Patterning of Si nanowire array with electron beam lithography for sub-22nm Si nanoelectronics technology
Strong inter-pattern repulsion is seen while forming Si-nanowires with EBL and RIE. The collapse of RIE dummies is prevented to overcome the patterning limit. Placing sacrificial patterns with a fixed inter-pattern space prevents the collapse. By forming thinner resist film, Si-wires narrower than 20nm are successfully formed.
electron beam lithography lithography/etching interaction inter-pattern electrostatic repulsion nanowire patterning hydrogen silsesquioxane (hsq) diluted electron beam resist