A facile arrested precipitation method for synthesis of pure wurtzite Cu 2ZnSnS 4 nanocrystals using thiourea as a sulfur source

Chunya Li, Enna Ha, Wing Leung Wong, Cuiling Li, Kam Piu Ho, Kwok Yin Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

A facile route for the synthesis of wurtzite Cu2ZnSnS4(CZTS) nanocrystals was developed by an arrested precipitation method at 240 °C under simple reaction conditions with diethanolamine as the solvent and thiourea as sulfur source. The structure and morphology of the CZTS nanocrystals were characterized by X-ray diffraction and transmission electron microscopy. Control experiments demonstrated that CZTS nanocrystals which are purely wurtzite structure are readily obtained. The average diameter of the bulk CZTS products is found to be 10 ± 1.1 nm. The estimated direct bandgap energy is 1.56 eV, which indicates that the CZTS nanocrystals produced by this method possess promising applications in photovoltaic devices.
Original languageEnglish
Pages (from-to)3201-3205
Number of pages5
JournalMaterials Research Bulletin
Volume47
Issue number11
DOIs
Publication statusPublished - 1 Nov 2012

Keywords

  • A. Semiconductors
  • B. Chemical synthesis
  • C. Electron microscopy
  • C. Impedance spectroscopy
  • C. X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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