Patent ID: 7087119
Filing Date: 2006-08-08
Classification: C23C

Abstract:
1. An apparatus for chemically treating a surface of a workpiece comprising: a supply of an input gas; a supply of a precursor gas; a supply of a purge gas; a dispenser unit adapted to expose the surface of the workpiece to a direct flow of said precursor gas for a surface reactant formation, to provide a flow of said input gas over the workpiece in a direction away from said precursor gas, and to provide said purge gas between said precursor gas and said input gas to prevent mixing of said precursor and input gases, said dispenser unit further having a pair of evacuation ports for evacuating said purge gas; and a source having optics which converge a beam of electromagnetic radiation in said flow of said input gas in close proximity to the surface of the workpiece, but spaced a finite distance therefrom, to dissociate said input gas into a high flux of generated reactive gas species that reacts with said surface reactant to chemically treat said surface of said workpiece.