Ag–TiO<sub>2</sub> nanocermet thin films, deposited for optical filtering applications by two sputtering techniques, codeposition and multilayer deposition, exhibit surface plasmon absorption in the spectral range 450–500 nm. The cosputtering technique induces a columnar growth, whereas multilayer deposition produces a more-random distribution of silver inclusions. Both films have large, flat silver grains at the air–cermet interface. An optical double-heterogeneous layer model based on the experimental morphological parameters of the films accounts well for their experimental transmittance, notably for extra absorption near 700 nm, which is attributed to a surface plasmon in the flat silver grains of the surface.
© 2000 Optical Society of America
Anass Dakka, Jacques Lafait, Claude Sella, Serge Berthier, Mohammed Abd-Lefdil, Jean-Claude Martin, and Malik Maaza, "Optical Properties of Ag–TiO2 Nanocermet Films Prepared by Cosputtering and Multilayer Deposition Techniques," Appl. Opt. 39, 2745-2753 (2000)