Gas sensing properties of SnO2 nanowires on micro-heater

In Sung Hwang; Eui Bok Lee; Sun Jung Kim; Joong Ki Choi; Jung Ho Cha; Ho Jun Lee; Byeong Kwon Ju; Jong Heun Lee

doi:10.1016/j.snb.2009.11.012

Gas sensing properties of SnO₂ nanowires on micro-heater

In Sung Hwang, Eui Bok Lee, Sun Jung Kim, Joong Ki Choi, Jung Ho Cha, Ho Jun Lee, Byeong Kwon Ju, Jong Heun Lee

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

52 Citations (Scopus)

Abstract

The SnO₂ nanowires (NWs) network gas sensors were fabricated on a micro-electrode and heater suspended in a cavity. The sensors showed selective detection to C₂H₅OH at a heater power during sensor operation as low as 30-40 mW. The gas response and response speed of the SnO₂ NWs sensor to 100 ppm C₂H₅OH were 4.6- and 4.7-fold greater, respectively, than those of the SnO₂ nanoparticles (NPs) sensor with the same electrode geometry. The reasons for these enhanced gas sensing characteristics are discussed in relation to the sensing materials and sensor structures.

Original language	English
Pages (from-to)	295-300
Number of pages	6
Journal	Sensors and Actuators, B: Chemical
Volume	154
Issue number	2
DOIs	https://doi.org/10.1016/j.snb.2009.11.012
Publication status	Published - 2011 Jun 20

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) NRL program (No. R0A-2008-000-20032-0), the IT R&D program of MKE/IITA [2006-S-078-03, Environmental Sensing and Alerting System with Nano-Wire and Nano-tube], and a grant from the Fundamental R&D program for Core Technology of Materials (M2008010013) funded by the Korean government.

Keywords

C HOH
Gas sensors
Micro-heater
Nanowires (NWs)
SnO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1016/j.snb.2009.11.012

Cite this

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title = "Gas sensing properties of SnO2 nanowires on micro-heater",

abstract = "The SnO2 nanowires (NWs) network gas sensors were fabricated on a micro-electrode and heater suspended in a cavity. The sensors showed selective detection to C2H5OH at a heater power during sensor operation as low as 30-40 mW. The gas response and response speed of the SnO2 NWs sensor to 100 ppm C2H5OH were 4.6- and 4.7-fold greater, respectively, than those of the SnO2 nanoparticles (NPs) sensor with the same electrode geometry. The reasons for these enhanced gas sensing characteristics are discussed in relation to the sensing materials and sensor structures.",

keywords = "C HOH, Gas sensors, Micro-heater, Nanowires (NWs), SnO",

author = "Hwang, {In Sung} and Lee, {Eui Bok} and Kim, {Sun Jung} and Choi, {Joong Ki} and Cha, {Jung Ho} and Lee, {Ho Jun} and Ju, {Byeong Kwon} and Lee, {Jong Heun}",

note = "Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) NRL program (No. R0A-2008-000-20032-0), the IT R&D program of MKE/IITA [2006-S-078-03, Environmental Sensing and Alerting System with Nano-Wire and Nano-tube], and a grant from the Fundamental R&D program for Core Technology of Materials (M2008010013) funded by the Korean government. ",

year = "2011",

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doi = "10.1016/j.snb.2009.11.012",

language = "English",

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AU - Hwang, In Sung

AU - Lee, Eui Bok

AU - Kim, Sun Jung

AU - Choi, Joong Ki

AU - Cha, Jung Ho

AU - Lee, Ho Jun

AU - Ju, Byeong Kwon

AU - Lee, Jong Heun

N1 - Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) NRL program (No. R0A-2008-000-20032-0), the IT R&D program of MKE/IITA [2006-S-078-03, Environmental Sensing and Alerting System with Nano-Wire and Nano-tube], and a grant from the Fundamental R&D program for Core Technology of Materials (M2008010013) funded by the Korean government.

PY - 2011/6/20

Y1 - 2011/6/20

N2 - The SnO2 nanowires (NWs) network gas sensors were fabricated on a micro-electrode and heater suspended in a cavity. The sensors showed selective detection to C2H5OH at a heater power during sensor operation as low as 30-40 mW. The gas response and response speed of the SnO2 NWs sensor to 100 ppm C2H5OH were 4.6- and 4.7-fold greater, respectively, than those of the SnO2 nanoparticles (NPs) sensor with the same electrode geometry. The reasons for these enhanced gas sensing characteristics are discussed in relation to the sensing materials and sensor structures.

AB - The SnO2 nanowires (NWs) network gas sensors were fabricated on a micro-electrode and heater suspended in a cavity. The sensors showed selective detection to C2H5OH at a heater power during sensor operation as low as 30-40 mW. The gas response and response speed of the SnO2 NWs sensor to 100 ppm C2H5OH were 4.6- and 4.7-fold greater, respectively, than those of the SnO2 nanoparticles (NPs) sensor with the same electrode geometry. The reasons for these enhanced gas sensing characteristics are discussed in relation to the sensing materials and sensor structures.

KW - C HOH

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KW - Micro-heater

KW - Nanowires (NWs)

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