Title :
DC and small-signal numerical simulation of graphene base transistor for terahertz operation
Author :
Di Lecce, Valerio ; Grassi, Roberto ; Gnudi, A. ; Gnani, Elena ; Reggiani, S. ; Baccarani, G.
Author_Institution :
E. De Castro Adv. Res. Center on Electron. Syst. (ARCES), Univ. of Bologna, Bologna, Italy
Abstract :
The working principles of the hot-electron graphene base transistor (GBT) for analog terahertz operation have been investigated by means of a self-consistent Schrodinger-Polsson solver code. Its regions of operation are defined and discussed. With the help of a small-signal model, it is shown that the cutoff frequency does not depend on the quantum capacitance of the graphene layer, which on the contrary severely affects the intrinsic voltage gain, and that terahertz operation is possible.
Keywords :
Poisson equation; Schrodinger equation; graphene; numerical analysis; transistors; DC-signal numerical simulation; GBT; Schrodinger-Poisson solver code; analog terahertz operation; hot-electron graphene base transistor; intrinsic voltage gain; quantum capacitance; small-signal numerical simulation; Cutoff frequency; Electric potential; Graphene; Numerical models; Quantum capacitance; Transistors;
Conference_Titel :
Solid-State Device Research Conference (ESSDERC), 2013 Proceedings of the European
Conference_Location :
Bucharest
DOI :
10.1109/ESSDERC.2013.6818881
