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    Phosphor, Method for Producing Same and Light Emitting Element
    42.
    发明申请
    Phosphor, Method for Producing Same and Light Emitting Element 有权

    公开(公告)号：US20220177780A1

    公开(公告)日：2022-06-09

    申请号：US17600575

    申请日：2020-03-16

    Applicant: National Institute for Materials Science

    Inventor： Naoto HIROSAKI

    IPC: C09K11/77 ,  H01L33/50 ,  C01F17/30

    Abstract: Provided is a phosphor which emits near-infrared light upon irradiation of visible light or ultraviolet light. A phosphor in an embodiment of the present invention includes an inorganic substance which contains at least an Eu element, an M[3] element (M[3] is at least one selected from the group consisting of Al, Y, La and Gd.), a Si element and nitrogen element, and also contains, if necessary, at least one element selected from the group consisting of M[1] element (M[1] is Li element.), an M[2] element (M[2] is at least one element selected from the group consisting of Mg, Ca, Ba and Sr.) and an oxygen element, while the phosphor has a maximum value of an emission peak at a wavelength in the range of 760 nm or more and 850 nm and less upon irradiation by an excitation source.

    CONDENSATION DETECTION ELEMENT
    46.
    发明申请
    CONDENSATION DETECTION ELEMENT 有权

    公开(公告)号：US20220003701A1

    公开(公告)日：2022-01-06

    申请号：US17292947

    申请日：2019-11-11

    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

    Inventor： Jin KAWAKITA

    IPC: G01N25/66 ,  G01N27/30 ,  G01N27/403

    Abstract: A condensation detection element comprises a condensation detection unit, the condensation detection unit being formed on a first substrate unit, and a peripheral circuit unit, the peripheral circuit unit being formed on a second substrate unit. The condensation detection unit comprises a thin wire electrode of a first metal and a thin wire electrode of a second metal. The condensation detection unit is configured to detect the presence or absence of water droplet that comes into contact with the thin wire electrode of the first metal and the thin wire electrode of the second metal by a current flowing between the thin wire electrode of the first metal and the thin wire electrode of the second metal. The first substrate unit has a higher thermal conductivity and a lower heat capacity than the second substrate unit.

    GAN CRYSTAL AND SUBSTRATE
    47.
    发明申请
    GAN CRYSTAL AND SUBSTRATE 有权

    公开(公告)号：US20210384336A1

    公开(公告)日：2021-12-09

    申请号：US17406218

    申请日：2021-08-19

    Applicant: MITSUBISHI CHEMICAL CORPORATION ,  NATIONAL INSTITUTE FOR MATERIALS SCIENCE

    Inventor： Yuuki ENATSU ,  Yuichi OSHIMA

    IPC: H01L29/778 ,  H01L29/20 ,  H01L29/66 ,  H01L21/02

    Abstract: Provided are a GaN crystal used in a substrate for a nitride semiconductor device having a horizontal device structure such as GaN-HEMT, and a substrate used for production of a nitride semiconductor device having a horizontal device structure such as GaN-HEMT. The Gab crystal has a (0001) surface having an area of not less than 5 cm2, the (0001) surface having an inclination of not more than 10° with respect to the (0001) crystal plane, wherein the Fe concentration is not less than 5×1017 atoms/cm3 and less than 1×109 atoms/cm3, and wherein the total donor impurity concentration is less than 5×1016 atoms/cm3.

    Composition, a process of producing the same, and use of the same
    48.
    发明授权
    Composition, a process of producing the same, and use of the same 有权

    公开(公告)号：US11142687B2

    公开(公告)日：2021-10-12

    申请号：US16486017

    申请日：2018-03-01

    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

    Inventor： Tadaaki Nagao ,  Karuna Kar Nanda

    IPC: C09K11/65 ,  C09K11/02 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/182 ,  A01G7/00 ,  H01L33/50 ,  H01L31/055 ,  B82Y20/00 ,  C08L101/14

    Abstract: The present invention has for its object to provide a composition in which a photoluminescent carbon nanoparticle having no dependency of an emission wavelength on an excitation wavelength and being enhanced in terms of quantum efficiency is dispersed, a process of producing the same, and an application of the same. The composition of the invention has a photoluminescent carbon nanoparticle dispersed in a water-soluble solvent. The photoluminescent carbon nanoparticle contains a carbon atom, an oxygen atom, a nitrogen atom, and a hydrogen atom if required. As shown in FIG. 6, the photoluminescent carbon nanoparticle has an intensity of a C—N bond and/or C—O bond-derived peak (285.98 eV) larger than that of a C—C bond and/or C—H bond-derived peak (284.95 eV) in terms of X-ray photoelectron spectroscopic spectra, and a Raman spectrum having a peak based on a G-band and a D-band.

    SEARCH SYSTEM AND SEARCH METHOD
    50.
    发明申请
    SEARCH SYSTEM AND SEARCH METHOD 有权

    公开(公告)号：US20210279281A1

    公开(公告)日：2021-09-09

    申请号：US17261172

    申请日：2019-07-18

    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

    Inventor： Michiko YOSHITAKE

    IPC: G06F16/901 ,  G06F16/903 ,  G06F16/9032 ,  G06F16/9035 ,  G06F16/9038

    Abstract: Provided is a search system that executes a path search in a graph (a material property relationship graph) in which each material property parameter of a material property parameter pair whose relationship is already known is node and a relationship between the material property parameters is an edge, the search method capable of executing various search methods and various search systems. The search system includes a graph searcher that executes a path search in a material property relationship graph, and a search condition extractor that supplies a plurality of search items to the graph searcher based on search conditions to be input. The search condition extractor extracts, based on the input search conditions, a start point or an end point or both a start point and an end point, and a third node different from the start point and the end point or a path length condition and supplies the extracted items to the graph searcher as a search item. The graph searcher, depending on the supplied search items, searches the material property relationship graph, and outputs a path or a subgraph that matches the search condition as a search result.

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