Физика Низких Температур: Том 47, Выпуск 5 (Май 2021), c. 462-467 ( к оглавлению , назад )
Exciton absorption spectra of thin films of RbCu2Cl3 and Rb2Cu3Cl5 ternary compounds
E. N. Kovalenko
Kharkiv National University of Radio Electronics, Kharkiv 61166, Ukraine
O. N. Yunakova and N. N. Yunakov
Kharkiv National University, Kharkiv 61022, Ukraine
Received February 15, 2021, published online March 26, 2021
The absorption spectra of RbCu2Cl3 and Rb2Cu3Cl5 thin films w ere studied in the 2–6 eV spectral and 90–450 K temperature ranges. The localization of excitons in CuCl43- structural elements of crystal lattice of compounds,three-dimensional nature of excitons in RbCu2Cl3 and two-dimensional nature of excitons in Rb2Cu3Cl5 were established. The exciton spectra of RbCu2Cl3 and Rb2Cu3Cl5 thin films were interpreted based on the transitions in the Cu+ ion.
Key words:  thin films, absorption spectra, excitons.