A two dimensional simulator has been developed for thin film submicron and deep submicron SOI MOSFET. In order to improve the calculation efficiency
the dynamic method of two steps has been used to solve Poisson’s equation and the current continuity equations for electrons and holes. The characteristics and mechanism of thin film SOI MOSFET have been discussed by means of simulation results. All of the characteristics of thin film deep submicron SOI MOSFET are more excellent than thick film SOI MOSFET. The simulation results are in agreement with experimental results.