Molecular glass resist has been considered as one of the best choices for a new generation of lithography. In this work, a new type of photoaetive compound was obtained by the esterification of tannic acid with 2-diaz...Molecular glass resist has been considered as one of the best choices for a new generation of lithography. In this work, a new type of photoaetive compound was obtained by the esterification of tannic acid with 2-diazo-1- naphthoquinone-4-sulfonyl chloride（2,1,4-DNQ-Cl） and ditertbutyl dicarbonate. The new obtained compound pos- sessed both a photosensitive group of diazonaphthoquinone sulfonate（2,1,4-DNQ） and a group of acidolytic protection. Upon the irradiation of the compound under 365 nm light, the former group was photolyzed and converted into indene carboxylic acid along with a small amount of sulfonic acid, which could lead to the deprotection of the latter group. As a result, a novel i-line molecular glass photoresist was formed with the chemical modification of tannic acid. The expe- rimental results show that the modificated compound had a fair solubility in many organic solvents. The lithographic performance of the resist was evaluated on an i-line exposure system with high photosensitivity and resolution as well.展开更多
文摘Molecular glass resist has been considered as one of the best choices for a new generation of lithography. In this work, a new type of photoaetive compound was obtained by the esterification of tannic acid with 2-diazo-1- naphthoquinone-4-sulfonyl chloride（2,1,4-DNQ-Cl） and ditertbutyl dicarbonate. The new obtained compound pos- sessed both a photosensitive group of diazonaphthoquinone sulfonate（2,1,4-DNQ） and a group of acidolytic protection. Upon the irradiation of the compound under 365 nm light, the former group was photolyzed and converted into indene carboxylic acid along with a small amount of sulfonic acid, which could lead to the deprotection of the latter group. As a result, a novel i-line molecular glass photoresist was formed with the chemical modification of tannic acid. The expe- rimental results show that the modificated compound had a fair solubility in many organic solvents. The lithographic performance of the resist was evaluated on an i-line exposure system with high photosensitivity and resolution as well.
