Abstract
Porous thin films of SnO2 were prepared on an alumina substrate using hydrothermally synthesized SnO2 sol, to investigate the influences of film-preparation conditions on the microstructure and H2S sensing characteristics of the thin films obtained. The sensitivity and response transient to 5 ppm H2S in air depended significantly on calcination temperature, operating temperature and film thickness. The 0.6 μm-thick SnO2 film calcined at an optimum temperature of 700°C exhibited gas sensitivity (the ratio of electrical resistance in air to that in gas) as high as 550 together with good response transient characteristics to 5 ppm H2S in air at 200°C. The crystallite size of SnO2 as well as the pore size increased uniformly with a rise in calcination temperature, growing to 17.4 nm and 21 nm, at 700°C, respectively. The formation of well-defined large mesopores appears to be responsible for the excellent H2S sensing characteristics.
| Original language | English |
|---|---|
| Pages (from-to) | 409-414 |
| Number of pages | 6 |
| Journal | Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan |
| Volume | 104 |
| Issue number | 5 |
| Publication status | Published - 1996 |
| Externally published | Yes |
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Keywords
- Gas sensor
- Hydrogen sulfide
- Microstructure
- Pore size
- Sol
- Thin film
- Tin oxide
ASJC Scopus subject areas
- Ceramics and Composites
Cite this
Hydrogen sulfide sensing characteristics of tin oxide sol-derived thin films. / Ando, Masami; Suto, Seiichi; Suzuki, Takahiro; Tsuchida, Takashi; Nakayama, Chiaki; Miura, Norio; Yamazoe, Noboru.
In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 104, No. 5, 1996, p. 409-414.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Hydrogen sulfide sensing characteristics of tin oxide sol-derived thin films
AU - Ando, Masami
AU - Suto, Seiichi
AU - Suzuki, Takahiro
AU - Tsuchida, Takashi
AU - Nakayama, Chiaki
AU - Miura, Norio
AU - Yamazoe, Noboru
PY - 1996
Y1 - 1996
N2 - Porous thin films of SnO2 were prepared on an alumina substrate using hydrothermally synthesized SnO2 sol, to investigate the influences of film-preparation conditions on the microstructure and H2S sensing characteristics of the thin films obtained. The sensitivity and response transient to 5 ppm H2S in air depended significantly on calcination temperature, operating temperature and film thickness. The 0.6 μm-thick SnO2 film calcined at an optimum temperature of 700°C exhibited gas sensitivity (the ratio of electrical resistance in air to that in gas) as high as 550 together with good response transient characteristics to 5 ppm H2S in air at 200°C. The crystallite size of SnO2 as well as the pore size increased uniformly with a rise in calcination temperature, growing to 17.4 nm and 21 nm, at 700°C, respectively. The formation of well-defined large mesopores appears to be responsible for the excellent H2S sensing characteristics.
AB - Porous thin films of SnO2 were prepared on an alumina substrate using hydrothermally synthesized SnO2 sol, to investigate the influences of film-preparation conditions on the microstructure and H2S sensing characteristics of the thin films obtained. The sensitivity and response transient to 5 ppm H2S in air depended significantly on calcination temperature, operating temperature and film thickness. The 0.6 μm-thick SnO2 film calcined at an optimum temperature of 700°C exhibited gas sensitivity (the ratio of electrical resistance in air to that in gas) as high as 550 together with good response transient characteristics to 5 ppm H2S in air at 200°C. The crystallite size of SnO2 as well as the pore size increased uniformly with a rise in calcination temperature, growing to 17.4 nm and 21 nm, at 700°C, respectively. The formation of well-defined large mesopores appears to be responsible for the excellent H2S sensing characteristics.
KW - Gas sensor
KW - Hydrogen sulfide
KW - Microstructure
KW - Pore size
KW - Sol
KW - Thin film
KW - Tin oxide
UR - http://www.scopus.com/inward/record.url?scp=0030143781&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030143781&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0030143781
VL - 104
SP - 409
EP - 414
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 0914-5400
IS - 5
ER -