Modelling and simulations for 40nm lines/spaces in 1?m Shipley SPR510A resist using PRIME process
The Positive Resist IMage by dry Etching (PRIME) process is a high resolution positive resist lithography system incorporating electron beam exposure, silylation (gas/liquid phase), and dry development. In this paper, software has been developed and presented for the modelling and simulation of nanostructures patterned in the PRIME process. The simulation of the electron beam exposure, near ultraviolet flood exposure, post-exposure bake, silylation and dry development process steps have been shown. The electron beam exposure and the absorbed energy density profiles through the resist depth has been simulated using the commercially available lithographic simulator SAMPLE, with source code modifications to include the resist system Shipley SRP510A. In this work, a 40nm line/space grating in 1?m thick Shipley SPR510A resist has been successfully modelled, thus showing the feasibility of this software for modelling and simulation of nanostructures by the PRIME process.
prime process silylation dry development lithography modelling nanolithograpgy