Patent ID: 6348402
Filing Date: 2002-02-19
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising:forming one of a groove and a hole in an insulating layer formed on a semiconductor substrate; forming a first conductive layer including at least a first metal element on a surface of the insulating layer; forming an oxide layer of the first metal element on a surface of the first conductive layer by exposing the first conductive layer to an oxidizing atmosphere; depositing on a surface of the oxide layer of the first metal element a second conductive layer including at least a second metal element having a free energy of oxide formation lower than that of the first metal element; forming an oxide layer of the second metal element at an interface between the first conductive layer and the second conductive layer by reducing the oxide layer of the first metal element by the second metal element; and burying an interconnection in the one of the groove and the hole in the insulating layer.