Synthesis of Cu 2Zn xSn ySe 1+x+2y nanocrystals with wurtzite-derived structure

Xianzhong Lin, Jaison Kavalakkatt, Kai Kornhuber, Daniel Abou-Ras, Susan Schorr, Martha Ch Lux-Steiner, Ahmed Ennaoui

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The most reported stable crystal structure of Cu 2ZnSnS 4 and Cu 2ZnSnSe 4 (CZTSe) is kesterite, which is derived from the ternary chalcopyrite structure. However, by controlling the reaction conditions, we found that the structure and composition of the CZTSe nanocrystals (NCs) can be tuned. This can be achieved by using a simple hot injection approach. The structural properties of the CZTSe NCs were characterized by powder X-ray diffraction (PXRD), Raman spectroscopy and transmission electron microscopy. The energy dispersive X-ray spectroscopy confirms the stoichiometry of CZTSe NCs. The optical band gap of the NCs is found to be around 1.38 eV, as estimated from UV-Vis absorption spectroscopy. PXRD studies show that the obtained CZTSe NCs occurring in three structurally different phases (tetragonal kesterite type, hexagonal wurtzite type and orthorhombic wurtz-stannite type) are converted to the kesterite structure by annealing at 540 °C for 30 min under an Se-vapour atmosphere.

Original languageEnglish
Pages (from-to)9894-9898
Number of pages5
JournalRSC Advances
Volume2
Issue number26
DOIs
Publication statusPublished - 28 Oct 2012
Externally publishedYes

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Nanocrystals
X ray powder diffraction
Optical band gaps
Ultraviolet spectroscopy
Absorption spectroscopy
Stoichiometry
Raman spectroscopy
Structural properties
Crystal structure
Vapors
Annealing
Transmission electron microscopy
Chemical analysis

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Lin, X., Kavalakkatt, J., Kornhuber, K., Abou-Ras, D., Schorr, S., Lux-Steiner, M. C., & Ennaoui, A. (2012). Synthesis of Cu 2Zn xSn ySe 1+x+2y nanocrystals with wurtzite-derived structure. RSC Advances, 2(26), 9894-9898. https://doi.org/10.1039/c2ra21293e

Synthesis of Cu 2Zn xSn ySe 1+x+2y nanocrystals with wurtzite-derived structure. / Lin, Xianzhong; Kavalakkatt, Jaison; Kornhuber, Kai; Abou-Ras, Daniel; Schorr, Susan; Lux-Steiner, Martha Ch; Ennaoui, Ahmed.

In: RSC Advances, Vol. 2, No. 26, 28.10.2012, p. 9894-9898.

Research output: Contribution to journalArticle

Lin, X, Kavalakkatt, J, Kornhuber, K, Abou-Ras, D, Schorr, S, Lux-Steiner, MC & Ennaoui, A 2012, 'Synthesis of Cu 2Zn xSn ySe 1+x+2y nanocrystals with wurtzite-derived structure', RSC Advances, vol. 2, no. 26, pp. 9894-9898. https://doi.org/10.1039/c2ra21293e
Lin X, Kavalakkatt J, Kornhuber K, Abou-Ras D, Schorr S, Lux-Steiner MC et al. Synthesis of Cu 2Zn xSn ySe 1+x+2y nanocrystals with wurtzite-derived structure. RSC Advances. 2012 Oct 28;2(26):9894-9898. https://doi.org/10.1039/c2ra21293e
Lin, Xianzhong ; Kavalakkatt, Jaison ; Kornhuber, Kai ; Abou-Ras, Daniel ; Schorr, Susan ; Lux-Steiner, Martha Ch ; Ennaoui, Ahmed. / Synthesis of Cu 2Zn xSn ySe 1+x+2y nanocrystals with wurtzite-derived structure. In: RSC Advances. 2012 ; Vol. 2, No. 26. pp. 9894-9898.
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