The selective detection of C2H5OH using SnO2-ZnO thin film gas sensors prepared by combinatorial solution deposition

Ki Won Kim; Pyeong Seok Cho; Sun Jung Kim; Jong Heun Lee; Chong-Yun Kang; Jin Sang Kim; Seok Jin Yoon

doi:10.1016/j.snb.2006.08.028

The selective detection of C₂H₅OH using SnO₂-ZnO thin film gas sensors prepared by combinatorial solution deposition

Ki Won Kim, Pyeong Seok Cho, Sun Jung Kim, Jong Heun Lee, Chong-Yun Kang, Jin Sang Kim, Seok Jin Yoon

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

193 Citations (Scopus)

Abstract

Sensing materials for selective detection of C₂H₅OH were designed using combinatorial solution deposition of SnO₂-ZnO thin films. The SnO₂-ZnO composite sensor prepared by alternate deposition of 10 droplets of SnO₂ and ZnO sols (S50Z50 sensor) showed a high response to 200 ppm C₂H₅OH (S(ethanol) = R_a/R_g = 4.69, R_a: resistance in air, R_g: resistance in gas) at 300 °C, while the gas responses to 100 ppm C₃H₈, 100 ppm CO, 200 ppm H₂, and 5 ppm NO₂ ranged from 1.11 to 1.19. The S(ethanol) value of the S50Z50 sensor was twice that to 200 ppm CH₃COCH₃ (S(acetone)). In contrast, the S(ethanol) and S(acetone) of pure SnO₂ and ZnO thin films were similar to each other. The heterostructure between SnO₂ and ZnO was suggested as one of the probable reasons for the successful discrimination between C₂H₅OH and CH₃COCH₃.

Original language	English
Pages (from-to)	318-324
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	123
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2006.08.028
Publication status	Published - 2007 Apr 10

Keywords

CHOH
Combinatorial solution deposition
Gas sensor
SnO
ZnO

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.2006.08.028

Cite this

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title = "The selective detection of C2H5OH using SnO2-ZnO thin film gas sensors prepared by combinatorial solution deposition",

abstract = "Sensing materials for selective detection of C2H5OH were designed using combinatorial solution deposition of SnO2-ZnO thin films. The SnO2-ZnO composite sensor prepared by alternate deposition of 10 droplets of SnO2 and ZnO sols (S50Z50 sensor) showed a high response to 200 ppm C2H5OH (S(ethanol) = Ra/Rg = 4.69, Ra: resistance in air, Rg: resistance in gas) at 300 °C, while the gas responses to 100 ppm C3H8, 100 ppm CO, 200 ppm H2, and 5 ppm NO2 ranged from 1.11 to 1.19. The S(ethanol) value of the S50Z50 sensor was twice that to 200 ppm CH3COCH3 (S(acetone)). In contrast, the S(ethanol) and S(acetone) of pure SnO2 and ZnO thin films were similar to each other. The heterostructure between SnO2 and ZnO was suggested as one of the probable reasons for the successful discrimination between C2H5OH and CH3COCH3.",

keywords = "CHOH, Combinatorial solution deposition, Gas sensor, SnO, ZnO",

author = "Kim, {Ki Won} and Cho, {Pyeong Seok} and Kim, {Sun Jung} and Lee, {Jong Heun} and Chong-Yun Kang and Kim, {Jin Sang} and Yoon, {Seok Jin}",

note = "Funding Information: This research was supported by a grant from the Core Technology Development Program funded by the Ministry of Commerce, Industry and Energy (MOCIE), Republic of Korea. ",

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AU - Kim, Ki Won

AU - Cho, Pyeong Seok

AU - Kim, Sun Jung

AU - Lee, Jong Heun

AU - Kang, Chong-Yun

AU - Kim, Jin Sang

AU - Yoon, Seok Jin

N1 - Funding Information: This research was supported by a grant from the Core Technology Development Program funded by the Ministry of Commerce, Industry and Energy (MOCIE), Republic of Korea.

PY - 2007/4/10

Y1 - 2007/4/10

N2 - Sensing materials for selective detection of C2H5OH were designed using combinatorial solution deposition of SnO2-ZnO thin films. The SnO2-ZnO composite sensor prepared by alternate deposition of 10 droplets of SnO2 and ZnO sols (S50Z50 sensor) showed a high response to 200 ppm C2H5OH (S(ethanol) = Ra/Rg = 4.69, Ra: resistance in air, Rg: resistance in gas) at 300 °C, while the gas responses to 100 ppm C3H8, 100 ppm CO, 200 ppm H2, and 5 ppm NO2 ranged from 1.11 to 1.19. The S(ethanol) value of the S50Z50 sensor was twice that to 200 ppm CH3COCH3 (S(acetone)). In contrast, the S(ethanol) and S(acetone) of pure SnO2 and ZnO thin films were similar to each other. The heterostructure between SnO2 and ZnO was suggested as one of the probable reasons for the successful discrimination between C2H5OH and CH3COCH3.

AB - Sensing materials for selective detection of C2H5OH were designed using combinatorial solution deposition of SnO2-ZnO thin films. The SnO2-ZnO composite sensor prepared by alternate deposition of 10 droplets of SnO2 and ZnO sols (S50Z50 sensor) showed a high response to 200 ppm C2H5OH (S(ethanol) = Ra/Rg = 4.69, Ra: resistance in air, Rg: resistance in gas) at 300 °C, while the gas responses to 100 ppm C3H8, 100 ppm CO, 200 ppm H2, and 5 ppm NO2 ranged from 1.11 to 1.19. The S(ethanol) value of the S50Z50 sensor was twice that to 200 ppm CH3COCH3 (S(acetone)). In contrast, the S(ethanol) and S(acetone) of pure SnO2 and ZnO thin films were similar to each other. The heterostructure between SnO2 and ZnO was suggested as one of the probable reasons for the successful discrimination between C2H5OH and CH3COCH3.

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