Pressure dependence of electronic and optical properties of Zinc-blende GaN, BN and their B<sub>0.25</sub>Ga<sub>0.75</sub>N alloy
Idioma
en
Article de revue
Este ítem está publicado en
Physica B: Condensed Matter. 2010, vol. 405, n° 3, p. 985-989
Elsevier
Resumen en inglés
First principles calculations are used to investigate the effect of hydrostatic pressure on the electronic and optical properties of zinc blende GaN, BN compounds and their B<sub>0.25</sub>Ga<sub>0.75</sub>N alloy. We have ...Leer más >
First principles calculations are used to investigate the effect of hydrostatic pressure on the electronic and optical properties of zinc blende GaN, BN compounds and their B<sub>0.25</sub>Ga<sub>0.75</sub>N alloy. We have applied the augmented plane-wave method with the local density approximation to the density functional theory. The refractive index and its variation with hydrostatic pressure are well described. Index of refraction and its pressure derivative and both imaginary and real parts of the dielectric function are identified in the photon energy range up to 40 eV. Resulting pressure coefficients of the main gap and of the refractive index are found in good agreement with experimental data.< Leer menos
Palabras clave en inglés
DFT
FP-LAPW
Wide gap semiconductors
Dielectric function
Refractive index
Hydrostatic pressure
Orígen
Importado de HalCentros de investigación