Articles
  • Synthesis of Cα-α-SiAlON phosphor by one-step LPP-CRN method 
  • S. H. Moona, H. D. Lima, Y. H. Songa, M. K. Jungb, D. S. Joa, T. Masakia and D. H. Yoona,*
  • a School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, Korea b Hyosung Corporation, R&D Business Labs, Anyang 431-080, Korea
Abstract
C alpha-alpha-SiAlON : Eu2+ phosphors used for white LEDs were synthesized by one-step LPP-CRN method. Crystalline cellulose was used as a carbon source for synthesizing C alpha-alpha-SiAlON : Eu2+ phosphors. This phosphor emits yellow to orange light. This phosphor showed a single broad band emission attributed to the 5d --> f transition of Eu2+ ions. The synthesized yellow-to orange-emitting phosphors obtained without using excess carbon were crystallized much effectively and showed higher emission intensity. This phosphor obtained using the LPP-CRN method is expected to lead to the synthesis of other oxynitride phosphors and to be applied to white LEDs.

Keywords: C alpha-alpha-SiAlON : Eu2+ phosphor; White LEDs; LPP-CRN method

This Article

  • 2014; 15(4): 256-258

    Published on Aug 31, 2014