Effect of Li+ ions in the luminescence study of ZrO₂: Eu nano-crystal materials

Nano-crystal materials ZrO₂: Eu (5%) and ZrO₂: Eu (5%)/Li (2%) were prepared using chemical co-precipitation method in water medium. The materials were annealed at 1000° C for 1 hour and then grained into powder form. The materials were characterized by recording XRD, showing monoclinic and tetragonal phases and their estimated crystalline sizes were approximated as recorded by TEM images. And, photoluminescence studies of as prepared materials were carried out at room temperature.