ZnO nanowires synthesized by CSS and their application as a hydrogen gas sensor

A. T.-Huerta, G. F. Perez-Sanchez, F. Chavez, P. Zaca-Moran, A. Morales-Acevedo, R. Pena-Sierra, O. Goiz, D. Cortes-Salinas

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Zinc oxide nanowires (ZnO-NWs) were synthesized through two simple processes on silicon substrates. The first step was to obtain the zinc nanowires (Zn-NWs) by close spaced sublimation (CSS) on a quartz substrate. The second step was the transformation of Zn-NWs to ZnO-NWs by a simple thermal annealing in air environment. In the synthesis process a zinc pellet source was used as the source material, where the temperatures of the source, the temperature of the substrate, and the growth time were fixed at 350°C, 325°C, and 5 minutes respectively, using a nitrogen environment at atmospheric pressure conditions. Afterwards, the as-prepared Zn-NWs sample was heated at 400°C for 30 minutes in open tube conditions. In addition, a conductimetric gas sensor was fabricated using the annealed Zn-NWs based film. The sensor was tested to hydrogen at moderate temperatures (200-400°C) for several concentrations (95-1492 ppm). The results revealed that the ZnO-NWs have a high response to hydrogen at high temperatures and high concentrations. The response and recovery times depend on the hydrogen concentration. The response time for almost all conditions is of the order of 2 minutes. These results are very promising for the development of hydrogen solid state gas sensors based on zinc oxide nanowires. © 2013 IEEE.
Original languageAmerican English
Pages488-492
Number of pages438
DOIs
StatePublished - 1 Jan 2013
Event2013 10th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2013 -
Duration: 1 Jan 2013 → …

Conference

Conference2013 10th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2013
Period1/01/13 → …

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Sublimation
sublimation
Chemical sensors
Nanowires
zinc
hydrogen
sensor
Hydrogen
Zinc oxide
Zinc
gas
oxide
substrate
Substrates
Solid-state sensors
Temperature
temperature
annealing
Atmospheric pressure
Quartz

Cite this

T.-Huerta, A., Perez-Sanchez, G. F., Chavez, F., Zaca-Moran, P., Morales-Acevedo, A., Pena-Sierra, R., ... Cortes-Salinas, D. (2013). ZnO nanowires synthesized by CSS and their application as a hydrogen gas sensor. 488-492. Paper presented at 2013 10th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2013, . https://doi.org/10.1109/ICEEE.2013.6676025
T.-Huerta, A. ; Perez-Sanchez, G. F. ; Chavez, F. ; Zaca-Moran, P. ; Morales-Acevedo, A. ; Pena-Sierra, R. ; Goiz, O. ; Cortes-Salinas, D. / ZnO nanowires synthesized by CSS and their application as a hydrogen gas sensor. Paper presented at 2013 10th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2013, .438 p.
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abstract = "Zinc oxide nanowires (ZnO-NWs) were synthesized through two simple processes on silicon substrates. The first step was to obtain the zinc nanowires (Zn-NWs) by close spaced sublimation (CSS) on a quartz substrate. The second step was the transformation of Zn-NWs to ZnO-NWs by a simple thermal annealing in air environment. In the synthesis process a zinc pellet source was used as the source material, where the temperatures of the source, the temperature of the substrate, and the growth time were fixed at 350°C, 325°C, and 5 minutes respectively, using a nitrogen environment at atmospheric pressure conditions. Afterwards, the as-prepared Zn-NWs sample was heated at 400°C for 30 minutes in open tube conditions. In addition, a conductimetric gas sensor was fabricated using the annealed Zn-NWs based film. The sensor was tested to hydrogen at moderate temperatures (200-400°C) for several concentrations (95-1492 ppm). The results revealed that the ZnO-NWs have a high response to hydrogen at high temperatures and high concentrations. The response and recovery times depend on the hydrogen concentration. The response time for almost all conditions is of the order of 2 minutes. These results are very promising for the development of hydrogen solid state gas sensors based on zinc oxide nanowires. {\circledC} 2013 IEEE.",
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T.-Huerta, A, Perez-Sanchez, GF, Chavez, F, Zaca-Moran, P, Morales-Acevedo, A, Pena-Sierra, R, Goiz, O & Cortes-Salinas, D 2013, 'ZnO nanowires synthesized by CSS and their application as a hydrogen gas sensor', Paper presented at 2013 10th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2013, 1/01/13 pp. 488-492. https://doi.org/10.1109/ICEEE.2013.6676025

ZnO nanowires synthesized by CSS and their application as a hydrogen gas sensor. / T.-Huerta, A.; Perez-Sanchez, G. F.; Chavez, F.; Zaca-Moran, P.; Morales-Acevedo, A.; Pena-Sierra, R.; Goiz, O.; Cortes-Salinas, D.

2013. 488-492 Paper presented at 2013 10th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2013, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - ZnO nanowires synthesized by CSS and their application as a hydrogen gas sensor

AU - T.-Huerta, A.

AU - Perez-Sanchez, G. F.

AU - Chavez, F.

AU - Zaca-Moran, P.

AU - Morales-Acevedo, A.

AU - Pena-Sierra, R.

AU - Goiz, O.

AU - Cortes-Salinas, D.

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Y1 - 2013/1/1

N2 - Zinc oxide nanowires (ZnO-NWs) were synthesized through two simple processes on silicon substrates. The first step was to obtain the zinc nanowires (Zn-NWs) by close spaced sublimation (CSS) on a quartz substrate. The second step was the transformation of Zn-NWs to ZnO-NWs by a simple thermal annealing in air environment. In the synthesis process a zinc pellet source was used as the source material, where the temperatures of the source, the temperature of the substrate, and the growth time were fixed at 350°C, 325°C, and 5 minutes respectively, using a nitrogen environment at atmospheric pressure conditions. Afterwards, the as-prepared Zn-NWs sample was heated at 400°C for 30 minutes in open tube conditions. In addition, a conductimetric gas sensor was fabricated using the annealed Zn-NWs based film. The sensor was tested to hydrogen at moderate temperatures (200-400°C) for several concentrations (95-1492 ppm). The results revealed that the ZnO-NWs have a high response to hydrogen at high temperatures and high concentrations. The response and recovery times depend on the hydrogen concentration. The response time for almost all conditions is of the order of 2 minutes. These results are very promising for the development of hydrogen solid state gas sensors based on zinc oxide nanowires. © 2013 IEEE.

AB - Zinc oxide nanowires (ZnO-NWs) were synthesized through two simple processes on silicon substrates. The first step was to obtain the zinc nanowires (Zn-NWs) by close spaced sublimation (CSS) on a quartz substrate. The second step was the transformation of Zn-NWs to ZnO-NWs by a simple thermal annealing in air environment. In the synthesis process a zinc pellet source was used as the source material, where the temperatures of the source, the temperature of the substrate, and the growth time were fixed at 350°C, 325°C, and 5 minutes respectively, using a nitrogen environment at atmospheric pressure conditions. Afterwards, the as-prepared Zn-NWs sample was heated at 400°C for 30 minutes in open tube conditions. In addition, a conductimetric gas sensor was fabricated using the annealed Zn-NWs based film. The sensor was tested to hydrogen at moderate temperatures (200-400°C) for several concentrations (95-1492 ppm). The results revealed that the ZnO-NWs have a high response to hydrogen at high temperatures and high concentrations. The response and recovery times depend on the hydrogen concentration. The response time for almost all conditions is of the order of 2 minutes. These results are very promising for the development of hydrogen solid state gas sensors based on zinc oxide nanowires. © 2013 IEEE.

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T.-Huerta A, Perez-Sanchez GF, Chavez F, Zaca-Moran P, Morales-Acevedo A, Pena-Sierra R et al. ZnO nanowires synthesized by CSS and their application as a hydrogen gas sensor. 2013. Paper presented at 2013 10th International Conference on Electrical Engineering, Computing Science and Automatic Control, CCE 2013, . https://doi.org/10.1109/ICEEE.2013.6676025