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Title: Influence of surface charge on the transport characteristics of nanowire-field effect transistors in liquid environments

Abstract

One dimensional nanowire field effect transistors (NW-FETs) are a promising platform for sensor applications. The transport characteristics of NW-FETs are strongly modified in liquid environment due to the charging of surface functional groups accompanied with protonation or deprotonation. In order to investigate the influence of surface charges and ionic concentrations on the transport characteristics of Schottky-barrier NW-FETs, we have combined the modified Poisson-Boltzmann theory with the Landauer-Büttiker transport formalism. For a typical device, the model is able to capture the reduction of the sensitivity of NW-FETs in ionic solutions due to the screening from counter ions as well as a local gating from surface functional groups. Our approach allows to model, to investigate, and to optimize realistic Schottky-barrier NW-FET devices in liquid environment.

Authors:
 [1];  [1];  [2];  [1];  [3];  [1];  [3];  [4]
  1. Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden (Germany)
  2. (Germany)
  3. (cfAED), TU Dresden, 01062 Dresden (Germany)
  4. (DCCMS), TU Dresden, 01062 Dresden (Germany)
Publication Date:
OSTI Identifier:
22402468
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHARGE TRANSPORT; FIELD EFFECT TRANSISTORS; LIQUIDS; MATHEMATICAL SOLUTIONS; NANOWIRES; SENSORS; SURFACES

Citation Formats

Nozaki, Daijiro, E-mail: daijiro.nozaki@gmail.com, E-mail: research@nano.tu-dresden.de, Kunstmann, Jens, Theoretical Chemistry, Department of Chemistry and Food Chemistry, TU Dresden, 01062 Dresden, Zörgiebel, Felix, Center for Advancing Electronics Dresden, Cuniberti, Gianaurelio, Center for Advancing Electronics Dresden, and Dresden Center for Computational Materials Science. Influence of surface charge on the transport characteristics of nanowire-field effect transistors in liquid environments. United States: N. p., 2015. Web. doi:10.1063/1.4921401.
Nozaki, Daijiro, E-mail: daijiro.nozaki@gmail.com, E-mail: research@nano.tu-dresden.de, Kunstmann, Jens, Theoretical Chemistry, Department of Chemistry and Food Chemistry, TU Dresden, 01062 Dresden, Zörgiebel, Felix, Center for Advancing Electronics Dresden, Cuniberti, Gianaurelio, Center for Advancing Electronics Dresden, & Dresden Center for Computational Materials Science. Influence of surface charge on the transport characteristics of nanowire-field effect transistors in liquid environments. United States. doi:10.1063/1.4921401.
Nozaki, Daijiro, E-mail: daijiro.nozaki@gmail.com, E-mail: research@nano.tu-dresden.de, Kunstmann, Jens, Theoretical Chemistry, Department of Chemistry and Food Chemistry, TU Dresden, 01062 Dresden, Zörgiebel, Felix, Center for Advancing Electronics Dresden, Cuniberti, Gianaurelio, Center for Advancing Electronics Dresden, and Dresden Center for Computational Materials Science. Mon . "Influence of surface charge on the transport characteristics of nanowire-field effect transistors in liquid environments". United States. doi:10.1063/1.4921401.
@article{osti_22402468,
title = {Influence of surface charge on the transport characteristics of nanowire-field effect transistors in liquid environments},
author = {Nozaki, Daijiro, E-mail: daijiro.nozaki@gmail.com, E-mail: research@nano.tu-dresden.de and Kunstmann, Jens and Theoretical Chemistry, Department of Chemistry and Food Chemistry, TU Dresden, 01062 Dresden and Zörgiebel, Felix and Center for Advancing Electronics Dresden and Cuniberti, Gianaurelio and Center for Advancing Electronics Dresden and Dresden Center for Computational Materials Science},
abstractNote = {One dimensional nanowire field effect transistors (NW-FETs) are a promising platform for sensor applications. The transport characteristics of NW-FETs are strongly modified in liquid environment due to the charging of surface functional groups accompanied with protonation or deprotonation. In order to investigate the influence of surface charges and ionic concentrations on the transport characteristics of Schottky-barrier NW-FETs, we have combined the modified Poisson-Boltzmann theory with the Landauer-Büttiker transport formalism. For a typical device, the model is able to capture the reduction of the sensitivity of NW-FETs in ionic solutions due to the screening from counter ions as well as a local gating from surface functional groups. Our approach allows to model, to investigate, and to optimize realistic Schottky-barrier NW-FET devices in liquid environment.},
doi = {10.1063/1.4921401},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 20,
volume = 106,
place = {United States},
year = {2015},
month = {5}
}