Influence of the biomaterial thickness in a dielectrically charged modulated fringing field bio-tunnel-FET device
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2020-04-01
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MacAmbira, Christian Nemeth
Agopian, Paula Ghedini Der [UNESP]
Martino, Joao Antonio
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In this paper the influence of the biomaterial thickness (tBio) in a dielectrically charged modulated fringing field Bio-Tunnel FET is studied using TCAD simulation. The sensitivity of the biosensor TFET is observed in the ambipolar current region due to the variation of the dielectric permittivity and/or the presence of charges into the biomaterial. The results show that when tBioincreases from 10 nm to 30 nm, the sensitivity increases up to 2 orders of magnitude. The presence of positive fixed charges into the biomaterial also increases the sensitivity more than 1 order of magnitude in the studied charge magnitude range.
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ECS Transactions, v. 97, n. 5, p. 109-114, 2020.