Luminescence of Thin Films Based on Benzoate Derivatives of Terbium(III)

Thin films (~100 nm) of complexes of terbium(III) with 2-benzoylbenzoic, 2-(4-chlorobenzoyl)benzoic, and 3,4-diethoxybenzoic acids were obtained. By means of the data from electron and optical microscopy it was found that the complexes crystallize during formation a film. In order to improve the surface quality of the films, the complexes were doped into a poly-(N-vinylcarbazole) polymer matrix in ratios between 1:1 and 10:1. On the basis of the dependence of the integral luminescence intensity of the films on the mass ratio of the components it is supposed that the polymer takes part in luminescence excitation of the complexes.