Method of removing a silylated or germanium implanted photoresist
OwnerHyeong Soo Kim, Tai Kiyung Woninventors
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Abstract
A photoresist layer containing implanted silicon or germanium group coated on a wafer can be entirely removed from the wafer using a dry developing process using oxygen plasma by first out-diffusing or extracting the implanted silicon or germanium. Specifically, the implanted silicon- or germanium is removed from the photoresist by heating the photoresist in the same pre-silylation bake chamber used during the patterning process. Thereafter, the entire photoresist can be removed from the wafer by a dry developing process using oxygen plasma without contaminating the plasma strip equipment.
Claims6
A method of removing a silylated photoresist comprising the steps of:
- heat treating said photoresist using a pre-silylation bake chamber to out-diffuse the silicon contained within said silylated photoresist;
- and
- removing said photoresist in its entirety by a dry developing process using oxygen plasma.
A method of removing a germanium implanted photoresist comprising the steps of:
- heat treating said photoresist using a pre-silylation bake chamber to out-diffuse the germanium contained within said germanium implanted photoresist;
- and
- removing said photoresist in its entirety by a dry developing process using oxygen plasma.
Dependencies are inferred from the claim text.