Patent ID: 8673787
Filing Date: 2014-03-18
Classification: H01L,Y10S

Abstract:
1. A processing method that includes etching an opening in material which is over an underlying substrate, the method comprising: forming a mask having an opening therein over material which is over an underlying substrate; forming an etching plasma with gas comprising carbon and fluorine containing molecules; etching an opening into the material through the opening in the mask with the etching plasma, a carbon chain polymer building up on sidewalls of the opening during the etching, and increasing conductivity of the carbon chain polymer during the etching by addition of a component from the etching plasma to the carbon chain polymer, the added component comprising at least one of carbon, potassium, calcium, phosphorus, boron, chlorine, and arsenic provided within the etching plasma by a gas component other than the carbon and fluorine-containing molecules; removing the mask and the carbon polymer chain buildup; and filling the opening with conductive material after the removing.