@misc{10481/55341,
year = {2018},
month = {11},
url = {http://hdl.handle.net/10481/55341},
abstract = {BioFETs based on two-dimensional materials (2DMs) offer a unique opportunity to enhance, at a low cost,
the sensitivity of current biosensors enabling the design of compact devices compatible with standard
CMOS technology. The unique combination of large exposed surface areas and minimal thicknesses of
2DMs is an outstanding feature for these devices, and the assessment of their behaviour requires
combined experimental and theoretical efforts. In this work we present a 2D-material based BioFET
simulator including complex electrolyte reactions and analysing different models for the electrolyte–
molecule interaction. These models describe how the molecular charge is screened by the electrolyte
ions when their distributions are modified. The electrolyte simulation is validated against experimental
results as well as against the analytical predictions of the Debye–H¨uckel approximation. The role of the
electrolyte charge screening as well as the impact of the interaction model on the device responsivity
are analysed in detail. The results are discussed in order to conclude about the consequences of
employing different interaction approximations for the simulation of BioFETs and more generally on the
correct modelling of biomolecule-device interaction in BioFETs.},
organization = {The authors would like to thank the nancial support of
Spanish Government under project TEC2017-89955-P
(MINECO/AEI/FEDER,UE). A. Toral-Lopez, J. M. Gonzalez-
Medina and F. J. Romero acknowledge the FPU program
(FPU16/04043, FPU14/02579 and FPU16/01451). A. Toral-Lopez
also acknowledges the University of Granada funding through
the Becas de Inicaci´on a la Investigaci´on para alumnos de
M´aster. E. G. Marin gratefully acknowledges Juan de la Cierva
incorporacion IJCI-2017-32297 (MINECO/AEI).},
publisher = {Nanoscale Advances},
title = {Assessment of three electrolyte–molecule electrostatic interaction models for 2D material based BioFETs},
author = {Toral López, Alejandro and Marin, E. G. and González-Medina, Jose María and Romero, F. J. and Ruiz, F. G. and Morales Santos, Diego Pedro and Rodriguez, N. and Godoy Medina, Andrés},
}