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Immersion BARC

Photonics Spectra
Jul 2010
Brewer Science Inc.Request Info
 
Brewer Science has launched the ARC29L coating, a state-of-the-art argon-fluoride immersion bottom antireflection coating (BARC) that provides broad photoresist compatibility and tuned optical properties for use as a top layer in a dual-layer BARC stack or as a single layer BARC on SiON. The coating is based on the proprietary ARC29SR coating platform and provides low substrate reflectivities of less than 0.1% for film thicknesses of less than 40 nm. It is suitable for extending leading-edge immersion processes in both single- and double-patterning lithography schemes. Its low thermal conductivity value delivers improved reflectivity control on absorbing substrates such as TiN and SiN.


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GLOSSARY
optical
Pertaining to optics and the phenomena of light.
photoresist
A chemical substance rendered insoluble by exposure to light. By means of a photoresist, a selected pattern can be imaged on a metal. The unexposed areas are washed away and are ready for etching by acid or doping to make a microcircuit.
reflectivity
The ratio of the intensity of the total radiation reflected from a surface to the total incident on that surface.
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