Electrical properties of single and multiple poly(3,4-ethylenedioxythiophene) nanowires for sensing nitric oxide gas

Hui Hsin Lu; Chia Yu Lin; Tzu-Chien Hsiao; Yueh Yuan Fang; Kuo Chuan Ho; Dongfang Yang; Chih Kung Lee; Su Ming Hsu; Chii Wann Lin

doi:10.1016/j.aca.2009.03.006

Electrical properties of single and multiple poly(3,4-ethylenedioxythiophene) nanowires for sensing nitric oxide gas

Hui Hsin Lu, Chia Yu Lin, Tzu-Chien Hsiao, Yueh Yuan Fang, Kuo Chuan Ho, Dongfang Yang, Chih Kung Lee, Su Ming Hsu, Chii Wann Lin^*

^*Corresponding author for this work

Department of Computer Science

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

The electrical properties of conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), nanowires were studied to develop nitric oxide (NO) gas sensors with low working temperatures. A nanowire with a diameter of 300 nm was fabricated using dip-pen nanolithography (DPN) across a 55 μm gap between a pair of electrodes. The electrical properties of single or multiple PEDOT nanowires were examined by plotting the current-voltage (I-V) curves in the range -3 V to +3 V at temperatures between 298 K and 393 K. The conductance of parallel wires was normalized with respect to the dimensions of the fabricated nanowires. The single nanowire exhibited nonlinear conductance associated with hysteresis but multiple wires did not. The currents increased with the temperature and the I-V characteristics were consistent with the power law G(T)αT^α with α∼ 5.14 and 5.43. The responses to NO were highly linear and reproducible, indicating that sensing using PEDOT nanowires was reliable with a minimal concentration of NO of 10 ppm.

Original language	English
Pages (from-to)	68-74
Number of pages	7
Journal	Analytica Chimica Acta
Volume	640
Issue number	1-2
DOIs	https://doi.org/10.1016/j.aca.2009.03.006
State	Published - 27 Apr 2009

Keywords

Dip-pen nanolithography
Nitric oxide gas sensor
Poly(3,4-ethylenedioxythiophene nanowires

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10.1016/j.aca.2009.03.006

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title = "Electrical properties of single and multiple poly(3,4-ethylenedioxythiophene) nanowires for sensing nitric oxide gas",

abstract = "The electrical properties of conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), nanowires were studied to develop nitric oxide (NO) gas sensors with low working temperatures. A nanowire with a diameter of 300 nm was fabricated using dip-pen nanolithography (DPN) across a 55 μm gap between a pair of electrodes. The electrical properties of single or multiple PEDOT nanowires were examined by plotting the current-voltage (I-V) curves in the range -3 V to +3 V at temperatures between 298 K and 393 K. The conductance of parallel wires was normalized with respect to the dimensions of the fabricated nanowires. The single nanowire exhibited nonlinear conductance associated with hysteresis but multiple wires did not. The currents increased with the temperature and the I-V characteristics were consistent with the power law G(T)αTα with α∼ 5.14 and 5.43. The responses to NO were highly linear and reproducible, indicating that sensing using PEDOT nanowires was reliable with a minimal concentration of NO of 10 ppm.",

keywords = "Dip-pen nanolithography, Nitric oxide gas sensor, Poly(3,4-ethylenedioxythiophene nanowires",

author = "Lu, {Hui Hsin} and Lin, {Chia Yu} and Tzu-Chien Hsiao and Fang, {Yueh Yuan} and Ho, {Kuo Chuan} and Dongfang Yang and Lee, {Chih Kung} and Hsu, {Su Ming} and Lin, {Chii Wann}",

year = "2009",

month = apr,

day = "27",

doi = "10.1016/j.aca.2009.03.006",

language = "English",

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AU - Lu, Hui Hsin

AU - Lin, Chia Yu

AU - Hsiao, Tzu-Chien

AU - Fang, Yueh Yuan

AU - Ho, Kuo Chuan

AU - Yang, Dongfang

AU - Lee, Chih Kung

AU - Hsu, Su Ming

AU - Lin, Chii Wann

PY - 2009/4/27

Y1 - 2009/4/27

N2 - The electrical properties of conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), nanowires were studied to develop nitric oxide (NO) gas sensors with low working temperatures. A nanowire with a diameter of 300 nm was fabricated using dip-pen nanolithography (DPN) across a 55 μm gap between a pair of electrodes. The electrical properties of single or multiple PEDOT nanowires were examined by plotting the current-voltage (I-V) curves in the range -3 V to +3 V at temperatures between 298 K and 393 K. The conductance of parallel wires was normalized with respect to the dimensions of the fabricated nanowires. The single nanowire exhibited nonlinear conductance associated with hysteresis but multiple wires did not. The currents increased with the temperature and the I-V characteristics were consistent with the power law G(T)αTα with α∼ 5.14 and 5.43. The responses to NO were highly linear and reproducible, indicating that sensing using PEDOT nanowires was reliable with a minimal concentration of NO of 10 ppm.

AB - The electrical properties of conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), nanowires were studied to develop nitric oxide (NO) gas sensors with low working temperatures. A nanowire with a diameter of 300 nm was fabricated using dip-pen nanolithography (DPN) across a 55 μm gap between a pair of electrodes. The electrical properties of single or multiple PEDOT nanowires were examined by plotting the current-voltage (I-V) curves in the range -3 V to +3 V at temperatures between 298 K and 393 K. The conductance of parallel wires was normalized with respect to the dimensions of the fabricated nanowires. The single nanowire exhibited nonlinear conductance associated with hysteresis but multiple wires did not. The currents increased with the temperature and the I-V characteristics were consistent with the power law G(T)αTα with α∼ 5.14 and 5.43. The responses to NO were highly linear and reproducible, indicating that sensing using PEDOT nanowires was reliable with a minimal concentration of NO of 10 ppm.

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KW - Nitric oxide gas sensor

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ER -

Electrical properties of single and multiple poly(3,4-ethylenedioxythiophene) nanowires for sensing nitric oxide gas

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