-A A +A
We report on the potentiality of the Matrix-Assisted Pulsed Laser Evaporation (MAPLE) technique for the deposition of thin films of colloidal nanoparticles to be used for gas sensors based on electrical transduction mechanisms. The MAPLE technique seems very promising, since it permits a good thickness control even on rough substrates, generally used to enhance the active surface for gas adsorption. TiO2 (with a capping layer of benzyl alcohol) and SnO2 (with a capping layer of trioctylphosphine) colloidal nanoparticles were diluted in suitable solvents (0.2% concentration), frozen at liquid nitrogen temperature and ablated with a ArF (λ=193 nm) or KrF (248 nm) excimer laser. The nanoparticle thin films were deposited on silica, interdigitated alumina and Si substrates and submitted to morphological (SEM-FEG), structural (XRD, FTIR), optical (UV-Vis transmission) and electrical (sensing tests …
International Society for Optics and Photonics
Publication date: 
15 Jan 2008

AP Caricato, S Capone, M Epifani, M Lomascolo, A Luches, M Martino, F Romano, R Rella, P Siciliano, J Spadavecchia, A Taurino, T Tunno, D Valerini

Biblio References: 
Volume: 6985 Pages: 69850H
Fundamentals of Laser Assisted Micro-and Nanotechnologies