Robust sub-100 nm T-Gate fabrication process using multi-step development

Autor: Kaivan Karami, Aniket Dhongde, Huihua Cheng, Paul M. Reynolds, Bojja Aditya Reddy, Daniel Ritter, Chong Li, Edward Wasige, Stephen Thoms
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Micro and Nano Engineering, Vol 19, Iss , Pp 100211- (2023)
Druh dokumentu: article
ISSN: 2590-0072
DOI: 10.1016/j.mne.2023.100211
Popis: We demonstrate the fabrication of sub-100 nm T-Gate structures using a single electron beam lithography exposure and a tri-layer resist stack - PMMA/LOR/CSAR. Recent developments in modelling resist development were used to design the process, in which each resist is developed separately to optimise the resulting structure. By using a modelling approach and proximity correcting for the full resist stack, we were able to independently vary gate length (50-100 nm) and head size (250-500 nm) at the design stage and fabricate these T-Gates with high yield.
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