Patent ID: 6930058
Filing Date: 2005-08-16
Classification: C23C,H01L

Abstract:
1. A method of depositing a silicon dioxide comprising layer doped with at least one of P, B, and Ge, comprising: positioning a substrate within a deposition chamber; and feeding at least two gaseous precursors to the chamber collectively comprising silicon, an oxidizer comprising oxygen and the at least one of P, B, and Ge dopant which become part of the deposited doped silicon dioxide, said feeding being over at least two different time periods and under conditions effective to deposit a doped silicon dioxide layer on the substrate, the time periods and conditions being characterized by some period of time when one of said gaseous precursors comprising said dopant is flowed to the chamber in the substantial absence of flowing any of said oxidizer precursor, the time periods and conditions being effective to at least initially deposit a greater quantity of doped silicon dioxide within at least some gaps on the substrate as compared to any doped silicon dioxide deposited atop substrate structure which define said gaps.