a first organic compound, a second organic compound, and a third organic compound that satisfy the following expression (A), the second organic compound is a delayed fluorescent material, and the third organic compound is a light emitting material, is capable of enhancing the light emission efficiency. ES1(A), ES1(B) and ES1(C) represent a lowest singlet excitation energy level of the first, second and third organic compound, respectively.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: September 20, 2022
    Assignee: KYULUX, INC.
    Inventors: Hajime Nakanotani, Chihaya Adachi, Takahiro Higuchi, Taro Furukawa