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Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
Published on: April 12, 2018
Electrolyte-gated transistors based on conducting polymer nanowire junction arrays
Maksudul M Alam1, Jun Wang, Yaoyao Guo
1Crump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, 700 Westwood Plaza, Los Angeles, California 90095, USA.
The Journal of Physical Chemistry. B
|July 21, 2006
Summary
This study shows conducting polymer nanowire transistors achieve high on/off ratios using electrolyte gating. Electrochemical fabrication enhances these effects, enabling simple conversion of two-terminal devices into transistors for signal amplification.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics
Background:
- Conducting polymers offer unique electronic properties for device applications.
- Electrolyte-gating is a promising technique for modulating semiconductor behavior.
- Nanostructured materials can enhance device performance through increased surface area and tailored morphology.
Purpose of the Study:
- To investigate electrolyte gating and doping effects in conducting polymer nanowire transistors.
- To explore the influence of different conducting polymers (polyaniline, polypyrrole, poly(ethylenedioxythiophene)) on device performance.
- To demonstrate the conversion of two-terminal devices into three-terminal transistors using electrolyte gating.
Main Methods:
- Fabrication of conducting polymer nanowire electrode junction arrays.
- Electrolyte-gating experiments in buffered aqueous media.
- Characterization of transistor performance, including on/off current ratios, under varying gate biases and medium acidity.
Main Results:
- Polyaniline nanowire-based transistors exhibited a significant on/off current ratio of 978 under positive gate bias.
- Device performance was sensitive to the acidity of the electrolyte gate medium.
- Electrolyte gating and doping effects were attributed to the electrochemically fabricated nanostructures.
Conclusions:
- Electrolyte gating is an effective method for modulating the electrical properties of conducting polymer nanowire transistors.
- The nanostructured morphology of electrochemically fabricated conducting polymer nanowires is crucial for efficient gating and doping.
- Two-terminal devices can be readily transformed into functional three-terminal transistors, opening possibilities for signal amplification and enhanced device performance.
