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Issue 7, 2016
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Synthesis and properties of nanocrystalline π-SnS – a new cubic phase of tin sulphide

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Abstract

We report on the synthesis of the newly discovered cubic phase of tin sulfide π-SnS and compare its properties to the well-known phase of tin sulfide, α-SnS. Shape control was achieved by the variation of synthesis parameters, resulting in cubic, rhombic dodecahedral and tetrahedral shapes of the π-SnS nanoparticles. X-ray diffraction provided authentication of the proposed model and refined determination of the lattice parameter a = 11.595 Å. Raman spectroscopy showed a substantial shift towards higher energies and peak splitting for π-SnS. Optical absorption spectroscopy indicated an indirect band gap of 1.53 eV, in good agreement with density functional theory (DFT) calculations indicating a band gap greater than that of α-SnS. DFT total energy calculations show that the π-SnS phase is energetically similar to α-SnS, and is significantly more stable than the hypothetical ideal rocksalt structure of SnS.

Graphical abstract: Synthesis and properties of nanocrystalline π-SnS – a new cubic phase of tin sulphide

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Publication details

The article was received on 03 Nov 2015, accepted on 23 Dec 2015 and first published on 05 Jan 2016


Article type: Paper
DOI: 10.1039/C5RA23092F
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Citation: RSC Adv., 2016,6, 5848-5855
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    Synthesis and properties of nanocrystalline π-SnS – a new cubic phase of tin sulphide

    R. E. Abutbul, E. Segev, L. Zeiri, V. Ezersky, G. Makov and Y. Golan, RSC Adv., 2016, 6, 5848
    DOI: 10.1039/C5RA23092F

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