Exciton absorption spectrum of K₂CuCl₃ thin films Available to Purchase

The absorption spectrum of a thin $K 2 CuC l 3$ film was studied in the spectral region of 2–6 eV and the temperature range of 90–333 K. The analysis of the spectrum revealed the cationic nature of excitons in the $K 2 CuC l 3$ compound. The exciton spectrum of $K 2 CuC l 3$ is interpreted based on transitions in the Cu⁺ ion. The one-dimensional character of excitons in $K 2 CuC l 3$ is determined from the temperature dependence of the broadening of the Г(T) intense long-wave exciton band A.