title: Luminescence characteristics of Pr3+ ion doped CaTiO3 nanopowder phosphors synthesized by solvothermal method.
abstract: In display applications, each displays technique needs different phosphors according to its applications. So, in this paper, nano-sized red emitting CaTiO3:Pr3+ powder phosphors were prepared by solvothermal reaction method. The phase purity and the structure of the phosphors were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM). The particles show the spherical morphology, which indicates the good luminescent characteristics. The luminescent properties of CaTiO3:Pr3+ powder phosphors have been carried out by the measurement of their phototluminescence (PL) and phototluminescence excitation (PLE) spectra. The PL spectra shows the strong red emission due to 1D2 --> 3H4 transition. The emissions of intra-4f transitions from the excited states (1D2) to the ground state (3H4) of Pr3+ are mainly observed around from 612 to 618 nm. The effect of the Pr3+ concentration on their photoluminescent properties was investigated extensively. These luminescent powders are expected to find potential applications such as optical display systems.
authors: Department of Physics, Pukyong National University, Busan 608-737, Korea.
authors: Jong Won
authors: JW
authors: Chung
authors: Hyun Kyoung
authors: HK
authors: Yang
authors: Byung Kee
authors: BK
authors: Moon
authors: Byung Chun
authors: BC
authors: Choi
authors: Jung Hyun
authors: JH
authors: Jeong
authors: Jung Hwan
authors: JH
authors: Kim