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Polarization dependent Raman spectroscopy characterization of kesterite Cu2ZnSnS4 single crystals

Published online by Cambridge University Press:  28 August 2013

D. O. Dumcenco
Affiliation:
Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
Y. P. Wang
Affiliation:
Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
S. Levcenco
Affiliation:
Helmholtz Zentrum Berlin f¨ur Materialien and Energie GmbH, D-14109 Berlin, Germany
K. K. Tiong
Affiliation:
Department of Electrical Engineering, National Taiwan Ocean University, Keelung 202, Taiwan
Y. S. Huang
Affiliation:
Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
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Abstract

The vibrational properties of kesterite Cu2ZnSnS4 (CZTS) single crystals were studied by polarization-dependent Raman scattering measurements. The CZTS crystals grown by chemical vapor transport technique using iodine trichloride as a transport agent consist of several mirror-like planes. The detailed analysis of the experimental spectra obtained from different planes allows determining the symmetry assignment of the observed Raman-active modes. The wavenumber values of Raman-active modes are compared with the results of recent theoretical calculations. The presented data are useful for examination of CZTS absorber films applied for solar cells to clarify the existence of structural or phase inhomogeneities.

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Articles
Copyright
Copyright © Materials Research Society 2013 

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References

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