Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1812082 | Physica B: Condensed Matter | 2011 | 4 Pages |
Abstract
We investigate the electronic structure for Cu2CdGeSe4 in stannite structure with the first-principles method. This crystal is the direct band gap compound. In addition, the dielectric function, absorption coefficient, reflectivity, and energy-loss function are studied using the density functional theory within the generalized gradient approximation. We discuss the optical transitions between the valence bands and the conduction bands in the spectra of the imaginary part of the dielectric function at length. We also find a very high absorption coefficient and wide absorption spectrum for this material. The prominent structures in the spectra of reflectivity and energy-loss function are discussed in detail.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Dan Li, Furi Ling, Zhenye Zhu, Xinghong Zhang,