Date of Award

5-2015

Document Type

Honors Thesis

Degree Name

Bachelor of Science

Department

Nanoscale Science

First Advisor

Robert Brainard

Abstract

We have developed organometallic carboxylate compounds [RnM(O2CR’)2] capable of acting as negative-tone EUV resists. Overall, the best and fastest resists contain antimony, are pentavalent and the carboxylate group contains a polymerizable olefin (e.g. acrylate, methacrylate or styrenecarboxylate). Evidence suggests that high sensitivity is achieved through the polymerization of olefins in the exposed region. We have performed a systematic sensitivity study of molecules of the type RnM(O2CR’)2 where we have studied seven R groups, four main group metals (M), and three polymerizable carboxylate groups (O2CR’). We found that the greatest predictor of sensitivity of the RnSb(O2CR’)2 resists is their level of polymerizable olefins. We mathematically define the polymerizable olefin loading (POL) as the ratio of the number of olefins vs. the number of non-hydrogen atoms. Linear and log plots of Emax vs. POL for a variety of molecules of the type R3Sb(O2CR’)2 lend insight into the behavior of these resists.

Share

COinS