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A two-step bottom up preparation protocol is proposed as a useful tool for the controlled modification of tin oxide films by means of Pd nanoparticles (PdNPs). Colloidal palladium is prepared via an electrolytic process that affords for a core-shell particle structure, while nanostructured tin oxide films are prepared following a sol–gel process. Pd/SnOx composite layers are obtained adding a proper aliquot of pre-formed PdNPs to the tin oxide precursor solution. The nanomaterials surface chemical composition is addressed by X-ray Photoelectron Spectroscopy. Preliminary results on the application of Pd/SnOx as active layers in chemiresistor-type gas-sensing devices are reported, as well.
Publication date: 
1 Dec 2006

Nicola Cioffi, L Traversa, Nicoletta Ditaranto, Antonietta M Taurino, M Epifani, Pietro Siciliano, T Bleve-Zacheo, Luigia Sabbatini, Luisa Torsi, PG Zambonin

Biblio References: 
Volume: 37 Issue: 12 Pages: 1620-1628
Microelectronics journal