Articles
  • Novel yellowish white-emitting Eu2+-activated phosphate phosphor based on Rb2Ba3P4O14
  • Kazuma Sugimotoa,1, Takuya Hasegawaa,1, Sun Woog Kima,c,*, Kazuyoshi Uematsub, Kenji Todaa,* and Mineo Satob
  • a Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-nocho, Niigata 950-2181, Japan b Department of Chemistry and Chemical Engineering, Niigata University, 8050 Ikarashi 2-nocho, Niigata 950-2181, Japan c Department of Nanotechnology and Advanced Material Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea
Abstract
Eu2+-doped Rb2Ba3P4O14 phosphors were synthesized in a single phase form by a conventional solid state reaction method and their optical properties were characterized. These phosphors showed broad optical absorption bands that can cover the UV and near-UV region, and exhibited a narrow deep-blue emission and broad reddish-yellow emission with peaks at 423 nm and 550 nm, respectively. The highest reddish-yellow emission intensity was obtained for Rb2(Ba0.99Eu0.01)3P4O14.

Keywords: White LED, Rb2Ba3P4O14, Reddish-yellow emission.

This Article

  • 2016; 17(5): 401-404

    Published on May 31, 2016