Patent ID: 7759249
Filing Date: 2010-07-20
Classification: G03F,H01J,H01L

Abstract:
1. A method of removing residue from a substrate, comprising: disposing said substrate, having said residue thereon, on a pedestal in a process chamber; introducing a process gas to a remote radical generation chamber coupled to said process chamber, said process gas comprising N forming radicals of said process gas in said remote radical generation chamber; transporting said radicals from said remote radical generation chamber through a duct outlet provided in a wall of said process chamber that is directly opposing the pedestal such that the radicals are introduced to a process space between the duct outlet and pedestal while providing an unobstructed flow of radicals and inhibiting recombination of the radicals prior to reaching the pedestal; distributing the radicals above the substrate such that a treatment rate of the substrate is controlled while maintaining a minimal impedance to the flow of radicals that corresponds to the unobstructed flow; and exposing said substrate to said radicals, wherein said transporting comprises transporting the radicals to the process chamber at a high conductance in excess of about 50 liters/second.