Transparent Metal-Ferroelectric nanocomposite thick films prepared by Aerosol Deposition Method

We prepared high transparent metal-ferroelectric nanocomposite thick films by aerosol deposition method (ADM) and report their enhanced surface plasmon resonance (SPR) properties. ADM has been attracting much attention for its ability to deposit complex composite films at a high deposition rate and a low process temperature. Composite metal-dielectric powders are prepared from submicron particles of PZT and nano particles of gold (10-40 nm) with concentrations below 1 wt%. Nanocomposite gold/PZT 3-μm-thick film acquired enhanced SPR at approximately 640 nm as a result of annealing. The SPR position in nanocomposite films deposited by ADM can be precisely controlled by adjusting the dielectric constant of the host matrix by annealing.. Moreover, we succeeded in room-tenperature-deposition of gold/α-Al₂O₃ nanocomposite films with high transparent red color for the first time.