This paper presents a two-dimensional analytical model of single-gate silicon-on-insulator (SOI) tunneling field-effect transistors (TFETs). Potential and electric field intensity calculated by Poisson's equation are used to extract tunneling current values. The validity of the proposed model has been confirmed by comparing the analytical results with finite-element method (FEM) results. (C) 2011 Elsevier Ltd. All rights reserved.