Patent ID: 6228752
Filing Date: 2001-05-08
Classification: H01L,Y10S

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:forming a conductive layer containing a refractory metal layer, on a semiconductor substrate;heat-processing the semiconductor substrate having the conductive layer, in an atmosphere containing water vapor and hydrogen;wherein the heat-processing step is carried out while controlling a vapor pressure of a refractory metal oxo-acid generated on a surface of the refractory metal layer; andwherein the vapor pressure of the refractory metal oxo-acid is controlled by adjusting at least one parameter selected from the group consisting of a ratio between a partial pressure of water vapor and a partial pressure of hydrogen, a temperature of the substrate, and a gas flow, wherein the vapor pressure of the refractory metal oxo-acid is controlled to be 1.times.10.sup.-6 or less.