Compositional behaviour of Urbach absorption edge and exciton-phonon interaction parameters in Cu_6PS_5I_1-xBr_x superionic mixed crystals (CROSBI ID 109669)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kranjčec, Mladen ; Studenyak, Ivan Petrovych ; Bilanchuk, Vasyl Vasylovych ; Dyordyaj Vasyl Sergeyovich ; Panko, Vasyl Vasylovych
engleski
Compositional behaviour of Urbach absorption edge and exciton-phonon interaction parameters in Cu_6PS_5I_1-xBr_x superionic mixed crystals
Temperature behaviour of optical absorption edge in Cu_6PS_5I_1-xBr_x mixed crystals is studied in the interval 77-325 K. It is shown that the absorption edge has Urbach shape in the 215-325 K temperature interval. The influence of temperature and compositional disorder on the Urbach absorption edge parameters is presented. The mechanism of the Urbach bundle formation and the effect of I->Br anionic substitution on the exciton-phonon interaction parameters is elucidated.
electronics materials; crystal fields; optical properties; phonons
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