| abstract |
The present invention is directed to photoresist cross-linkers selected from the group consisting of a cross-linker monomer represented by following Chemical Formula 1, and homopolymers and copolymers thereof. Such cross-linkers are suitable for use in photolithography processes employing KrF(248nm), ArF(193nm), E-beam, ion-beam or EUV light sources.whereinX1 and X2 individually represent CH2, CH2CH2, O or S; p and s individually represent an integer from 0 to 5; q is 0 or 1; R' and R'' independently represent hydrogen or methyl; R represents straight or branched C1-10 alkyl, straight or branched C1-10 ether, straight or branched C1-10 ester, straight or branched C1-10 ketone, straight or branched C1-10 carboxylic acid, straight or branched C1-10 acetal, straight or branched C1-10 alkyl including at least one hydroxyl group, straight or branched C1-10 ether including at least one hydroxyl group, straight or branched C1-10 ester including at least one hydroxyl group, straight or branched C1-10 ketone including at least one hydroxyl group, straight or branched C1-10 carboxylic acid including at least one hydroxyl group, and straight or branched C1-10 acetal including at least one hydroxyl group; R1 and R2 independently represent hydrogen, straight or branched C1-10 alkyl, straight or branched C1-10 ester, straight or branched C1-10 ketone, straight or branched C1-10 carboxylic acid, straight or branched C1-10 acetal, straight or branched C1-10 alkyl including at least one hydroxyl group, straight or branched C1-10 ester including at least one hydroxyl group, straight or branched C1-10 ketone including at least one hydroxyl group, straight or branched C1-10 carboxylic acid including at least one hydroxyl group, and straight or branched C1-10 acetal including at least one hydroxyl group. |