Laser stimulated light reflection reduction for silver nanoparticle-attached aluminum-doped zinc oxide substrate

• Principal role of Ag NP sizes on the output reflectivity decree is observed in AZO films.
• The optimal nanoparticle sizes are 40 nm.
• The process is slowly relaxed.

A principal possibility to operate the light reflection within the 350 nm–680 nm spectra wavelength range and related extinction efficiency of silver nanoparticle-attached aluminum-doped zinc oxide substrate using an external laser light was shown. The treatment was performed by a nanosecond Nd:YAG (1064 nm) and Er:glass (1540 nm) lasers and by the corresponding bicolor regime. The principal role of the interfaces separating the ZnO:Al substrate and topology of Ag NP is established using AFM analysis of the Ag NP possessing 20 nm, 40 nm and 60 nm average sizes. Different possible physical mechanisms are discussed including quadrupolar interaction of the electromagnetic wave and nanocomposites following the overlap between the surface plasmon resonance and the nano-trapping levels. The high selectivity to the photoexcited wavelength is explored. The sensitivity to the observed photoinducing laser wavelengths is discussed.