Patent ID: 9637823
Date: 2017-05-02
CPC Classifications: C23C,H01L

Claim:
1. A method of depositing a layer of dielectric SiN by plasma atomic layer deposition, the method comprising: providing a substrate in a reaction space; in a first phase, contacting the substrate with a silicon precursor to adsorb an adsorbed species of the silicon precursor on the substrate; and in a second phase, contacting the substrate with excited nitrogen species to react with the adsorbed species, wherein the excited nitrogen species is supplied to or formed in the reaction space for greater than about 0.1 s, and wherein the amount of reactive species in the reaction space is reduced by at least 63.2% in an average time of less than about 1.0 s during the second phase, and wherein the first phase and the second phase are cyclically repeated to form more than a monolayer of dielectric SiN.