Patent ID: 8293328
Filing Date: 2012-10-23
Classification: C23C,H01L

Abstract:
1. A method for processing a substrate, comprising: precleaning a dielectric layer on a substrate; positioning the substrate in a chamber, the chamber having a chamber lid having an expanding channel, a bottom surface coupled with the expanding channel, and one or more gas conduits coupled with the expanding channel, wherein each of the one or more gas conduits is connected to a sidewall of the expanding channel and is positioned in a non-linear manner with respect to a center of the expanding channel and to other gas conduits to introduce a process gas into the expanding channel in a vortex, helix, or spiral flow pattern, and wherein the bottom surface is tapered from the expanding channel to a peripheral portion of the chamber lid and is sized and shaped to substantially cover the substrate; forming a barrier layer on the substrate by flowing the process gas into the expanding channel in a manner to form the vortex, helix, or spiral flow pattern which provides a sweeping action across an inner surface of the expanding channel, the vortex, helix, or spiral flow pattern being dissipated while traveling through the expanding channel to a downwardly gas flow toward and across a surface of the substrate in a laminar manner, and sequentially pulsing reagents into the gas during an atomic layer deposition, wherein the atomic layer deposition comprises introducing one or more pulses of a metal-containing precursor and a nitrogen-containing precursor to the expanding channel; and depositing a seed layer on the barrier layer.