Abstract
The impact of random dopant fluctuations (RDF) on the performance of an optimized TFET design comprising a raised germanium (Ge) source region is investigated via 3-D TCAD simulation. The RDF within the source region results in degraded subthreshold swing and lower turn-on voltage for the raised-Ge-source TFET design. In addition, drain-induced barrier tunneling is mitigated with the raised source design. An optimized raised-Ge-source TFET is projected to provide for lower energy operation at frequencies up to 500 MHz when compared with an ideal MOSFET.
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