Ce-doped iron oxide thin films have been prepared by a liquid phase method (LPD) and tested as alcohol sensors. Sensing tests carried out at 300°C have shown that the addition of Ce to Fe_2O_3 increases the sensitivity to methanol. The optimum loading of Ce was around 50% in moles. A microstructural and electrical characterization was carried out in order to investigate the effect of Ce on the methanol sensitivity of Fe_2O_3 films. The reactivity of the mixed oxides towards methanol oxidation has been also investigated. According to the obtained results, a discussion on the role played by Ce on the methanol sensing properties of iron oxide thin films is presented.
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