Patent ID: 8716079
Filing Date: 2014-05-06
Classification: H01L

Abstract:
1. A method, comprising: forming an opening in a gate electrode structure of a transistor by removing a placeholder electrode material of said gate electrode structure, said opening having an initial width and substantially vertically oriented sidewalls; forming a metal-containing material layer having an initial thickness on an entirety of said substantially vertically oriented sidewalls and above a bottom of said opening, said metal-containing material layer reducing said initial width of said opening to a reduced width; filling said opening with a sacrificial material so as to cover at least a portion of said metal-containing material layer positioned above said bottom; reducing said initial thickness of said metal-containing material layer so as to increase said reduced width of said opening at a top area thereof in the presence of at least a portion of said sacrificial material while leaving said metal-containing layer covering substantially the entirety of said substantially vertically oriented sidewalls of said opening; removing said sacrificial material from said opening; and filling said opening with a conductive electrode material.