Calculation of heat transfer and uniformity of chemical amplification during post‐exposure bake
作者:
Hiroshi Ban,
Tomoaki Sakai,
Kenichi Saito,
期刊:
Polymers for Advanced Technologies
(WILEY Available online 1994)
卷期:
Volume 5,
issue 1
页码: 22-27
ISSN:1042-7147
年代: 1994
DOI:10.1002/pat.1994.220050104
出版商: John Wiley&Sons, Ltd.
关键词: Heat transfer;chemical amplification;resist;pattern;TRUMP
数据来源: WILEY
摘要:
AbstractHeat transfer in a resist‐coated silicon wafer using a bake process is theoretically evaluated by modeling the three‐dimensional diffusion process, focusing on the controllability of the lithographic performance of chemically amplified resists. Six models of various ambient conditions are used. The proximity gap between the hotplate and the wafer is found to have a dominant influence on the heat transfer process for the whole system. Because the atmosphere near the wafer acts as a thermal diffusion buffer layer, no temperature gradient occurs in the resist, even when it is subjected to convective heat transfer from the resist surface. Experimental results obtained by X‐ray lithography confirm the calculation re
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