Patent ID: 8084193

Claim:
A method of forming a patterned material layer on a substrate, said method comprising: (a) providing a substrate; (b) forming a layer of a self-segregating polymeric composition on said substrate, where said self-segregating polymeric composition comprises; i. a polymeric photoresistive material comprising a positive working photoresist or a negative working photoresist, ii. a polymeric BARC material, iii. an optional radiation-sensitive acid generator and, iv. an optional base quencher, to form a coated substrate comprising a uniaxial bilayer polymer coating on and substantially parallel to said substrate, said uniaxial bilayer polymer coating undergoing a phase separation that is oriented in a direction orthogonal to said substrate, said coated substrate thereby including a top photoresistive coating layer and a bottom antireflective coating layer; (c) optionally, forming a layer comprising a top coat material on said uniaxial bilayer; (d) pattern-wise exposing said coated substrate to imaging radiation to form a patterned area comprising exposed areas and unexposed areas, and optionally an area not covered by a pattern; (e) optionally, baking the exposed substrate; and (f) contacting said coated substrate with a developer; wherein said antireflective coating comprises a silicon polymer having the general structure: where (SiO 1.5 ) comprises a polysilsesquioxane polymer backbone, R 1 and R 2 independently comprise a linear, branched, or cyclic alkylene group of 1 to about 10 carbons, A is either hydrogen, methoxy-, ethoxy or other alkoxy-, halogen or an ester group, B is hydroxy-, carboxy or a carboxamido-group and is independently located in the 2-, 3- or 4-positions of the benzene ring, C is a nonaromatic moiety comprising: where D and E independently are hydrogen, hydroxy-, acetoxy-groups, alkylalkoxy- or alkylacetoxy-groups or D and E can form a cyclic epoxide, the molar fractions x, y and z independently represent a value from 0 to about 0.8 and the sum of x, y and z equals 1 or wherein said antireflective coating comprises an amide polymer having a general structure: where R 3 is a linear, branched, or cyclic alkylene group of 1 to about 10 carbons, G is hydrogen, hydroxy-, acetoxy-, methoxy-, ethoxy- or other alkoxy-, halogen, ester, carboxy- or a carboxamido-group, J is alkyl, alkoxy-, or up to about 6 carbon atom carboalkoxy or alkoxycarbonyl esters, lactone or anhydride moieties, the molar fractions x, y and z independently are from 0 to about 0.5 and the sum of x, y and z equals 1, and the amide group is an organic amidic group: where R can be methyl, ethyl, phenyl or vinyl and R′ and R″ can be independently hydrogen, alkyl, or an aryl group.