Patent ID: 7842606
Filing Date: 2010-11-30
Classification: G03F,H01L,Y10S

Abstract:
1. A method of depositing a thin film on a semiconductor substrate, the method of comprising: (a) depositing a carbon anti-reflective film on a bottom film of the semiconductor substrate while applying both RF power and MF power to the substrate; and (b) adding a compound containing nitrogen (N), fluorine (F) or silicon (Si) for at least two limited periods of time to deposit at least two thin films of a-C:N, a-C:F or a-C:Si to at least two of a bottom surface, an inner portion, and a top surface of the carbon anti-reflective film, wherein the at least two thin films have high selectivity and are deposited to thicknesses of 1 to 100 nm using an atomic layer deposition process, wherein the at least two limited periods of time are non-contiguous in time such that a layer of carbon anti-reflective film is deposited between the at least two thin films, and wherein the adding step (b) occurs while the depositing step (a) occurs such that both the adding step (b) and the depositing step (a) simultaneously occur during the at least two limited periods of time.