Cu2ZnSbS4 Synthesized

  • Author: ChemistryViews.org
  • Published: 10 February 2021
  • Copyright: Wiley-VCH GmbH
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Cu<sub>2</sub>ZnSbS<sub>4</sub> Synthesized

Compounds of the type A2IBIICIVX4 constitute a well-known family of materials with a large number of different members (A = Cu,Ag,Li,Na; B = Mn,Fe,Co,Ni,Zn,Cd,Hg,Mg,Ca,Sr,Ba,Pb,Eu; C = Si,Ge,Sn; X = S,Se,Te). These compounds have applications as tunable semiconductors, e.g., in solar cell absorbers or as photocatalysts for water splitting. In compounds with A = Cu, copper usually has the oxidation state +I. Replacing the CIV component in such copper compounds with a trivalent cation, such as Sb3+, might result in mixed-valent Cu+/Cu2+ species.


Martin Lerch, Technical University of Berlin, Germany, and colleagues have investigated this type of replacement and substituted the tin in Cu2ZnSnS4 with antimony. They synthesized a new member of the A2IBIICIVX4 family, Cu2ZnSbS4. The team prepared this compound by ball milling the corresponding binary sulfides, i.e., CuS, ZnS, Sb2S3, as well as Cu together. After milling, the samples were annealed at 250 °C in an H2S atmosphere.


The product was characterized by X-ray powder diffraction. The team found that Cu2ZnSbS4 crystallizes in a stannite-type structure in space group I42m. The team measured the magnetic properties of the compound to check for mixed-valent copper, but found no evidence for the presence of Cu2+ or Sb3+. Instead, theoretical calculations and the results of 121Sb Mössbauer spectroscopy indicate remarkably strong covalent SbV–S and Sb–Sb bonding.


 

 

Article Views: 5949

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH