Sulfonium-Functionalized Polystyrene-Based Nonchemically Amplified Resists Enabling Sub-13 nm Nanolithography

Zhihao Wang, Tianjun Yu, Yi Zeng, Xudong Guo, Shuangqing Wang, Timothée Allenet, Michaela Vockenhuber, Yasin Ekinci, Guoqiang Yang, Yi Li

ACS Applied Materials & Interfaces · 2022 · 43 citations · 36 references

Concepts

Abstract

with a line edge roughness of 2.8 nm was achieved. Our detailed study of the reaction and patterning mechanism suggests that the decomposition of the polar triflate and triphenyl sulfonium groups into nonpolar sulfide or polystyrene plays an important role in the solubility switch.

References

36