ELECTROLESS PLATING METHOD

摘要

This invention provides an electroless plating method comprising electrolessly plating the surface of a metal base sample using a supercritical fluid or a subcritical fluid in such a state that a metal powder is dispersed in an electroless plating liquid. According to this method, a homogeneous and thick plating layer is formed in a short time by taking advantage of an induction eutectoid phenomenon. In the electroless plating method, the metal powder may have an average particle diameter of not less than 1 nm and not more than 100 &mgr;m, and the electroless plating method may also be applied to a damascene process or a dual damascene process which is a method for forming a fine metal wiring within a semiconductor element. The above constitution can provide an electroless plating method which can realize the formation of an even film by electroless plating in a short time using a subcritical fluid or a supercritical fluid by taking advantage of an induction eutectoid phenomenon.