Patent ID: 8227347
Filing Date: 2012-07-24
Classification: H01L

Abstract:
1. An interconnecting structure production method, comprising: providing a substrate; forming a semiconductor layer on the substrate; forming a doped semiconductor layer on the semiconductor layer, the doped semiconductor layer containing a dopant; forming an oxide layer in a surface of the doped semiconductor layer by heating the surface of the doped semiconductor layer in atmosphere of an oxidizing gas with a water molecule contained therein; forming an alloy layer on the oxide layer, the alloy layer includes a Cu alloy layer comprising Cu and an additive element; forming an interconnecting layer on the alloy layer; and forming a diffusion barrier layer by heating the Cu alloy layer at a temperature of not less than 200° C. and not more than 300° C. to allow the additive element contained in the Cu alloy layer to be condensed.