Studies of the molecular mechanism of dissolution inhibition of positive photoresists based on novolac-DNQ

Abstract

effects in the development process. A comprehensive theory ofdissolution inhibition in novolak-DNQ (diazonaphthoquinone) resist is proposed, which is based on experimental studies of novolak-PAC (photoactive compound) interactions and the relationship between novolak microstructres and dissolution inhibition. The theory invokes a "two-step mechanism". Static molecular interactions between novolak and DNQ are augmented by secondary dynamic