We propose a simple analytical model of the short channel effect in a
fully depleted silicon-on-insulator metaloxide-silicon field effect tr
ansistor (SOI-MOSFET). The influence sf the two-dimensional effect on
the potential distribution, the threshold voltage and the S factor are
evaluated based on the spatial distribution of the characteristic cap
acitances between the SOI body and each electrode (gate, source, drain
and substrate). This treatment makes it possible to estimate the two-
dimensional effect without solving Poisson's equation which requires a
large computation time. This model describes the short channel effect
down to the 0.1 mu m regime.