期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 76, 期 -, 页码 45-50出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2014.08.003
关键词
Semiconductor; Ab initio calculations; Raman spectroscopy; Electronic structure; Optical properties
资金
- Brazilian Research Agency CAPES (Rede NanoBioTec)
- Brazilian Research Agency CNPq (INCT-Nano(Bio) Simes)
- Brazilian Research Agency CNPq (Casadinho/Procad)
- Brazilian Research Agency CNPq (PNPD)
We have investigated the physical properties of the cadmium hydroxide polymorph gamma-Cd(OH)(2) using density-functional theory (DFT) considering both the local density and generalized gradient approximations, LDA and GGA, respectively. The electronic band structure, the electronic density of states, the dielectric function and the optical absorption are calculated. A comparison reveals good agreement of the calculated lattice parameters with experimental results. A direct band gap E(Gamma -> Gamma) = 1.70 eV (1.53 eV) was obtained within the GGA (LDA) level of calculation. The vibrational normal modes as well as the Raman and infrared spectra of gamma-Cd(OH)(2) were obtained and assigned. (C) 2014 Elsevier Ltd. All rights reserved.
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