Abel Sambou^1,, Moulaye Diagne², Ansoumane Diedhiou³

Optical properties of nanoparticles tin dioxide and titanium dioxide mesoporous obtained by numerical simulation with matlab software. The whole spectra have been fitted by Drude model and Mie theory, whose best fit parameter such as the size, surrounding medium reveal the SnO₂ and TiO₂ nanoparticles were highly transparent with average transmittance exceeding 93% in the wavelength visible region between 300 and 800nm for both material. We demonstrate that in visible region in particular between 350 and 800 nm, the transmittance rate is independent of SnO₂ or TiO₂ size. Resonance band of Ag/SnO₂ nanoshell increase towards blue with an increase shell thickness in the investigated spectral rang. Absorption cross section spectra of Ag/SnO₂ nanoshel have maxima at 410 nm for silver nanoparticle and the maxima exhibite a blue gamme from 410 nm to 490 nm with an increase SnO₂ thickness from 0 nm to 100 nm. The illustrated results of this work (the high transparency and the resonance evolution) show this material could be good candidates for optoelectronic applications.

semiconductor, optical windows, resonance plasmon, nanoshell, Drude model, nanoparticle