A CERAMIC COMPOSITION FOR AN APPARATUS AND METHOD FOR PROCESSING A SUBSTRATE

摘要

A ceramic composition of matter for a process kit and a dielectric window of a reactor chamber wherein substrates are processed in a plasma of a processing gas. The ceramic composition of matter contains a ceramic compound (e.g. Al2O3) and an oxide of a Group IIIB metal (e.g., Y2O3). A method for processing (e.g. etching) a substrate in a chamber containing a plasma of a processing gas. The method includes passing processing power through a dielectric window which is formed from the ceramic composition of matter.