Luminescence Spectroscopy of Eu-doped (Ca,Sr)TiO[sub 3] Nanocrystals Prepared by Using Sonochemical Method

Perovskite‐type compounds (ABO3) of (Ca,Sr)TiO3 doped with trivalent europium (Eu3+) were synthesized by sonochemical techniques. Powder X‐ray diffraction measurement on (Ca,Sr)TiO3 were used to identify the perovskite crystal structure. The photoluminescence property in (Ca,Sr)TiO3 with europium substitution several atoms in the host lattice was also studied. Further, the photoluminescence spectra were taken at room temperature. The structural difference between fourth kinds of doped samples with different heating temperatures accounts for the intensification of the luminescence intensity. The presented measurements monitor the emission wavelengths of the Eu3+ with emission peaks at 593, 615 and 700 nm. The obtained results were discussed with respect to developed preparaton method.