PINHOLE-FREE DIELECTRIC THIN FILM FABRICATION

摘要

A method of depositing a dielectric thin film may include: depositing a thin layer of dielectric; stopping deposition of the dielectric layer, and modifying the gas in the chamber if desired; inducing and maintaining a plasma in the vicinity of the substrate to provide ion bombardment of the deposited layer of dielectric; and repeating the depositing, stopping and inducing and maintaining steps until a desired thickness of dielectric is deposited. A variation on this method may include, in place of the repeating step: depositing a thick layer of lower quality dielectric; depositing a thin layer of high quality dielectric; stopping deposition of the dielectric layer, and modifying the gas in the chamber if desired; and inducing and maintaining a plasma in the vicinity of the substrate to provide ion bombardment of the deposited layer of dielectric. The thick layer of dielectric may be deposited more rapidly than the thin layers.