October 21, 2021

CHICAGO PIXELS

SEMICONDUCTOR RESEARCH CENTER

Contrast Reduction vs. Photon Noise in EUV Lithography

The stochastic behavior of images formed in EUV lithography has already been highlighted by a number of authors [1-3]. How serious it appears depends on the pixel size with which the photons are bunched. Generally, though, for features of around 20 nm or less, even 1 nm can have at least a +/- 15% gradient across it, which is still a

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