CO sensing properties of SnO{sub 2} thin films prepared by the sol-gel process

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:441290

Rella, R; Serra, A; Siciliano, P; Vasanelli, L ^[1]

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1. Instituto Materiali per l`Elettronica, Lecce (Italy); and others

An investigation of the electrical conductivity of the films exposed to various level of carbon oxide (CO) was also carried-out. Electrical measurements in controlled atmosphere showed that the gas sensing characteristics are different for pure and Pd:SnO{sub 2}. In particular Pd doped thin films show a higher sensitivity to carbon monoxide gas and an optimum operating temperature lower than pure SnO{sub 2} films. In conclusion, a comparison with SnO{sub 2} films grown by means of the reactive sputtering method suggest that sol-gel process is a good method for CO sensors preparation with the advantage of a lower cost of production. Long-term stability measurements allowed us to control the reliability of the realized devices.

• OSTI ID: 441290
• Report Number(s): CONF-960782--
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
33 ADVANCED PROPULSION SYSTEMS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
54 ENVIRONMENTAL SCIENCES
CARBON MONOXIDE
CHEMICAL PREPARATION
DESIGN
ELECTRIC CONDUCTIVITY
MEASURING INSTRUMENTS
MONITORING
PERFORMANCE
SOL-GEL PROCESS
TIN OXIDES