Tin sulfide nanoparticles by pulsed laser ablation in liquid

Tin sulfide nanoparticles were synthesized by pulsed laser ablation of a tin sulfide (SnS) target in different liquid media using the 532 and 1064 nm output wavelengths from a pulsed (10 ns, 10 Hz) Nd:YAG laser. Analysis of the morphology, crystalline structure, chemical state and elemental composition, optical absorption and luminescent properties were done using transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–Vis absorption spectroscopy and room temperature photoluminescence spectroscopy. TEM analysis demonstrated that change in the liquid medium and laser energy fluence resulted in tin sulfide nanoparticles with different morphologies. XRD analysis confirmed the crystallinity of SnS nanoparticles obtained. XPS results confirmed the compositions and chemical states of these nanoparticles. The optical absorption spectra and band gap energies for SnS nanocolloids were evaluated. These SnS nanocolloids showed emissions in the blue–green region of the visible range.