Abstract

A semiempirical model for carrier mobility in silicon inversion layers is presented. The model, strongly oriented to CAD (computer-aided design) applications, is suitable for two-dimensional numerical simulations of nonplanar devices. A local mobility function, set up in terms of a simple Mattiessen's rule, provides a careful description of MOSFET operation in a wide range of normal (or gate) electric fields, channel impurity concentrations of between 5*10/sup 14/ cm/sup -3/ and 10/sup 17/ cm/sup -3/ for the acceptor density of states and 6*10/sup 14/ cm/sup -3/ and 3*10/sup 17/ cm/sup -3/ for the donor density of states; and temperatures between 200 K and 460 K. Best-fit model parameters are extracted by comparing the calculated drain conductance with a very large set of experimental data points.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

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