Gate capacitance of back-gated nanowire field-effect transistors
arXiv:cond-mat/0607379 · doi:10.1063/1.2337853
Abstract
Gate capacitances of back-gated nanowire field-effect transistors (NW-FETs) are calculated by means of finite element methods and the results are compared with analytical results of the ``metallic cylinder on an infinite metal plate model''. Completely embedded and non-embedded NW-FETs are considered. It is shown that the use of the analytical expressions also for non-embedded NW-FETs gives carrier mobilities that are nearly two times too small. Furthermore, the electric field amplification of non-embedded NW-FETs and the influence of the cross-section shape of the nanowires are discussed.
4 pages, 5 figures, to be published in Appl. Phys. Lett
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