Patent ID: 9455138
Filing Date: 2016-09-27
CPC Classification: H01L

Claim Text:
1. A method for forming a dielectric film in a trench on a substrate by plasma-enhanced atomic layer deposition (PEALD) performing one or more process cycles, each process cycle comprising: (i) feeding a silicon-containing precursor in a pulse to a reaction space where the substrate is placed, said silicon-containing precursor being constituted by one or more hydrocarbon-containing compounds selected from the group consisting of: SiH (ii) supplying a hydrogen-containing reactant gas to the reaction space at a flow rate of more than about 30 sccm but less than about 800 sccm in the absence of nitrogen-containing gas; (iii) supplying a noble gas to the reaction space; and (iv) applying RF power to the reaction space in the presence of the hydrogen-containing reactant gas and the noble gas and in the absence of any precursor in the reaction space, to form a monolayer constituting a dielectric film on a substrate at a growth rate of less than one atomic layer thickness per cycle.