|
This article is cited in 68 scientific papers (total in 68 papers)
CONDENSED MATTER
Optically induced structural transformation in disordered
kesterite Cu$_{2}$ZnSnS$_{4}$
M. Ya. Valakha, V. M. Dzhagana, I. S. Babichuka, X. Fontaneb, A. Perez-Rodriquezcb, S. Schorrde a Institute of Semiconductor Physics NAS, Kiev
b Catalonia Institute for Energy Research
c Universitat de Barcelona
d Helmholtz-Zentrum Berlin fur Materialien und Energie
e Freie Universitat Berlin, Institute of Geological Sciences
Abstract:
The kesterite-structured semiconductor Cu$_2$ZnSnS$_4$ is one of the most
promising compound for earth-abundant low-cost solar cells. One of the complex problem
on this way deals with its stoichiometry. In this work Raman spectra of Cu-rich
Cu$_2$ZnSnS$_4$ crystals are discussed in connection with the non-stoichiometric
composition and disordering within the cation sublattice of the kesterite. The shift of the
main $A$-peak from 338 to 331 cm$^{-1}$ and its broadening are attributed here
to transition from the kesterite (I$\bar{4}$-symmetry) to the disordered kesterite structure
(I$\bar{4}$2m-symmetry). It is shown that this transition may also be driven by an intense
light, which could stimulate transformation of Cu$^+$-ion to
Cu$^{2+}$-ions and facilitates
generation of Cu$_{\text{Zn}}$-defects on 2d-crystalographic positions.
Received: 26.06.2013
Citation:
M. Ya. Valakh, V. M. Dzhagan, I. S. Babichuk, X. Fontane, A. Perez-Rodriquez, S. Schorr, “Optically induced structural transformation in disordered
kesterite Cu$_{2}$ZnSnS$_{4}$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 98:5 (2013), 292–295; JETP Letters, 98:5 (2013), 255–258
Linking options:
https://www.mathnet.ru/eng/jetpl3507 https://www.mathnet.ru/eng/jetpl/v98/i5/p292
|
Statistics & downloads: |
Abstract page: | 175 | Full-text PDF : | 46 | References: | 33 | First page: | 8 |
|