摘要:
A semiconductor device in which an NMOSFET and a PMOSFET are formed in a silicon substrate, wherein the gate electrodes of NMOSFET and PMOSFET are made of metallic materials, an Si—Ge layer is formed in at least part of the surface regions including the respective channel layers of the NMOSFET and PMOSFET, and the concentration of Ge in the channel layer of the NMOSFET is lower than the concentration of Ge in the channel layer of the PMOSFET.
摘要:
A gas sensor including a metallic shell (1) and an element (2), which is disposed in a hollow portion formed in the metallic shell (1). An inorganic powder (4) is filled into a gap between the element (2) and the metallic shell (1) to thereby hermetically seal the element (2) and the metallic shell (1) against each other. By using an inorganic powder (4) which does not have an exothermic peak within a temperature range up to 700° C. when subjected to differential thermal analysis, gastightness maintained at the gap portion between the element (2) and the metallic shell (1) is not impaired even in a working environment of 600° C. or higher. Talc powder composed of SiO2 and MgO can be used as the inorganic powder (4). However, a binder, such as water glass, is not added to the inorganic powder (4) in order to prevent the inorganic powder (4) from having an exothermic peak within a temperature range up to 700° C., which peak would otherwise appear when the talc powder is subjected to thermal analysis. In order to attain good formability, a material stone of talc is pulverized into particles having a particle size of 400 &mgr;m to 600 &mgr;m and the particles are used as the inorganic powder (4).
摘要:
A semiconductor device includes a semiconductor region, a source region, a drain region, a source extension region a drain extension region, a first gate insulation film, a second gate insulation film, and a gate electrode. The source region, drain region, source extension region and drain extension region are formed in a surface portion of the semiconductor region. The first gate insulation film is formed on the semiconductor region between the source extension region and the drain extension region. The first gate insulation film is formed of a silicon oxide film or a silicon oxynitride film having a nitrogen concentration of 15 atomic % or less. The second gate insulation film is formed on the first gate insulation film and contains nitrogen at a concentration of between 20 atomic % and 57 atomic %. The gate electrode is formed on the second gate insulation film.
摘要:
A manufacturing method for semiconductor device includes: forming an opening, in a surface of a semiconductor substrate being composed of first atom, the opening having an opening ratio y to an area of the surface of the semiconductor substrate ranging from 5 to 30%; forming an epitaxial layer in the opening, the epitaxial layer being made of a mixed crystal containing a second atom in a concentration ranging from 15 to 25%, and the second atom having a lattice constant different from a lattice constant of the first atom; implanting impurity ion into the epitaxial layer; and performing activation annealing at a predetermined temperature T, the predetermined temperature T being equal to or higher than 1150° C. and satisfies a relationship of y≦1E-5exp (21541/T).
摘要:
A manufacturing method for semiconductor device includes: forming an opening, in a surface of a semiconductor substrate being composed of first atom, the opening having an opening ratio y to an area of the surface of the semiconductor substrate ranging from 5 to 30%; forming an epitaxial layer in the opening, the epitaxial layer being made of a mixed crystal containing a second atom in a concentration ranging from 15 to 25%, and the second atom having a lattice constant different from a lattice constant of the first atom; implanting impurity ion into the epitaxial layer; and performing activation annealing at a predetermined temperature T, the predetermined temperature T being equal to or higher than 1150° C. and satisfies a relationship of y≦1E-5exp (21541/T).
摘要:
In a method of manufacturing a sensor, firstly, a plate-type detection element is inserted through an element-insertion through-hole of a first powder-compacted ring. Secondly, a flange section including at least the first powder-compacted ring is integrally assembled to the plate-type detection element, applying axially compressive pressure to the first powder-compacted ring so as to compressively deform the first powder-compacted ring such that the cross-sectional area of the element-insertion through-hole is reduced. Thirdly, the flange section is engaged, directly or via an intermediate member, with the stepped portion of the metallic shell at the time of disposing of the plate-type detection element in the through-hole of the metallic shell. A sensor prepared by the method is also disclosed.
摘要:
Preparing a stencil mask comprising a silicon thin film in which an opening for selectively irradiating charged particles to a semiconductor substrate is provided and whose irradiation surface on which the charged particles are irradiated is implanted with an impurity, and selectively irradiating charged particles to the semiconductor substrate using the stencil mask which is opposingly arranged on the semiconductor substrate.
摘要:
In a method of manufacturing a sensor, firstly, a plate-type detection element is inserted through an element-insertion through-hole of a first powder-compacted ring. Secondly, a flange section including at least the first powder-compacted ring is integrally assembled to the plate-type detection element, applying axially compressive pressure to the first powder-compacted ring so as to compressively deform the first powder-compacted ring such that the cross-sectional area of the element-insertion through-hole is reduced. Thirdly, the flange section is engaged, directly or via an intermediate member, with the stepped portion of the metallic shell at the time of disposing of the plate-type detection element in the through-hole of the metallic shell. A sensor prepared by the method is also disclosed.
摘要:
A semiconductor device includes: a layer provided on or above a semiconductor substrate, having an opening, and containing Si and Ge; and a gate provided at a position corresponding to the opening. It is possible to provide a semiconductor device and a manufacturing method of the same which realize easy control of a recess amount and reduction in damage at the time of the recessing.
摘要:
A gas sensor 100 includes: a cylindrical metal shell 110; a gas detection element 120; a cylindrical sleeve 170 at least partially located inside the metal shell 110, and an axial hole 170c penetrating through the sleeve and accommodating the gas detection element 120 therein; and a connector 180 joined to a rear end portion of the gas detection element 120 and spaced apart from the sleeve 170, the connector 180 including a plurality of connector terminal portions 182 to 186 electrically connected to corresponding electrode terminal portions 125 to 129.