Synthesis of a δ-SnS polymorph by electrodeposition

Jeffrey Brownson, Cécile Georges, Claude Lévy-Clément

Research output: Contribution to journalArticle

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Abstract

A new SnS polymorph (δ-SnS) has been obtained by cathodic electrodeposition on SnO2F: glass electrodes from warm (50-90°C) acidic solutions with tartaric acid. Characterizations of the as-deposited films by energy dispersive spectroscopy confirm a 1:1 Sn/S chemistry, X-ray diffraction shows that (δ-SnS has a primitive orthorhombic symmetry, and UV/vis spectroscopy shows a direct optical band gap of 1.05 eV. The structure was converted to the α-SnS phase (reduced a and c lattice constants, direct optical transition of 1.2 eV) following argon annealing above 270°C. Scanning electron microscopy images indicate pseudomorphic replacement of plate-like nanoparticles after annealing.

Original languageEnglish (US)
Pages (from-to)6397-6402
Number of pages6
JournalChemistry of Materials
Volume18
Issue number26
DOIs
StatePublished - Dec 26 2006

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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