Abstract
A low pressure evaporation method was adopted for preparing SnO2 and CuO-SnO2 thin films. Metallic tin and copper were evaporated on the alumina substrate under a low pressure (1 torr) of air atmosphere. As observed with AFM, these evaporated films had unique microstructure in which discrete clusters of SnO2 grains (30 nm) contacted to each other two-dimensionally with large mesopores penetrating between. The film added with a small amount of CuO exhibited very high sensitivity to H2S in air, being able to detect dilute H2S close to 0.02 ppm at 300 °C. The high sensitivity seems to result from the unique promoting effect of CuO coupled with the unique microstructure of the film.
| Original language | English |
|---|---|
| Pages (from-to) | 121-125 |
| Number of pages | 5 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 49 |
| Issue number | 1-2 |
| Publication status | Published - Jun 25 1998 |
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All Science Journal Classification (ASJC) codes
- Analytical Chemistry
- Electrochemistry
- Electrical and Electronic Engineering
Cite this
Dilute hydrogen sulfide sensing properties of CuO-SnO2 thin film prepared by low-pressure evaporation method. / Tamaki, Jun; Shimanoe, Kengo; Yamada, Yoshihiro; Yamamoto, Yoshifumi; Miura, Norio; Yamazoe, Noboru.
In: Sensors and Actuators, B: Chemical, Vol. 49, No. 1-2, 25.06.1998, p. 121-125.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dilute hydrogen sulfide sensing properties of CuO-SnO2 thin film prepared by low-pressure evaporation method
AU - Tamaki, Jun
AU - Shimanoe, Kengo
AU - Yamada, Yoshihiro
AU - Yamamoto, Yoshifumi
AU - Miura, Norio
AU - Yamazoe, Noboru
PY - 1998/6/25
Y1 - 1998/6/25
N2 - A low pressure evaporation method was adopted for preparing SnO2 and CuO-SnO2 thin films. Metallic tin and copper were evaporated on the alumina substrate under a low pressure (1 torr) of air atmosphere. As observed with AFM, these evaporated films had unique microstructure in which discrete clusters of SnO2 grains (30 nm) contacted to each other two-dimensionally with large mesopores penetrating between. The film added with a small amount of CuO exhibited very high sensitivity to H2S in air, being able to detect dilute H2S close to 0.02 ppm at 300 °C. The high sensitivity seems to result from the unique promoting effect of CuO coupled with the unique microstructure of the film.
AB - A low pressure evaporation method was adopted for preparing SnO2 and CuO-SnO2 thin films. Metallic tin and copper were evaporated on the alumina substrate under a low pressure (1 torr) of air atmosphere. As observed with AFM, these evaporated films had unique microstructure in which discrete clusters of SnO2 grains (30 nm) contacted to each other two-dimensionally with large mesopores penetrating between. The film added with a small amount of CuO exhibited very high sensitivity to H2S in air, being able to detect dilute H2S close to 0.02 ppm at 300 °C. The high sensitivity seems to result from the unique promoting effect of CuO coupled with the unique microstructure of the film.
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UR - http://www.scopus.com/inward/citedby.url?scp=0345914919&partnerID=8YFLogxK
M3 - Article
VL - 49
SP - 121
EP - 125
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
IS - 1-2
ER -