Patent ID: 9034743
Filing Date: 2015-05-19
Classification: H01J,H01L

Abstract:
1. A method of processing a workpiece, comprising: introducing a conditioning gas into a chamber of an ion source, said conditioning gas comprising a hydride containing a desired dopant species, and a conditioning co-gas, where said conditioning co-gas comprises a noble gas, a hydride of a Group 4 element, or a hydride of a species having an opposite conductivity of said desired dopant species, where between 10% and 40% of a total volume of gas introduced comprises said conditioning co-gas; ionizing said conditioning gas and said conditioning co-gas in said chamber so as to form a coating on walls of said chamber; changing gases introduced into said chamber after said coating is formed and introducing a feedgas into said chamber, said feedgas comprising fluorine and said desired dopant species; ionizing said feedgas in said chamber to create ions; and extracting said ions from said chamber and accelerating said ions toward said workpiece, such that said ions are implanted into said workpiece without mass analysis.