4.8 Article

Wurtzite-Chalcopyrite Polytypism in CuInS2 Nanodisks

Journal

CHEMISTRY OF MATERIALS
Volume 21, Issue 9, Pages 1962-1966

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/cm900363w

Keywords

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Funding

  1. National Science Foundation through their STC program [CHE-9876674]
  2. Robert A. Welch Foundation
  3. Air Force Research Laboratory [FA8650-07-2-5061]

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Monodisperse CuInS2 nanodisks were synthesized by heating metal chlorides and thiourea in oleylamine. X-ray diffraction showed the predominant phase to be wurtzite (hexagonal) CuInS2 instead of chalcopyrite (tetragonal) or compositionally disordered sphalerite (cubic). High-resolution transmission electron microscopy, however, revealed polytypism in the nanodisks, with the wurtzite phase interfaced with significant chalcopyrite domains.

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