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EUV lithography

Lithography gets extreme

Extreme ultraviolet lithography extends photolithography to much shorter wavelengths and is a cost-effective method of producing more-advanced integrated circuits. Although some infrastructure challenges still remain, this technology is expected to begin high-volume microchip production within the next three years.

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Figure 1: Since the mid-1980s, the wavelength of light used in lithography systems has reduced by almost half from 365 nm to 193 nm.

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Figure 2
Figure 3: EUV sources for lithography applications based on laser- (left) or discharge-produced (right) plasmas of tin.

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Acknowledgements

The authors would like to thank David Brandt of Cymer and Hans Meiling of ASML for their help in creating this article.

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Correspondence to Christian Wagner.

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Wagner, C., Harned, N. Lithography gets extreme. Nature Photon 4, 24–26 (2010). https://doi.org/10.1038/nphoton.2009.251

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