Development of SnS nanocrystals and tuning of parameters for use as spectral selective photoabsorbers

Abstract

Abstract SnS nanocrystals have been grown using solution method from vigorously stirred solution on filtration (S1) and direct solidification under constant temperature (S2). The work demonstrates comparison in terms of structure, optical, composition and morphology for the determination of nanocrystal characteristics. Both the synthesised samples possess herzenbergite orthorhombic SnS phase with crystallinity ∼ 31 and 69 nm determined from X-ray diffraction data. The structural results exhibit changes in most significant peak (MSP), lattice parameters, volume, axis strain, dislocation density and number of crystallites in the form of a deformed nanostructure due to the presence of inorganic-organic hybrid. The changes in optical parameters corroborated well with the PL results and exhibit high photosensitive character. Morphology and composition of the synthesised nanocrystals have also found in aggregate to structural and optical results. Besides this, FTIR spectrum exhibit strong and weak SnS characteristic peaks alongwith OH and H-O-H vibrations. In summary, synthesised SnS nanocrystals possess sharp transition with high photo absorption that can be employed significantly for various photonic applications.