An analytical model for bio-electronic organic field-effect transistor sensors

作者：Macchia Eleonora; Giordano Francesco; Magliulo Maria; Palazzo Gerardo; Torsi Luisa^*

来源：Applied Physics Letters, 2013, 103(10): 103301.

DOI：10.1063/1.4820347

A model for the electrical characteristics of Functional-Bio-Interlayer Organic Field-Effect Transistors (FBI-OFETs) electronic sensors is here proposed. Specifically, the output current-voltage characteristics of a streptavidin (SA) embedding FBI-OFET are modeled by means of the analytical equations of an enhancement mode p-channel OFET modified according to an ad hoc designed equivalent circuit that is also independently simulated with PSPICE. An excellent agreement between the model and the experimental current-voltage output characteristics has been found upon exposure to 5 nM of biotin. A good agreement is also found with the SA OFET parameters graphically extracted from the device transfer I-V curves.

• 出版日期2013-9-2