Kovalenko, E. N.Yunakova, O. N.Yunakov, N. N.2024-11-282024-11-282024Кovalenko E. N., Yunakova O. N., Yunakov N. N. Exciton absorption spectrum of thin films of (CsxK1-x)2CuCl3 solid solutions / E. N. Кovalenko, O. N. Yunakova, N. N. Yunakov // Functional materials. - 2024. - V.3 1 (1). - P. 13-17.1027-5495https://openarchive.nure.ua/handle/document/29329The absorption spectra of thin films of (CsxK1-x)2CuCl3 0≤х≤1 (T=90K) solid solutions in the spectral range 2–6 eV were studied. According to the analysis of the spectra, the formation of two types of compounds was observed and studied: 1) compounds at x=0 and in the range of 0.4≤х≤1 which are isostructural to Cs2CuCl3 and K2CuCl3; 2) compounds at x=0.2 which are isostructural to CsCu2Cl3. The excitonic spectra of (CsxK1-x)2CuCl3 0≤х≤1compounds are caused by transitions in the Cu+ ion. The linear concentration dependences of the spectral position of exciton bands in both types of compounds confirm the localization of excitons in sublattices containing Cu+ ions.ukthin filmsabsorption spectraexcitonArticle