Abstract:
PROBLEM TO BE SOLVED: To provide a low-resistance wiring using a carbon nanotube.SOLUTION: A semiconductor device according to an embodiment comprises: an underlayer wiring on a substrate; an interlayer insulating film in which a contact hole is formed on the underlayer wiring; a catalyst metal layer containing catalyst metal particles formed at a bottom part of the contact hole; a multi-layer carbon nanotube formed on the catalyst metal layer and penetrating the contact hole; and an upper-layer wiring formed on the multi-layer carbon nanotube. Atoms or molecules are inserted between layers of the multi-layer carbon nanotube.
Abstract:
PROBLEM TO BE SOLVED: To provide a conductive film having a large-area graphene.SOLUTION: A conductive film according to an embodiment comprises catalyst metal microparticles and a graphene which spreads in a reticular fashion by using the catalyst metal microparticles as nodes.
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a semiconductor device including a high quality graphene having a lower resistivity than the conventional and fewer crystal defects as much as possible.SOLUTION: The manufacturing method of a semiconductor device comprises a step of forming a promoter layer having a face-centered cubic structure above the surface of a semiconductor substrate. The promoter layer is formed so that the (111) plane of the face-centered cubic structure is oriented in parallel with the surface of a semiconductor substrate. A catalyst layer having a face-centered cubic structure is formed on the promoter layer. The catalyst layer is formed so that the (111) plane of the face-centered cubic structure is oriented in parallel with the surface of a semiconductor substrate. A portion of the promoter layer in contact with the catalyst layer has a face-centered cubic structure. The catalyst layer is subjected to oxidation treatment and then subjected to reduction treatment thus planarizing the exposed surface of the catalyst layer. Finally, a graphene layer is formed on the catalyst layer.
Abstract:
PROBLEM TO BE SOLVED: To provide multi-layer graphene wiring and a semiconductor device having the multi-layer graphene wiring.SOLUTION: Wiring includes a substrate, a metal film provided on the substrate, a metal portion provided on the metal film, and graphene wiring formed on the metal portion. The graphene wiring is electrically in contact with the metal film, and the metal film and the metal portion are composed of different metal or alloys.
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor light-emitting element capable of being driven by current and having a small size and a simple manufacturing process, and to provide a method of manufacturing the same.SOLUTION: A semiconductor light-emitting element comprises: a semiconductor substrate; a semiconductor light-emitting layer and a dielectric layer constituting a light-emitting element, formed above the semiconductor substrate; and a carbon nano-tube or a graphene layer formed above and on the semiconductor light-emitting layer and the dielectric layer.
Abstract:
PROBLEM TO BE SOLVED: To achieve reduction in via resistance and facilitation of processes while using a carbon nanotube (CNT) as a contact material in a via hole.SOLUTION: A semiconductor device which uses CNTs for vias between wiring layers include an interlayer insulating film 19 provided on a substrate having Cu wirings 17 on a surface, via holes formed in the interlayer insulating film 19 and connected to the Cu wirings 17, first metal films 21 formed selectively on the Cu wirings 17 exposed in the via holes to serve as barriers for the Cu wiring 17s and also as promoters for growth of CNTs, second metal films 22 formed at least on the first metal films 21 in the via holes to serve as a catalyst for the growth of the CNTs, and the CNTs 23 formed in the via holes wherein the first and second metal films 21 and 22 are formed.
Abstract:
PROBLEM TO BE SOLVED: To provide an electron emission element with a high electron emitting amount and large current density, and to provide an electron emission device. SOLUTION: The electron emission element comprises a conductive substrate, a first conductive-type first diamond layer formed on the conductive substrate, and a first conductive-type second diamond layer formed on the first diamond layer. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a heat sink and an electronic device which is high in thermal conductivity, and which is excellent in cooling efficiency and a method for manufacturing them. SOLUTION: A heat sink 20 is provided with a base 21 part formed of an insulating diamond substrate having insulation and a first pressure welding body 221 and a second pressure welding body 222 formed of an insulating diamond substrate, and arranged on the base part 21. The electronic device 1 is provided with a heat sink 20 on the surface of the device main body 10, and the first pressure welding body 221 is pressure-welded to a heating part 12, and a second welding body 222 is pressure-welded to a non-heating part 13. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor light emitting element whose light emitting efficiency is high, and whose heating is reduced. SOLUTION: This semiconductor light emitting element is provided with a first semiconductor layer 3, a light emitting layer 4 arranged on the first semiconductor layer 3 whose refractive index is smaller than that of the first semiconductor layer 3, a second semiconductor layer 5 arranged on the light emitting layer 4 whose refractive index is smaller than that of the light emitting layer 4, and metallic electrodes 6a and 6b connected to the first semiconductor layer 3 and the second semiconductor layer 5 for supplying currents to the light emitting layer 4. COPYRIGHT: (C)2007,JPO&INPIT