Patent ID: 8282992

Claim:
A method for depositing a material on a substrate, comprising: positioning a substrate on a substrate support within a process chamber that includes a chamber body and a chamber lid comprising a thermally insulating material defining an expanding channel located at a central portion of the chamber lid, the thermally insulating material having a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid, wherein the tapered bottom surface is shaped and sized to substantially cover the substrate, and the process chamber further contains: a first conduit coupled to a first gas inlet within the expanding channel; and a second conduit coupled to a second gas inlet within the expanding channel, wherein the first conduit and the second conduit are positioned to provide a gas with a circular flow; flowing at least one carrier gas through the first and second conduits to form the circular flow; exposing the substrate to the at least one carrier gas with the circular flow; pulsing at least one precursor into the at least one carrier gas; and depositing a material containing at least one element from the at least one precursor onto the substrate.