摘要:
In a method for forming a thin film of a refractory metal on a substrate having a silicon layer and an insulating layer on a surface thereof, a halogen compound of the refractory metal is mixed with hydrogen gas for providing a material gas, hydrogen halide gas or a halogen gas consisting of a second halogen less electronegative than the first halogen forming the halogen compound of the refractory metal is added to the material gas, and by use of the thus obtained mixed gas, vapor phase deposition refractory metal is effected selectively on the surface of the silicon layer of the substrate.
摘要:
A method of producing a semiconductor device, including the steps of introducing an impurity of one conductivity type into a semiconductor substrate of an opposite conductivity type having an insulating film pattern formed on a surface thereof, using the insulating film pattern as a mask to form a diffusion layer; and forming a metal film on the diffusion layer by selective vapor growth with a mixture of a metal source gas and a carrier gas used as a feed gas. The vapor growth is carried out such that the distance of entry of the metal film from the edge of the insulating film pattern to the interface between the insulating film pattern and the diffusion layer is smaller than the depth of the pn junction of the diffusion layer. The particular method makes it possible to achieve a selective vapor growth of a metal film on the diffusion layer without deteriorating the pn junction characteristics.
摘要:
First conductive members are buried in first holes formed in a first insulating film to connect the second interconnection layers, formed through first and second insulating films, to a semiconductor substrate. Second conductive members are buried in second holes formed to be positioned on the first holes of the second insulating film. Thus, the reliability of a semiconductor device of a multi-layer interconnection structure is improved, and the integration thereof is improved.
摘要:
A method of forming a conductive film on an insulating region of a substrate wherein a surface of the insulating region formed on the substrate is activated by irradiating the surface with electrons, ions or light. Next, a metal film pattern constituting, for example, an electrical interconnection, is deposited on the surface by applying a selective chemical vapor deposition process using a metal halide gas.
摘要:
According to this invention, there is disclosed a method of manufacturing a silicon nitride film on a semiconductor substrate using a low-pressure CVD apparatus, including the steps of setting a plurality of semiconductor wafers in a boat in a reaction furnace, increasing a temperature in the reaction tube to a predetermined temperature and decreasing a pressure in the reaction tube to a predetermined pressure, and supplying Si(N(CH.sub.3).sub.2).sub.4 gas from a first gas source to the reaction tube and supplying NH.sub.3 gas from a second gas source to the reaction tube.
摘要:
A method for forming a refractory metal film on a substrate utilizes a reduction reaction of the halides of the refractory metal with respect to monosilane, disilane, or the halides of monosilane and disilane to form the refractory metal film while suppressing the reaction by adding a hydrogen gas. As a result, the refractory metal film is formed with good quality at a high speed, or deposited selectively on the nitrides, etc., of metal.
摘要:
A non-monocrystalline semiconductor layer which contains predetermined impurities is disposed on a semiconductor substrate. Then, on this semiconductor layer an oxide layer is formed which contains the same type impurities as in the semiconductor layer. The device is then heated at a high temperature, thus causing the impurities to diffuse into the semiconductor substrate and form impurity diffused regions. Suitable electrodes are deposited on the impurity diffused regions.