Alam Maksudul M, Wang Jun, Guo Yaoyao, Lee Stephanie P, Tseng Hsian-Rong
Crump 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.
J Phys Chem B. 2005 Jul 7;109(26):12777-84. doi: 10.1021/jp050903k.
In this study, we describe the electrolyte gating and doping effects of transistors based on conducting polymer nanowire electrode junction arrays in buffered aqueous media. Conducting polymer nanowires including polyaniline, polypyrrole, and poly(ethylenedioxythiophene) were investigated. In the presence of a positive gate bias, the device exhibits a large on/off current ratio of 978 for polyaniline nanowire-based transistors; these values vary according to the acidity of the gate medium. We attribute these efficient electrolyte gating and doping effects to the electrochemically fabricated nanostructures of conducting polymer nanowires. This study demonstrates that two-terminal devices can be easily converted into three-terminal transistors by simply immersing the device into an electrolyte solution along with a gate electrode. Here, the field-induced modulation can be applied for signal amplification to enhance the device performance.
在本研究中，我们描述了基于导电聚合物纳米线电极结阵列的晶体管在缓冲水性介质中的电解质门控和掺杂效应。研究了包括聚苯胺、聚吡咯和聚（乙撑二氧噻吩）在内的导电聚合物纳米线。在正栅极偏压存在的情况下，基于聚苯胺纳米线的晶体管器件表现出978的大开关电流比；这些值会根据栅极介质的酸度而变化。我们将这些有效的电解质门控和掺杂效应归因于导电聚合物纳米线的电化学制备纳米结构。本研究表明，通过简单地将器件与栅电极一起浸入电解质溶液中，双端器件可以很容易地转换为三端晶体管。在这里，场诱导调制可用于信号放大以提高器件性能。
