Patent ID: 7235482
Filing Date: 2007-06-26
Classification: H01L

Abstract:
1. An atomic layer deposition (ALD) process for depositing a metal nitride layer comprised of a plurality of metal nitride monolayers on a substrate, comprising: (a) providing a substrate with a patterned layer formed thereon, the patterned layer comprising an opening; (b) loading the substrate in an ALD process chamber and adjusting the temperature and pressure in said ALD process chamber to acceptable levels; (c) flowing a nitrogen containing reactant into said ALD process chamber so that said nitrogen containing reactant is deposited on said substrate; (d) purging said ALD process chamber with an inert gas to leave a monolayer of nitrogen containing reactant on said substrate; (e) flowing a metal precursor into said ALD process chamber, said metal precursor reacts with said nitrogen containing reactant monolayer to form a metal nitride monolayer wherein the metal precursor comprises at least one of Ti{OCH(CH (f) purging said ALD process chamber to remove unreacted metal precursor; and (g) repeating the sequence of steps (c), (d), (e), (f) until the metal nitride layer fills the opening to form a metal nitride plug.