Patent ID: 6022586
Filing Date: 2000-02-08
Classification: C23C

Abstract:
A method of forming laminated layers, comprising the steps of:(A) forming pre-coating films in a pretreatment by supplying a first series of film-forming gases into a process chamber while heating said process chamber so as to form a first pre-coating film consisting essentially of polycrystalline silicon doped with phosphorus on an inner surface of said process chamber, followed by supplying a second series of film-forming gases into the process chamber to form a second pre-coating film consisting essentially of tungsten silicide on said first pre-coating film;(B) loading an object to be processed into the process chamber;(C) supplying the first series of gases into the process chamber while heating the process chamber so as to form a first layer consisting essentially of polycrystalline silicon doped with phosphorus on said object, followed by supplying the second series of gases into the process chamber so as to form a second layer consisting essentially of tungsten silicide on said first layer;(D) supplying a silane-series gas into the process chamber to permit silicon material to be deposited on the second layer stacked on the first layer; and(E) unloading the object having the first and second layers formed thereon out of the process vessel.