Abstract:
PROBLEM TO BE SOLVED: To provide novel, wet developable anti-reflective coating compositions; and to provide methods of using those compositions.SOLUTION: The compositions comprise a polymer and/or oligomer having acid functional groups and dissolved in a solvent system along with a crosslinker and a photoacid generator. The acid functional group is a carboxylic acid, while the crosslinker is a vinyl ether crosslinker. In use, the compositions are applied to a substrate and thermally crosslinked. Upon exposure to light, the cured compositions will decrosslink, rendering them soluble in typical photoresist developing solutions (e.g., alkaline developers).
Abstract:
Verfahren zum Bilden einer mikroelektronischen Struktur, bei dem (a) ein Substrat mit einer Oberfläche bereitgestellt wird, (b) gegebenenfalls eine oder mehrere Zwischenschichten auf der Oberfläche gebildet werden, (c) eine Hartmaskenzusammensetzung angrenzend an die Zwischenschichten, falls vorhanden, oder angrenzend an die Substratoberfläche, falls keine Zwischenschichten vorhanden sind, aufgebracht wird, wobei die Hartmaskenzusammensetzung nichtpolymere Nanopartikel enthält, die in einem Lösungsmittelsystem gelöst oder dispergiert sind, (d) die Hartmaskenzusammensetzung gebacken wird, um eine Hartmaskenschicht zu ergeben, (e) die Hartmaskenschicht Strahlung ausgesetzt wird, um einen bestrahlten Teil der Hartmaske zu erhalten und (f) die Hartmaskenschicht mit einem Entwickler in Kontakt gebracht wird, um so den bestrahlten Teil der Hartmaskenschicht zu entfernen.
Abstract:
Anti-reflective coating compositions having improved etch rate, inter alia, are prepared from certain high molecular weight polymers and copolymers, particularly glycidyl methacrylate with grafted dyes.
Abstract:
Anti-reflective coating compositions having improved etchrate, inter alia, are prepared from certain high molecular weight polymers and copolymers, particularly glycidyl methacrylate.
Abstract:
Novel, developer-soluble anti-reflective coating compositions and methods of using those compositions are provided. The compositions comprise a multi-functional acid reacted with a multi-functional vinyl ether to form a branched polymer or oligomer. In use, the compositions are applied to a substrate and thermally crosslinked. Upon exposure to light and post-exposure baking, the cured polymers/oligomers will decrosslink and depolymerize, rendering the layer soluble in typical photoresist developing solutions (e.g., alkaline developers).
Abstract:
Novel double- and triple-patterning methods are provided. The methods involve applying a shrinkable composition to a patterned template structure (e.g., a structure having lines) and heating the composition. The shrinkable composition is selected to possess properties that will cause it to shrink during heating, thus forming a conformal layer over the patterned template structure. The layer is then etched to leave behind pre-spacer structures, which comprise the features from the pattern with remnants of the shrinkable composition adjacent the feature sidewalls. The features are removed, leaving behind a doubled pattern. In an alternative embodiment, an extra etch step can be carried out prior to formation of the features on the template structure, thus allowing the pattern to be tripled rather than doubled.
Abstract:
New hardmask compositions comprising non-polymeric, metal-conlaining nanoparticles dispersed or dissolved in a solvent system and methods of using those compositions as hardmask lavcrs in microelectronic structures are provided. The compositions arc photosensitive and capable of being rendered developer soluble upon exposure to radiation. The inventive hardmask layer is patterned simultaneously with the photoresist layer and provides plasma etch resistance for subsequent pattern transfer.