Patent ID: 9399812
Filing Date: 2016-07-26
CPC Classification: C23C,H01L

Claim Text:
1. A method of processing a substrate within a process chamber having an electrostatic chuck to support a substrate in a processing region of the process chamber and a target disposed opposite the electrostatic chuck, wherein the target comprises a target material to be deposited on the substrate, the method comprising: disposing a substrate on the electrostatic chuck; providing a process gas to the processing region; igniting a plasma in the processing region from the process gas while the substrate is disposed on the electrostatic chuck with no chucking voltage provided to clamp the substrate to the electrostatic chuck; increasing a DC power applied to the target from a plasma ignition power to a deposition power of about 10 to about 120 kW at a rate of about 2 to about 6 kW/s; depositing target material on the substrate to form a first barrier layer while no chucking voltage is provided, wherein the target material is sputtered from the target via the plasma; and pulsing only a DC chucking voltage to the electrostatic chuck to draw sputtered target material to a bottom and sidewalls of a feature to form a second barrier layer, wherein the first barrier layer and the second barrier layer comprise the same materials.