L. Pain et al., Resolution limit of negative tone chemically amplified resist used for hybrid lithography: Influence of the molecular weight, J VAC SCI B, 18(6), 2000, pp. 3388-3395
The objective of this article was to study the resolution limits of differe
nt negative tune chemically amplified resists from both commercial and expe
rimental formulations. Process optimization has been done on all samples an
d this work underlines the importance of the choice of bake temperature to
push resists to their ultimate resolution. Furthermore, the influence of se
veral compounds, such as the polymer matrix blend, molecular weight, and ph
otoacid compound, is detailed to determine the influence of each parameter
on the final formulation performance. (C) 2000 American Vacuum Society. [S0
734-211X(00)12606-X].