Experimental and numerical results in hydrothermal synthesis of CuInS 2 compound semiconductor nanocrystals

Terezia Nyari, Paul Barvinschi, Radu Bǎieş, Paulina Vlǎzan, Floricica Barvinschi, Imre Dékány

Research output: Contribution to journalConference article

24 Citations (Scopus)

Abstract

Nanocrystals of CuInS2 ternary chalcogenide semiconductors were prepared by a one-step synthesis and crystallization method using the hydrothermal technique. Different precursors (CuCl2, CuCl - as Cu sources; In metal as In source, CS2, S powder - as S sources), different autoclaving conditions (filling rate: 80-90%; temperature: 150-250 °C; reaction time: 5-90 h) and water as solvent were used. The precipitated products were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). XRD spectra reveal the presence of tetragonal chalcopyrite CuInS2, in some conditions single-phase samples are obtained. Electron microscopy images indicate that the particles are nanosized, having different morphologies, with dimensions ranging from 5 to 100 nm. The presence of aggregated "secondary particles" is also observed in the SEM images. Finally, the formation of nanocrystals in homogeneous and inhomogeneous thermal fields was studied. FLUENTTM software was used for the simulation of inhomogeneous global thermal field.

Original languageEnglish
Pages (from-to)e2383-e2387
JournalJournal of Crystal Growth
Volume275
Issue number1-2
DOIs
Publication statusPublished - Feb 15 2005

Keywords

  • A1. Computer simulation
  • A2. Hydrothermal synthesis
  • B1. Nanocrystals
  • B1. Sulfides
  • B2. Semiconducting ternary compounds
  • B3. Solar cells

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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