Tunnel field effect transistor with increased ON current, low-k spacer and high-k dielectric

Anghel, Costin; Chilagani, Prathyusha; Amara, Amara; Vladimirescu, Andrei
March 2010
Applied Physics Letters;3/22/2010, Vol. 96 Issue 12, p122104
Academic Journal
An improved double-gate tunnel field-effect transistor structure with superior performance is proposed. The originality consists in the introduction of a low-k spacer that is combined with a high-k gate dielectric. Numerical simulations demonstrate that the use of the low-k spacer and high-k gate dielectric leads to a high on-current, ION, and reduced subthreshold slope. The proposed structure increases ION by a factor of 3.8 and reduces the subthreshold slope by a factor of 2 compared to other structures described in literature.


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