Monte Carlo simulation on line edge roughness after development in chemically amplified resist of post-optical lithography

被引:4
|
作者
Saeki, Akinori [1 ]
Kozawa, Takahiro [1 ]
Tagawa, Seiichi [1 ]
Cao, Heidi B. [2 ]
Deng, Hai [2 ]
Leeson, Michael J. [2 ]
机构
[1] Osaka Univ, Inst Sci & Ind Res, 8-1 Mihogaoka, Osaka 5670047, Japan
[2] Intel Corp, Hillsboro, OR 97124 USA
关键词
line edge roughness; Monte Carlo simulation; chemically amplified resist; development process;
D O I
10.1117/12.772174
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
It is well-known that line edge roughness (LER) of patterned features in chemically amplified (CA) resists is formed in the acid generation stage and expected to be moderated by the acid diffusion and development process. To provide an insight into the limit of LER is essential for the realization of next-generation lithographies such as electron beam or extreme ultraviolet. Based on the results of Monte Carlo simulation which reproduces dynamics of chemical intermediates in positive-tone CA resist, we discuss the possibility of low LER (high frequency) after development. It is found that low LER is achievable; however, the process condition is still strict.
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页数:6
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