Optical phonons in the kesterite Cu2ZnGeS4 semiconductor: Polarized Raman spectroscopy and first-principle calculations

Guk Maxim; Litvinchuk A.; Levcenko Sergiu; Valakh M.; Bodnar Ivan V.; Dzhagan Volodymyr; Izquierdo-Roca Víctor; Arushanov Ernest; Perez-Rodriguez Alejandro

Conţinutul numărului revistei

Articolul precedent

Articolul urmator

225

SM ISO690:2012

GUK, Maxim, LITVINCHUK, A., LEVCENKO, Sergiu, VALAKH, M., BODNAR, Ivan V., DZHAGAN, Volodymyr, IZQUIERDO-ROCA, Víctor, ARUSHANOV, Ernest, PEREZ-RODRIGUEZ, Alejandro. Optical phonons in the kesterite Cu2ZnGeS4 semiconductor: Polarized Raman spectroscopy and first-principle calculations. In: RSC Advances, 2016, nr. 6(16), pp. 13278-13285. ISSN 2046-2069. DOI: https://doi.org/10.1039/c5ra26844c

EXPORT metadate:
Google Scholar
Crossref
CERIF

DataCite
Dublin Core

RSC Advances

Numărul 6(16) / 2016 / ISSN 2046-2069

Optical phonons in the kesterite Cu₂ZnGeS₄ semiconductor: Polarized Raman spectroscopy and first-principle calculations

DOI:https://doi.org/10.1039/c5ra26844c

Pag. 13278-13285

Guk Maxim¹², Litvinchuk A.³, Levcenko Sergiu⁴, Valakh M.⁵, Bodnar Ivan V.⁶, Dzhagan Volodymyr⁵⁷, Izquierdo-Roca Víctor¹, Arushanov Ernest², Perez-Rodriguez Alejandro¹⁸

¹ Catalonia Institute for Energy Research (IREC), Barcelona,
² Institute of Applied Physics, Academy of Sciences of Moldova,
³ University of Houston, Houston,
⁴ Helmholtz-Centre Berlin for Materials and Energy,
⁵ V.E. Lashkaryov Institute of Semiconductor Physics of the National Academy of Science of Ukraine,
⁶ Belarusian State University of Informatics and Radioelectronics,
⁷ Technische Universität Chemnitz,
⁸ University of Barcelona

Disponibil în IBN: 13 septembrie 2022

Descarcă PDF

Rezumat

A comprehensive vibrational analysis of the kesterite Cu₂ZnGeS₄ semiconductor (space group I4) is reported, which includes experimental in-plane rotation polarized Raman scattering measurements from the (1 0 1)-single crystal facet as well as first principle lattice dynamic calculations. 17 out of the 27 expected vibrational modes of the kesterite structure are unambiguously identified. Raman scattering measurements performed under resonant excitation conditions show a pronounced enhancement of the longitudinal optical components of the polar modes. The appearance of several additional lines in the Raman spectra have been interpreted as being due to the presence of inclusions of Cu₂ZnGeS₄ polymorph with the P42c lattice symmetry, which differs from the kesterite by cation sublattice arrangement.

Cuvinte-cheie
Crystal lattices, Raman scattering, single crystals