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Optimal Doping for Enhanced SnO2 Sensitivity and Thermal Stability

Tricoli, Antonio; Graf, M; Pratsinis, S.E


Tin oxide nanocrystals (5-10 nm) doped with silica (0-15 wt %) were made by flame-spray-pyrolysis direct deposition onto the sensing electrodes and in situ stabilization by rapid flame annealing. Although increased SiO 2-doping reduced the SnO2 crystal and grain size, its sensing performance to ethanol vapor (0.1-50 ppm) exhibited an optimum with respect to SiO2 content. The thermal stability and morphology of SiO2-doped SnO2 nanoparticles were evaluated by sintering at 200-900°C for 4-24 h in...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Advanced Functional Materials
DOI: 10.1002/adfm.200700784


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