Synthesis and Characterization of SnS Flake-Like Microcrystals with a Microwave Hydrothermal Processing

Pei Pei Zhang; Jian Feng Huang; Li Yun Cao; Jian Peng Wu

doi:10.4028/www.scientific.net/KEM.512-515.219

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 512-515Synthesis and Characterization of SnS Flake-Like...

Synthesis and Characterization of SnS Flake-Like Microcrystals with a Microwave Hydrothermal Processing

Abstract:

SnS powders were obtained by the microwave hydrothermal (M-H) systhesis technique using SnCl2•2H2O and CH3CSNH2 as precursors. By changing the M-H processing temperature, SnS crystallites with differernt sizes and morphologies could be achieved. The phase compositions, microstructures and optical properties of the-prepared SnS crystallites were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), UV-Vis spectroscopy and photoluminescence spectroscopy (PL). Results show that the SnS powders present a herzenbergite-type orthorhombic structure and free of secondary phases. FE-SEM images indicate that the composite crystals are stacked with smaller flake-like crystals. By UV-Vis spectra analysis, the optical band gap of SnS powders is about 1.48 eV, which shows a blue shift of 0.18 eV compared to the bulk SnS. A near-infrared photoluminescence (PL) emission (830 nm) at room temperature is verified for the SnS powders when exited by 551 nm wavelength.

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Key Engineering Materials (Volumes 512-515)

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219-222

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https://doi.org/10.4028/www.scientific.net/KEM.512-515.219

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Online since:

June 2012

Authors:

Pei Pei Zhang, Jian Feng Huang, Li Yun Cao, Jian Peng Wu

Keywords:

Flake-Like, Microwave Hydrothermal, Optical Property, SnS Microcrystals

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