Why are we going from DUV straight to EUV lithography?
https://electronics.stackexchange.com/questions/425368/why-are-we-going-from-duv-straight-to-euv-lithography
WebThe problem is after 193nm materials and air are significant absorbers of UV which happens around 157nm. In addition, excimer lasers no longer work well as a source after 157nm. So if a new lithography tech requires vacuum, mirrors and a new source, you might as well do it right and jump down to 13.5nm.
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