RF Performance and Small-Signal Parameter Extraction of Junctionless Silicon Nanowire MOSFETs

This paper presents a radio-frequency (RF) model and extracted model parameters for junctionless silicon nanowire (JLSNW) metal-oxide-semiconductor field-effect transistors (MOSFETs) using a 3-D device simulator. JLSNW MOSFETs are evaluated for various RF parameters such as cutoff frequency fT, gate input capacitance, distributed channel resistances, transport time delay, and capacitance by the drain-induced barrier lowering effect. Direct comparisons of high-frequency performances and extracted parameters are made with conventional silicon nanowire MOSFETs. A non-quasi-static RF model has been used, along with SPICE to simulate JLSNW MOSFETs with RF parameters extracted from 3-D-simulated Y-parameters. The results show excellent agreements with the 3-D-simulated results up to the high frequency of fT.