title: Low-temperature synthesis of CaTiO3 nanocrystals doped with Pr3+ ions and their luminescence.
abstract: CaTiO3:Pr3+ nanocrystals were synthesized by solvothermal method. The as-prepared powders crystallized to the pure orthorhombic phase after calcination at 600 degrees C in air for 3 hours. CaTiO3:Pr3+ nanocrystals are petaline in shape with the decrease of the reactant concentration. The corresponding bulk CaTiO3:Pr3+ was synthesized by high temperature solid-state reaction. All the products were systematically characterized by powder X-ray diffraction (XRD), infrared spectroscopy (IR), field emission-scanning electron microscopy (FE-SEM), diffuse reflectance spectra (DRS), photoluminescence (PL) and photoluminescent excitation spectra (PLE). The luminescence mechanism and the size dependence of their fluorescence properties are also discussed.
authors.affiliation: Department of Physics, Pukyong National University, Busan 608-737, South Korea.
authors.forename: Zuoling
authors.initials: Z
authors.lastname: Fu
authors.forename: Byung Kee
authors.initials: BK
authors.lastname: Moon
authors.forename: Hyun Kyoung
authors.initials: HK
authors.lastname: Yang
authors.forename: Jung Hyun
authors.initials: JH
authors.lastname: Jeong