摘要 |
An undercoat-forming material comprising a copolymer derived from an indene and a compound having a hydroxyl or epoxy group and a double bond, an organic solvent, an acid generator, and a crosslinker, optionally combined with an intermediate layer having an antireflective effect, has an absorptivity coefficient sufficient to provide an antireflective effect at a thickness of at least 200 nm and a high etching resistance as demonstrated by slow etching rates with CF<SUB>4</SUB>/CHF<SUB>3 </SUB>and Cl<SUB>2</SUB>/BCl<SUB>3 </SUB>gases for substrate processing.
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