A Primer on EUV Lithography

A Primer on EUV Lithography
by Fred Chen on 06-02-2023 at 6:00 am

Litho historical trend Fig 1

Extreme ultraviolet (EUV) lithography systems are the most advanced lithography systems in use today. This article is a basic primer on this important yet complex technology.

The Goal: A Smaller Wavelength

The introduction of 13.5 nm wavelength continues a trend the semiconductor industry had been following a wavelength reduction… Read More


Cautions In Using High-NA EUV

Cautions In Using High-NA EUV
by Fred Chen on 09-22-2021 at 6:00 am

Cautions In Using High NA EUV

High-NA EUV has received a lot of attention ever since Intel put the spotlight on its receiving the first 0.55 NA EUV tool from ASML [1], expected in 2025. EUV itself has numerous issues which have been enumerated by myself and others, most notoriously the stochastic defects issue. There are also a host of issues related to the propagation… Read More