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Proceedings Paper

New generation of bottom antireflective coatings (BARCs): photodefinable BARCs
Author(s): Douglas J. Guerrero; Tonya Trudgeon
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Paper Abstract

Three polymer systems, polycarbonates, polysulfonyl esters, and hybrid carbonate-sulfones, were evaluated as materials for a new generation of bottom anti-reflective coatings (BARCs). The polymers were tested for their solubility in accepted industry solvents, resistance to photoresist solvents after casting, thermal stability, and photosensitivity. From these, polysulfonyl esters show more promising properties as photodefinable BARCs than the other systems because of their good solvent solubility and resistance to photoresist solvents after casting. These polymers can be formulated in ethyl lactate (EL) or 1-methoxy-2-acetoxypropane (PGMEA) but are insoluble in the same solvents after curing above 170°C. The polysulfonyl esters were thermally stable up to ~300°C in air. The cured films were exposed with DUV light at 200 to 600 mJ/cm2. After exposure, the films can be easily removed in alkaline developer.

Paper Details

Date Published: 12 June 2003
PDF: 7 pages
Proc. SPIE 5039, Advances in Resist Technology and Processing XX, (12 June 2003); doi: 10.1117/12.483726
Show Author Affiliations
Douglas J. Guerrero, Brewer Science, Inc. (United States)
Tonya Trudgeon, Brewer Science, Inc. (United States)

Published in SPIE Proceedings Vol. 5039:
Advances in Resist Technology and Processing XX
Theodore H. Fedynyshyn, Editor(s)

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