摘要:
A method for forming an insulating film on the surface of a silicon semiconductor substrate of a semiconductor device. The semiconductor substrate is subjected to a direct thermal nitridation, in a gas atmosphere containing nitrogen or nitrogen atoms. The semiconductor substrate has an average concentration of oxygen of not more than 10.sup.18 /cm.sup.3. The silicon nitride film formed by the direct thermal nitridation is thin, even and amorphous. The structure of the interface between the silicon substrate and the silicon nitride film is highly dense.
摘要:
A silicon nitride film is generated by heating a silicon substrate having an exposed surface in an ambient including ammonia thereby causing the exposed silicon to react with nitrogen atoms. The substrate is heated to a temperature of at least 900.degree. C. in an inert gas, such as argon, whereby the natural oxide film or impurity particles on the surface are subject to vapor etching. The substrate is then heated to a temperature in a range of 900.degree. C. to 1300.degree. C. in the ambient, including ammonia, to produce a dense and homogeneous amorphous silicon nitride film.
摘要:
In a method of forming an insulating film on the surface of a silicon substrate, a silicon nitride film is formed on such surface by direct thermal nitridation. The nitridation is initially in an ambient gas of nitrogen whereby a comparatively thick silicon nitride film is formed. The ambient gas is then changed to ammonia or a mixture of an inert gas and ammonia to densify the silicon nitride film. The resultant film is useful as an insulating film in semiconductor devices, masks for impurity diffusion and selective oxidation in the manufacture thereof.
摘要:
An insulating film layer consisting of silicon oxynitride is formed on a silicon semiconductor substrate surface by bringing a surface of a silicon substrate into contact with an ammonia gas atmosphere containing a gas comprising containing substance gas, for example, oxygen gas, carbon dioxide gas, carbon monoxide gas, nitrogen monoxide gas, nitrogen dioxide gas, or water vapor, in a volume concentration of from 10.sup.2 to 10.sup.4 ppm in terms of molecular oxygen, at an elevated temperature, for example, of from 900.degree.to 1300.degree. C.
摘要:
An insulative film, such as SiO.sub.2, Si.sub.3 N.sub.4 and PSG films, for example, is commonly used the passivation film or gate electrode of MISFETs. Stability of the insulative films during the production or operation of the semiconductor devices is enhanced by providing an insulative film which is formed by nitridation, for example, in an NH.sub.3 gas, of an SiO.sub.2 film, preferably a directly thermally oxidized film of silicon. The insulative film according to the present invention is used for a gate insulation film in MISFETs, a capacitor or passivation film for semiconductor devices, and as a mask for selectively forming circuit elements of semiconductor devices. The process for forming the insulative film may comprise successive nitridation, oxidation and nitridation steps.
摘要:
In a method for forming an insulating film on a semiconductor substrate surface, the silicon nitride of the insulating film has been formed by a plasma CVD or a direct nitridation. In the present invention, a gas plasma of a nitrogen-containing gas is generated in a direct nitridation reaction chamber, and the semiconductor silicon body is heated to a temperature of from approximately 800 to approximately 1300.degree. C. within the gas plasma atmosphere, thereby forming the silicon nitride film. The resulting silicon nitride film has a dense structure and a low oxygen concentration and a thick silicon nitride film is formed in a short period by direct nitridation of silicon.
摘要:
An insulative film, such as SiO.sub.2, Si.sub.3 N.sub.4 and PSG films, is commonly used, for example, the passivation film or to insulate the gate electrode of MISFETs. Stability of the insulative films during the production or operation of the semiconductor devices is enhanced by providing an insulative film which is formed by nitridation, for example, in an NH.sub.3 gas, of an SiO.sub.2 film, preferably a directly thermally oxidized film of silicon. The insulative film according to the present invention is used for a gate insulation film in MISFETs, a capacitor or passivation film for semiconductor devices, and as a mask for selectively forming circuit elements of semiconductor devices. The process for forming the insulative film may comprise successive nitridation, oxidation and nitridation steps.
摘要翻译:通常使用诸如SiO 2,Si 3 N 4和PSG膜的绝缘膜,例如钝化膜或使MISFET的栅电极绝缘。 通过提供通过例如在NH 3气体中形成SiO 2膜,优选直接热氧化的硅膜形成的绝缘膜来增强半导体器件的生产或操作期间的绝缘膜的稳定性。 根据本发明的绝缘膜用于MISFET中的栅极绝缘膜,用于半导体器件的电容器或钝化膜,以及用于选择性地形成半导体器件的电路元件的掩模。 形成绝缘膜的方法可以包括连续的氮化,氧化和氮化步骤。
摘要:
A nonvolatile semiconductor memory device comprising: a substrate, a pair of source and drain regions; a channel region between the source and drain regions; a pair of first and second insulating layers on the channel region, and a floating-gate or traps between the first and second insulating layer. The band gap of the first insulating layer increases gradually from the substrate to the floating gate or the traps.
摘要:
A conductive film includes a layer 1 formed by a conductive material 1 that includes a polymer material 1 containing any of (1) an amine and an epoxy resin (where the epoxy resin and the amine are mixed in a ratio of 1.0 or more in terms of the ratio of the number of active hydrogen atoms in the amine with respect to the number of functional groups in the epoxy resin), (2) a phenoxy resin and an epoxy resin, (3) a saturated hydrocarbon polymer having a hydroxyl group, and (4) a curable resin and an elastomer and conductive particles 1. The conductive film has excellent stability in an equilibrium potential environment in a negative electrode and low electric resistance per unit area in the thickness direction. A multilayer conductive film including the conductive film achieves excellent interlayer adhesion, and using them as a current collector enables the production of a battery satisfying both weight reduction and durability.
摘要:
A bearing assembly includes an IC tag with information to be reliably exchanged between the IC tag and an external reader/writer, and a rolling bearing including outer and inner races and rolling elements disposed between the outer and inner races. The IC tag communicates with the external reader/writer device without contacting the reader/writer device, is attached to a metal member of the rolling bearing, includes a tag antenna, and is configured so information can be exchanged between the tag antenna and a reader/writer antenna of the reader/writer device by forming a closed magnetic circuit between the tag antenna and the reader/writer antenna. The IC tag is received in a hole in a metal member surface. The tag antenna includes at least two protrusions facing the opening of the hole and arranged so magnetic fluxes leaving/entering the protrusions pass inside the edge defining the hole opening and extend outside the hole.