Patent ID: 6436820
Filing Date: 2002-08-20
Classification: C23C,H01L

Abstract:
A method of producing a low residual halogen content TiN layer using chemical vapor deposition, wherein the TiN layer thickness is greater than 400 Ã¥, comprising the steps of:(a) forming a layer of TiN having a thickness of less than about 400 Ã¥ by chemical vapor deposition using a halogen-comprising precursor and a nitrogen-comprising precursor, wherein said TiN layer is deposited at a rate of at least 400 Ã¥ per minute on a substrate at a process chamber pressure within the range of about 5 Torr to about 30 Torr; (b) treating said layer of TiN with at least one gas which reacts with said halogen at a pressure ranging from about 5 Torr to about 30 Torr, to produce a reaction product which is volatile under process conditions used for said treatment; and (c) repeating steps (a) and (b) to form a combined TiN layer having an overall thickness greater than about 400 Ã¥.