Exciton spectra of CuInSe2 crystals
The excitonic reflectivity spectra and the wave-length derivative reflection spectra have been investigated for CuInSe2 crystals. The n =1, n =2 and n = 3 states of A, B and C exciton series are revealed and the contours of exciton lines (n=1) are calculated. The exciton binding energies and ex...
Guardado en:
| Autor principal: | |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2005
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/beb8dd27db9e470787eece3e79c2a0fa |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | The excitonic reflectivity spectra and the wave-length derivative reflection spectra have
been investigated for CuInSe2 crystals. The n =1, n =2 and n = 3 states of A, B and C exciton
series are revealed and the contours of exciton lines (n=1) are calculated. The exciton binding
energies and exact values of the band gaps of all three intervals Γ7 (V1) – Γ6 (C1), Γ6 (V2) – Γ6
(C1), Γ7 (V3) – Γ6 (C1) have been also calculated. Data of the splitting due to crystal-field and
spin-orbit interaction are determined. The parameters of excitons and energy bands for the
region of interband interval minimum have been determined as well. The band model in the Γ,
N and T points of the Brillouin zone is proposed.
|
|---|