Miloslavsky, V.K.; Yanakova, O.N.; Kovalenko, E.N.
(Functional Materials, 2007)
The low-frequency electron absorption spectra in thin films of Cs(Ag₁₋ₓCuₓ)₂l₃ solid solutions have been investigated. At the fundamental band edge, two exciton bands A₀ and A₁ are observed, and the parameters thereof ...