On the band structure of Sb2Te3–xSex (0 ≤ x ≤ 0.1): Kinetic and optical data

Resumo

The specific features of experimental data on kinetic phenomena in p-type A₂^V B₃^VI materials and the results of calculations related to these phenomena in the one- and two-band models are discussed. It is possible to correlate the calculations with the experiment in the two-band model with consideration for interband hole scattering and to estimate the parameters of their experimental spectrum. The reflectance spectra of p-Sb₂Te_3–xSe_x crystals in the range 400–7000^–1 are reported. The spectra are approximated in the context of the Drude–Lorentz theory which takes into account the plasma vibrations of holes.