Inhibition of Surface Insolubilization in Chemically Amplified Positive Type Deep-UV Resists
Yang SK, Park CE, Kang JH, Ahn KD
화학증폭을 이용한 원자외선용 포지티브 레지스트의 표면 불용성 억제
양승관, 박찬언, 강종희, 안광덕
Abstract
Microlithographic evaluation was done on chemically amplified positive type deep-UV resist, which is composed of novolac resin as a matrix, tert-butoxycarbonyl(t-BOC) protected phosphazene, TBP as a dissolution inhibitor and triphenylsulfonium hexafluoroantimonate, TPSHFA or mixture of TPSHFA and pyrogallol tris(methane sulfonate), PTMS as photoacid generators. Severe surface insolubilization was shown with photoresist employing TPSHFA, an onium salt, as a photoacid generator, and such problem could be largely alleviated by employing mixture of photoacid generators composed of TPSHFA and PTMS, an organic photoacid generator. It is confirmed that the photoresists employing mixture of TPSHFA and PTMS as photoacid generators show better environmental suability than those
수지를 matrix로 사용하고 tert-butoxycarbonyl(t-BOC)기로 보호된 phosphazene, TBP를 용해억제제로 사용하며 광산발생제로는 triphenylsulfonium hexafluoroantimonate,
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