High-quality single-walled carbon nanotubes with small diameter, controlled density, and ordered locations using a polyferrocenylsilane block copolymer catalyst precursor
Iron-containing nanostructures for single-walled carbon nanotube (SWNT) growth were prepared from spin-coated films of polystyrene-b-polyferrocenysilane (PS-PFEMS) diblock copolymer catalyst precursor. For patterned carbon nanotube growth, a bilayer lift-off process was used to generate patterned catalyst surfaces. It was demonstrated that iron clusters prepared from PS-PFEMS diblock polymer are very effective catalysts for SWNT growth. It was concluded that the process can be readily integrated into semiconductor device fabrication and extended to any wafer format for spatially selective growth of SWNTs.
Lu, JQ; Kopley, TE; Moll, N; Roitman, D; Chamberlin, D; Fu, Q; Liu, J; Russell, TP; Rider, DA; Manners, I; Winnik, MA
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