Patent ID: 6429493
Filing Date: 2002-08-06
Classification: H01L

Abstract:
A semiconductor device comprising:a substrate having a device element; an interlayer dielectric layer formed on the semiconductor substrate; a though hole formed in the interlayer dielectric layer; and a barrier layer formed from a metal, the barrier layer being formed on surfaces of the interlayer dielectric layer and the through hole, wherein the barrier layer includes at least one metal oxide layer formed from an oxide of the metal that forms the barrier layer, and at least one metal nitride layer formed from a nitride of the metal that forms the barrier layer, wherein the at least one metal oxide layer includes a first metal oxide layer formed from an oxide of the metal that forms the barrier layer and a second metal oxide layer formed from the oxide of the metal that forms the barrier layer, the at least one metal nitride layer formed between the first metal oxide layer and the second metal oxide layer.