Structural, luminescent, and electronic properties of ASnO3 (A = Ca, Sr, and Ba) with doping of Eu, Dy, and Er ions

This study investigated the structural and luminescent properties of rare earth (RE) ion (RE = Eu3+, Dy3+, and Er3+)-doped ASnO3 (ASnO3:RE), where A = Ca, Sr, and Ba. X-ray diffraction and Rietveld refinement analyses revealed that the lattice structures for A = Ca, Sr, and Ba were orthorhombic, pseudo-cubic, and cubic, respectively. As for the luminescent properties, the emission characteristic of each RE ion was clearly identified in our samples. Interestingly, it was commonly observed for all three RE ions that the emission intensities of the three RE ions were strongest and weakest in CaSnO3:RE and BaSnO3:RE, respectively. These results suggest the close relations of the luminescence properties of RE ions with the structural symmetry of the host material, ASnO3. In addition, the electronic structure and lattice dynamics of ASnO3:RE were investigated through theoretical calculations and optical measurements. The findings of this study provide important insights into the properties of RE ion-doped ASnO3 materials and their potential applications in optoelectronic devices.