Raman spectra of the ordered vacancy compounds CuIn3Se5 and CuGa3Se5
- 27 July 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (4) , 441-443
- https://doi.org/10.1063/1.121893
Abstract
The optical vibrational modes of the ordered vacancy compounds CuIn3Se5 and CuGa3Se5 have been obtained by Raman spectra at various temperatures. The totally symmetric A1 mode appears around 155 and 167 cm−1 in CuIn3Se5 and CuGa3Se5, respectively. All the lines observed, except the B1 modes, present a reduction in their frequencies by about 10% as compared to the corresponding values in the CuInSe2 and CuGaSe2 chalcopyrites. This is due to the presence in these compounds of an array of vacancies occupying particular sites in the cation sublattice. These tend to relax the stretching forces thus reducing the vibrational frequencies.Keywords
This publication has 10 references indexed in Scilit:
- Temperature dependence of the fundamental absorption edge in CuIn3Se5Journal of Applied Physics, 1998
- Raman Spectra of Ordered Vacancy Compounds in the Cu-In-Se SystemJapanese Journal of Applied Physics, 1997
- Preparation and characterization of Cu(In1−xGax)3Se5 thin filmsApplied Physics Letters, 1995
- Characterization of heteroepitaxial CuIn3Se5 and CuInSe2 layers on Si substratesApplied Physics Letters, 1994
- Ordered vacancy compound CuIn3Se5 on GaAs (100): Epitaxial growth and characterizationApplied Physics Letters, 1994
- Polarized micro-Raman spectra in CuGaSe2Solid State Communications, 1992
- Lattice vibrations of CuInSe2 and CuGaSe2 by Raman microspectrometryJournal of Applied Physics, 1992
- Raman spectra ofPhysical Review B, 1992
- The temperature dependence of the optical phonon linewidths and frequencies in ZnSe and ZnTeSolid State Communications, 1970
- Vibrational Modes in ZnSiPhysical Review B, 1970