Effect of Firing Temperature on Electrical and Gas‐Sensing Properties of Nano‐SnO 2 ‐Based Thick‐Film Resistors
Nano‐SnO 2 ‐based thick‐film resistors were fabricated using screen printing technology. To study the effect of firing temperature, sensors were fired in the range 425–850°C. A mixture of tetragonal and orthorhombic SnO 2 was observed in the range 425–700°C. Above 700°C, the presence of majority tet...
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| Published in | International journal of applied ceramic technology Vol. 4; no. 5; pp. 446 - 452 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
01.10.2007
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| Online Access | Get full text |
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| Summary: | Nano‐SnO
2
‐based thick‐film resistors were fabricated using screen printing technology. To study the effect of firing temperature, sensors were fired in the range 425–850°C. A mixture of tetragonal and orthorhombic SnO
2
was observed in the range 425–700°C. Above 700°C, the presence of majority tetragonal phase was observed. The sheet resistivity and TCR values were one to two orders of magnitude less than the reported values. Sensors fired at 750°C showed the highest sensitivity and selectivity for H
2
, CO, and LPG at 140°C, 210°C, and 180°C, respectively, with a response and recovery time of 12 and 22 s. |
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| ISSN: | 1546-542X 1744-7402 |
| DOI: | 10.1111/j.1744-7402.2007.02158.x |