Morphological And Thermal Properties Of β-sns_2 Crystals Grown By Spray Pyrolysis Technique

摘要

In this work, β-SnS_2 crystals were grown on glass substrates by the spray pyrolysis technique using tin chloride and thiourea precursors. Ex-situ characterizations of the crystals by means of scanning electron microscope, atomic force microscope and X-ray diffraction measurements have revealed a homogeneous and relatively smooth surface. The X-ray diffraction analysis of 910 nm thick β-SnS_2 layers grown at substrate temperature T_s=280 C revealed an obvious crystallographic orientation in the hexagonal phase with a strong (0 01) diffraction line. Microprobe analyses as well as X-ray photoelectron spectroscopy show the presence of undesirable phase of SnO_2. On the other hand, the photothermal properties have been studied, the thermal diffusivity was D_c=16.2 × 10~(-6)m~2s~(-1).