Antireflection properties of composite zeolite gold nanoparticles film

Abstract

The influence of gold nanoparticles on the antireflection properties of a thin film of zeolite 3A has been investigated. A low-temperature technique combining zeolite deposition with pulsed-laser gold deposition was used for the fabrication of a composite thin film on a silicon substrate. Experimental results obtained by modulationpolarisation spectroscopy showed that the antireflection effects in polarised electromagnetic radiation can achieve a decreased degree of reflectivity in a wide spectral range due to the presence of plasmonic nanoparticles on the surface of the film.

Gold Nanoparticle Self-Aggregation on Surface with 1,6-Hexanedithiol Functionalization

“…Modulation polarimetry was measured of the Q-and V-component of a Stokes vector in geometry external reflection at a 45 • incident angle within the wavelength range λ = 400-1000 nm. The parameter ρ is a Q-component [42] that characterizes amplitude anisotropy of the interaction with light. The registered signal is the polarization difference ρ(λ) = R s −R p [42][43][44].…”

“…The parameter ρ is a Q-component [42] that characterizes amplitude anisotropy of the interaction with light. The registered signal is the polarization difference ρ(λ) = R s −R p [42][43][44]. R s and R p are the spectra of reflectance for s-polarized and p-polarized light, respectively.…”

“…The Q-component is determined by the linear (amplitude) anisotropy since it is equal to the difference between the reflectance of R s and R p . The decrease of the spectral amplitude of Q(λ) for S30/20 was related to an increase of nanoparticle concentration and a resonance interaction with electromagnetic radiation [42,64] (Figure 8a). The Q-component takes into account the simultaneous interaction with s-and p-polarized electromagnetic radiation.…”

“…polarization difference ρ(λ) = Rs-Rp [42][43][44]. Rs and Rp are the spectra of reflectance for s-polarized and p-polarized light, respectively.…”

A Brief Review on Solvent-Free Synthesis of Zeolites

“…Zeolites, a kind of crystalline microporous material with outstanding hydrothermal stability, are one of the most important industrial inorganic solids [ 1 , 2 , 3 , 4 ], which have been widely applied in the field of ion exchange, adsorption, separation, medicine, optoelectronics and catalysis [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. Zeolites can be obtained from natural ores or artificially synthesized.…”