Patent ID: 6040021
Filing Date: 2000-03-21
Classification: C23C

Abstract:
A plasma CVD process for forming a metal film on a substrate to be processed using a source gas containing a metal halide gas, hydrogen gas, and a noble gas, said process comprising the steps of:reducing the metal halide by activated hydrogen species in a plasma to generate neutral species of a metal;making the neutral species of the metal collide with at least one kind of activated species of the noble gas and electrons in the plasma to generate metal ions;making the metal halide collide with at least one kind of the activated species of the noble gas and the electrons in the plasma to generate metal ions and neutral species of a halogen;reducing the neutral species of the halogen by the activated hydrogen species in the plasma to generate a hydrogen halide; andmaking the metal ions thus generated incident on a principal surface of the substrate to be processed in the direction substantially perpendicular to the principal surface.