Title :
Exciton-phonon spectra of CuGaxIn1-xSe2 crystals
Author :
Syrbu, N.N. ; Nyari, T. ; Bogdanash, M. ; Tezlevan, V.E.
Author_Institution :
Tech. Univ. of Moldova, Chisinau
Abstract :
In the present paper the excitonic reflectivity and the wavelength derivative reflection (WDR) study of CuGaxInx-1Se 2 solid solutions are presented. The states n=1, n=2 and n=3 of A, B, C exciton series are determined. The exciton binding energies and more exact values of the band gaps of all three intervals (Γ 7V1-Γ6C1, Γ6V2-Γ6C1, Γ7V3-Γ6C1) are calculated hereby. The magnitudes of the splitting due to crystal-field and spin-orbit interaction are determined as well
Keywords :
copper compounds; crystal field interactions; energy gap; gallium compounds; indium compounds; phonon-exciton interactions; reflectivity; spin-orbit interactions; ternary semiconductors; CuGaxIn1-xSe2 crystal; CuGaInSe2; band gap; crystal field splitting; exciton binding energy; exciton-phonon spectra; excitonic reflectivity; solid solution; spin-orbit interaction; wavelength derivative reflection; Crystalline materials; Crystallization; Crystals; Excitons; Mirrors; Optical reflection; Photonic band gap; Reflectivity; Research and development; Solids;
Conference_Titel :
Semiconductor Conference, 1999. CAS '99 Proceedings. 1999 International
Conference_Location :
Sinaia
Print_ISBN :
0-7803-5139-8
DOI :
10.1109/SMICND.1999.810440
