Abstract
This work reports the investigation of plasmonic effects in tin disulfide (SnS2) nanostructured films obtained by the close-spaced vacuum sublimation method (CSS). Structural properties and phase composition of SnS2 films were studied with the help of field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), X-ray diffraction (XRD) and Raman spectroscopy. Surface morphology and optical polarization properties of SnS2 films deposited at different substrate temperature were investigated by modulation-polarization spectroscopy (MPS). Surface plasmon resonances (SPR) with localized and polariton types were observed by measuring of angular and spectral characteristics of polarization difference. Radiative and non-radiative modes of surface plasmons have been analyzed at different light incident angles. The influence of surface morphology on resonant parameters of different types of SPR was studied. Correlation between the experimental results and theoretical calculations was established. The refractive and absorption indexes were found for the SnS2 films at different substrate temperature.
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