KEYWORDS: Polymers, Extreme ultraviolet lithography, Extreme ultraviolet, Electron beam lithography, Design and modelling, Tin, Scanning electron microscopy, Internet of things, Electron beams
Since 2019, the extreme ultraviolet lithography (EUVL) has been applied to the high-volume production of devices. For further scaling, high-numerical aperture (NA) tool and resist materials applicable to high-NA EUVL are required. However, there are no resists applicable to high-NA EUVL. These days, resist materials containing Sn whose EUV absorption cross section is particularly high are attracting much attention. In this research, radiation-induced reaction mechanisms of Sncomplex- side-chain polymers were investigated to obtain the guidelines of material design.
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