Abstract
A new binary (1-x)Bi1/2Na1/2TiO3+xHo1/2Na1/2TiO3 solid solution system was synthesized by a simple chemical method. The crystal structure of (1-x)Bi1/2Na1/2TiO3+xHo1/2Na1/2TiO3 system was characterized by X-ray diffraction, showing that the crystal structure of the system followed the rhombohedral structure with symmetry of Bi1/2Na1/2TiO3 materials. The distortion lattice parameters of Bi1/2Na1/2TiO3 resulted from the random distribution of Ho impurity cations into the host lattice of Bi1/2Na1/2TiO3 materials to form the solution. The direct optical bandgap energy of Bi1/2Na1/2TiO3 materials was slightly changed in the range of 3.04–2.99 eV after the addition of Ho1/2Na1/2TiO3. The strong enhancement in photoemission properties of Bi1/2Na1/2TiO3 materials was related to electron transition from 5S2 to 5I8 level of Ho3+ cations randomly incorporated with the host Bi1/2Na1/2TiO3 lattice. We expected our work to open a new simple way to integrate the photoluminescence properties in lead-free ferroelectric materials for further smart optoelectronic devices application.
Published Version
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