High-energy electron beam lithography process simulation

摘要

In this paper, we present the model of electron beam lithography. This model includes elastic cross section, inelastic cross section, energy-loss rate model and etch rate model. For elastic cross section, Rutherford cross section and Browning's Mott cross section are adopted. For inelastic cross section, Moller cross section and Gryzinsky cross section are used. To calculate energy-loss rate, we use different forms of Bethe formulas. The etch rate model is used to calculate the etch rate. The simulation is implemented with Monte Carlo method for PMMA resist. Various development profiles are obtained through the simulation.