Japan Science and Technology Agency

Tokyo Institute of Technology

Asahi Glass Company, Limited

Agc Inc.

Yoshitake Toda

Hideo Hosono

Toshiharu Yokoyama

Satoru Watanabe

Naomichi Miyakawa

Toshinari Watanabe

Kazuhiro Ito

Masaaki Kitano

Michikazu Hara

Satoru Matsuishi

Fumitaka Hayashi

Setsuro Ito

Masahiro Hirano

Nobuhiro Nakamura

Katsuro Hayashi

Yasunori Inoue

Shintaro Ishiyama

Akira Mitsui

Masashi Miyakawa

Toshio Kamiya

Kazuhiko Yamada

Jiang Li

Satoru Tomeno

Tomofumi Susaki

Sungwng Kim

Sung Wng Kim

Kazuto Ohkoshi

Hiroshi Kaga

Yangfan Lu

Katsurou Hayashi

Kohtaro Osakada

Daisuke Takeuchi

Hiroki Takahashi

Masami Taguchi

Tomofumi Tada

Tadahiro Fujihashi

Haritha Buchammagari

An oxide ion-conducting solid electrolyte containing a mayenite-type compound having a representative composition represented by CaAlO, and 9 mol % to 30 mol % of titanium (Ti) in terms of TiO.

Oxide ion-conducting solid electrolyte

Disclosed herein is an amorphous C12A7 electride thin film which has an electron density of greater than or equal to 2.0×10cmand less than or equal to 2.3×10cm, and exhibits a light absorption at a photon energy position of 4.6 eV. Also disclosed herein is an amorphous thin film which is fabricated using a target made of a crystalline C12A7 electride, and containing an electride of an amorphous solid material including calcium, aluminum, and oxygen, in which an Al/Ca molar ratio of the thin film is 0.5 to 4.7.

Metal oxide thin film, organic electroluminescence element including the thin film, solar cell, and thin film fabrication method

An electrolytic cell capable of simply electrolyzing carbon dioxide into carbon monoxide and oxygen with low activation energy, and an electrolytic device. The carbon dioxide electrolytic cell includes a cathode, an anode, and a solid electrolyte having oxide ion conductivity. The cathode is the following (A) or (B); (A) a metal and a first mayenite-type compound are included therein or (B) a metal and a second mayenite-type compound are included therein, said second mayenite type compound including a mayenite type compound having electron conductivity.

Electrolytic cell and electrolytic device

A thin film of metal oxide includes zinc (Zn); tin (Sn); silicon (Si); and oxygen (O). In terms of oxide, based on 100 mol % of total of oxides of the thin film, SnOis greater than 15 mol % but less than or equal to 95 mol %.

Thin film of metal oxide, organic electroluminescent device including thin film, photovoltaic cell including thin film, and manufacturing method of thin film

Provided is a manufacturing method with which it is possible to convert a mayenite-type compound to an electride, wherein a reducing agent is not required, reaction conditions include a temperature that is lower than that in the related art, and the reaction is performed more quickly in a simple manner, and, additionally, by requiring a lower amount of energy. Provided is a method for manufacturing an electride of mayenite-type compounds, the method being characterized in that a mayenite-type compound is converted to an electride by making a current directly flow through the mayenite-type compound by applying a voltage to the mayenite-type compound in a heating state.

Method for manufacturing electride of mayenite-type compounds

A thin film of amorphous metal oxide includes zinc (Zn), silicon (Si) and oxygen (O), the atomic ratio of Zn/(Zn+Si) being 0.30 to 0.95.

Thin film of metal oxide, organic electroluminescent device including the thin film, photovoltaic cell including the thin film and organic photovoltaic cell including the thin film

An electride, which is more stable and can be more easily obtained, is provided or is made available, and as a result, a catalyst particularly useful for chemical synthesis, in which the electride is particularly used, is provided. A transition metal-supporting intermetallic compound having a transition metal supported on an intermetallic compound represented by the following formula (1): AX. . . (1) wherein A represents a rare earth element, and X represents Si or Ge.

Transition-metal-supporting intermetallic compound, supported metallic catalyst, and ammonia producing method

A light-emitting device includes a pair of first electrodes arranged separated from and opposing each other on a first surface of a substrate; a light-emitting layer arranged on at least one of the first electrodes; a second electrode arranged on the light-emitting layer; and a bridge layer connecting the first electrodes. The bridge layer is formed of a material having a resistance that falls within a range of 100 k&#x3a9; to 100 M&#x3a9;.

Light-emitting device, display apparatus and lighting apparatus

A C12A7 electride thin film fabrication method includes a step of forming an amorphous C12A7 electride thin film on a substrate by vapor deposition under an atmosphere with an oxygen partial pressure of less than 0.1 Pa using a target made of a crystalline C12A7 electride having an electron density within a range of 2.0&#xd7;10cmto 2.3&#xd7;10cm.

C12A7 electride thin film fabrication method and C12A7 electride thin film

If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 10cmor more and a specific surface area of 5 mgor more is produced by: the following steps: (1) forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.

Method for producing conductive mayenite compound powder having large specific surface area

A metal-supporting catalyst for decomposing ammonia into hydrogen and nitrogen. The catalyst shows a high performance with a low cost and being advantageous from the viewpoint of resources, and an efficient method for producing hydrogen using the catalyst. The catalyst catalytically decomposes ammonia gas to generate hydrogen. The hydrogen generation catalyst includes, as a support, a mayenite type compound having oxygen ions enclosed therein or a mayenite type compound having 10cmor more of conduction electrons or hydrogen anions enclosed therein, and metal grains for decomposing ammonia are supported on the surface of the support. Hydrogen is produced by continuously supplying 0.1-100 vol % of ammonia gas to a catalyst layer that comprises the aforesaid catalyst, and reacting the same at a reaction pressure of 0.01-1.0 MPa, at a reaction temperature of 300-800&#xb0; C. and at a weight hourly space velocity (WHSV) of 500/mlghor higher.

Catalyst for producing hydrogen and method for producing hydrogen

A method for depositing a magnesium oxide thin film on a substrate by a laser abrasion method using a sintered body or single crystal of magnesium oxide as a target. In this method, a flat processed film made of magnesium oxide having a (111) plane as its front surface is prepared, using a substrate made of strontium titanate having a (111) plane as its principal surface or yttria-stabilized zirconia having a (111) plane as its principal surface, by directly depositing a film on the principal surface of the substrate and epitaxially growing the film.

Method for forming magnesium oxide thin film and processed plate

If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 10cmor more and a specific surface area of 5 mgor more is produced by: (1) a step for forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) a step for forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) a step for forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) a step for injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.

Method for producing conductive mayenite compound powder

A light emitting device including an organic electroluminescence element is provided. The light emitting device may be a display device or a lighting device. The organic electroluminescence element includes an anode, a light emitting layer, and a cathode that are arranged in this order. An electron injection layer is arranged between the light emitting layer and the cathode. The electron injection layer is made of an amorphous C12A7 electride.

Organic electroluminescence element

The present invention provides a catalyst substance that is stable and performs well in the synthesis of ammonia, one of the most important chemical substances for fertilizer ingredients and the like. The catalyst substance exhibits catalytic activity under mild synthesis conditions not requiring high pressure, and is also advantageous from a resource perspective. Further provided is a method for producing the same. This catalyst comprises a supported metal catalyst that is supported on a mayenite type compound including conduction electrons of 10cmor more and serving as a support for the ammonia synthesis catalyst. The mayenite type compound used as the support may take any form, including that of powder, a porous material, a sintered body, a thin-film, or a single crystal. Use of this catalyst makes it possible to increase the electron donating ability toward a transition metal.

Growing community of inventors

Tokyo, Japan

Yoshitake Toda