Luminous properties of color tunable strontium thio-selenide phosphors for LEDs application

Hong Jeong Yu, Wonkeun Chung, Hyunchul Jung, Sun Hee Park, Sung Hyun Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this study, alkali earth thio-selenide phosphor, SrS xSe 1-x:Eu 2+ , was prepared using the conventional solid state reaction method. The synthesized phosphor displayed a broad excitation band that was suitable for blue or near UV LED applications and emitted light at various wavelengths (563-605 nm) with different chemical compositions. Like the case of other alkali phosphors, Zn 2+ substitution for Sr 2+ greatly enhanced the emission of this thio-selenide phosphor. The LED fabricated with the synthesized phosphor produced white light using a blue LED with a CIE-1931 coordinate, T c and R a of (0.3199, 0.3107), 6577 K and 51.6, respectively.

Original languageEnglish
Pages (from-to)2690-2692
Number of pages3
JournalMaterials Letters
Volume65
Issue number17-18
DOIs
Publication statusPublished - 2011 Sep 1

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Keywords

  • Europium
  • Light emitting diodes
  • Luminescence
  • Phosphors
  • Thio-selenide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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