Rapid facile synthesis of Cu2ZnSnS4 nanocrystals

B. D. Chernomordik, A. E. Béland, N. D. Trejo, A. A. Gunawan, D. D. Deng, K. A. Mkhoyan, Eray Aydil

Research output: Contribution to journalArticle

Abstract

Cu2ZnSnS4 (CZTS) nanocrystals were synthesized via thermolysis of single-source cation and sulfur precursors copper, zinc and tin diethyldithiocarbamates. The average nanocrystal size could be tuned between 2 nm and 40 nm, by varying the synthesis temperature between 150 °C and 340 °C. The synthesis is rapid and is completed in less than 10 minutes. Characterization by X-ray diffraction, Raman spectroscopy, transmission electron microscopy and energy dispersive X-ray spectroscopy confirm that the nanocrystals are nominally stoichiometric kesterite CZTS. The ∼2 nm nanocrystals synthesized at 150 °C exhibit quantum confinement, with a band gap of 1.67 eV. Larger nanocrystals have the expected bulk CZTS band gap of 1.5 eV. Several micron thick films deposited by drop casting colloidal dispersions of ∼40 nm CZTS nanocrystals were crack-free, while those cast using 5 nm nanocrystals had micron-scale cracks.

Original languageEnglish (US)
Pages (from-to)10389-10395
Number of pages7
JournalJournal of Materials Chemistry A
Volume2
Issue number27
DOIs
StatePublished - Jul 21 2014

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Nanocrystals
Energy gap
Cracks
Ditiocarb
Thermolysis
Quantum confinement
Tin
Cu2ZnSnS4
Dispersions
Sulfur
Thick films
Raman spectroscopy
Cations
Zinc
Copper
Casting
Positive ions
Transmission electron microscopy
X ray diffraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Chernomordik, B. D., Béland, A. E., Trejo, N. D., Gunawan, A. A., Deng, D. D., Mkhoyan, K. A., & Aydil, E. (2014). Rapid facile synthesis of Cu2ZnSnS4 nanocrystals. Journal of Materials Chemistry A, 2(27), 10389-10395. https://doi.org/10.1039/c4ta01658k

Rapid facile synthesis of Cu2ZnSnS4 nanocrystals. / Chernomordik, B. D.; Béland, A. E.; Trejo, N. D.; Gunawan, A. A.; Deng, D. D.; Mkhoyan, K. A.; Aydil, Eray.

In: Journal of Materials Chemistry A, Vol. 2, No. 27, 21.07.2014, p. 10389-10395.

Research output: Contribution to journalArticle

Chernomordik, BD, Béland, AE, Trejo, ND, Gunawan, AA, Deng, DD, Mkhoyan, KA & Aydil, E 2014, 'Rapid facile synthesis of Cu2ZnSnS4 nanocrystals', Journal of Materials Chemistry A, vol. 2, no. 27, pp. 10389-10395. https://doi.org/10.1039/c4ta01658k
Chernomordik BD, Béland AE, Trejo ND, Gunawan AA, Deng DD, Mkhoyan KA et al. Rapid facile synthesis of Cu2ZnSnS4 nanocrystals. Journal of Materials Chemistry A. 2014 Jul 21;2(27):10389-10395. https://doi.org/10.1039/c4ta01658k
Chernomordik, B. D. ; Béland, A. E. ; Trejo, N. D. ; Gunawan, A. A. ; Deng, D. D. ; Mkhoyan, K. A. ; Aydil, Eray. / Rapid facile synthesis of Cu2ZnSnS4 nanocrystals. In: Journal of Materials Chemistry A. 2014 ; Vol. 2, No. 27. pp. 10389-10395.
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