Carbon nanotube thin films functionalized via loading of au nanoclusters for flexible gas sensors Devices

Zheng Dong Lin; Sheng Joue Young; Shoou Jinn Chang

doi:10.1109/TED.2015.2504105

Carbon nanotube thin films functionalized via loading of au nanoclusters for flexible gas sensors Devices

Zheng Dong Lin, Sheng Joue Young, Shoou Jinn Chang

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

30 Citations (Scopus)

Abstract

Carbon nanotubes (CNTs) have been demonstrated to be one of the most interesting materials for gas sensing. This paper applies a simple method for the direct transfer of high-density CNTs from a SiO₂/Si substrate to a flexible substrate for carbon dioxide (CO₂), ammonia (NH₃), and isopropyl alcohol gas sensing at room temperature. The flexible gas sensor exhibited high sensitivities of 4.8%, 5.4%, and 5.2% at room temperature for ambient CO₂, NH₃, and isopropyl alcohol gas concentrations of 800 ppm, respectively. In addition, the gas response of the CNT-based chemiresistor is attributed to p-type conductivity in the Au-modified semiconducting CNTs. Very good repeatability of the sensor response to gas concentration is demonstrated, representing a major step toward the low-cost large-scale production of this class of device.

Original language	English
Article number	7350240
Pages (from-to)	476-480
Number of pages	5
Journal	IEEE Transactions on Electron Devices
Volume	63
Issue number	1
DOIs	https://doi.org/10.1109/TED.2015.2504105
Publication status	Published - 2016 Jan 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TED.2015.2504105

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title = "Carbon nanotube thin films functionalized via loading of au nanoclusters for flexible gas sensors Devices",

abstract = "Carbon nanotubes (CNTs) have been demonstrated to be one of the most interesting materials for gas sensing. This paper applies a simple method for the direct transfer of high-density CNTs from a SiO2/Si substrate to a flexible substrate for carbon dioxide (CO2), ammonia (NH3), and isopropyl alcohol gas sensing at room temperature. The flexible gas sensor exhibited high sensitivities of 4.8%, 5.4%, and 5.2% at room temperature for ambient CO2, NH3, and isopropyl alcohol gas concentrations of 800 ppm, respectively. In addition, the gas response of the CNT-based chemiresistor is attributed to p-type conductivity in the Au-modified semiconducting CNTs. Very good repeatability of the sensor response to gas concentration is demonstrated, representing a major step toward the low-cost large-scale production of this class of device.",

author = "Lin, {Zheng Dong} and Young, {Sheng Joue} and Chang, {Shoou Jinn}",

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AB - Carbon nanotubes (CNTs) have been demonstrated to be one of the most interesting materials for gas sensing. This paper applies a simple method for the direct transfer of high-density CNTs from a SiO2/Si substrate to a flexible substrate for carbon dioxide (CO2), ammonia (NH3), and isopropyl alcohol gas sensing at room temperature. The flexible gas sensor exhibited high sensitivities of 4.8%, 5.4%, and 5.2% at room temperature for ambient CO2, NH3, and isopropyl alcohol gas concentrations of 800 ppm, respectively. In addition, the gas response of the CNT-based chemiresistor is attributed to p-type conductivity in the Au-modified semiconducting CNTs. Very good repeatability of the sensor response to gas concentration is demonstrated, representing a major step toward the low-cost large-scale production of this class of device.

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Carbon nanotube thin films functionalized via loading of au nanoclusters for flexible gas sensors Devices

Abstract

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