Abstract
The present work reports a simple route to prepare tin monosulfide semiconductor nanocrystals at ambient conditions. In the presence of complexant L-tartaric acid, SnCl2·2H2O was dissolved in ethylene glycol (EG) solution. After adjusting the solution pH value, sodium sulfide dissolved in EG was added into the solution. The solution changed from colorless into brown immediately and phase-pure SnS, which was confirmed by powder X-ray diffraction (XRD) was produced. The transmission electron microscopic (TEM) investigation shows very thin rectangular flake like SnS crystals of 10∼20 nm in size.
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