Articles
  • A novel bluish green-emitting RbBaScSi3O9 : Eu2+ phosphor for white LEDs 
  • Takeshi Abea, Sun Woog Kima, Tadashi Ishigakia, 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
Abstract
A novel bluish green-emitting silicate phosphor, RbBaScSi3O9 : Eu2+, was synthesized by a conventional solid state reaction method. The RbBaScSi3O9 : Eu2+ phosphor can be excited by a near-UV and blue light irradiation and presents a bluish green band centered at 500 nm due to the allowed transition from 4f(6)5d(1) to 4f(7) of Eu2+. The maximum emission peak intensity was obtained at the composition of RbBaScSi3O9 : 10 mol% Eu2+, and the emission intensity was 13% compared with that of the commercial YAG phosphor.

Keywords: White LEDs; Bluish green-emitting phosphor; RbBaScSi3O9

This Article

  • 2014; 15(3): 181-184

    Published on Jun 30, 2014