Patent ID: 8969196
Filing Date: 2015-03-03
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising: forming an insulation layer including an opening on a substrate on which a plurality of lower conductive structures are formed; forming a barrier layer on a sidewall and a bottom of the opening of the insulation layer, wherein the barrier layer includes boron at a concentration that decreases from a first surface contacting the sidewall and the bottom of the opening to a second surface opposite to the first surface; forming an interconnection on the barrier layer in the opening, wherein the interconnection is electrically connected to one of the plurality of lower conductive structures; and forming an upper conductive structure on the insulation layer, wherein the upper conductive structure is electrically connected to the interconnection to electrically connect the upper conductive structure to the one of the plurality of lower conductive structures through the interconnection.