Analytical modeling of high performance single-walled carbon nanotube field-effect-transistor
We present a novel analytical modeling of a zigzag single-walled semiconducting carbon nanotube field effect transistor (CNFET) by incorporating quasi-one-dimensional (Q1D) top-of-a-potential barrier approach. By implementing multimode carrier transport, we explore and compare the performance of a low- (360cm2/Vs) and high-mobility (7200cm2/Vs) CNFET model with experimental data from nanotube and 45nm MOSFET, respectively, as well as existing compact models. Mobility and carrier concentration models are also developed to obtain a good matching with physical data. For a high mobility CNFET, we found that a maximum of 120?A is obtained. In addition to this, a CNT-based inverter is also developed by constructing n-type and p-type CNFET in ORCADs analog behavioral model (ABM). A gain of as high as 5.2 is forecasted for an inverter of 80nm CNFET.
carbon nanotube high mobility inverter 80nm cnfet analytical device modeling low mobility spice