Luminescent properties of RbSrPO4: Eu2+ phosphors for near-UV-based white-light-emitting diodes

Dong Kyun Yim, Hee Jo Song, Hee Suk Roh, Seung Joo Kim, Byung Suh Han, Yun Ho Jin, Hyun Seon Hong, Dong-Wan Kim, Kug Sun Hong

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5 Citations (Scopus)

Abstract

A phosphor based on a phosphate host matrix, RbSrPO4:Eu 2+ (RSP), was synthesized by a conventional solid-state reaction, and the crystal structure of the RSP host material was investigated by Rietveld refinement. The RSP phosphor could be excited efficiently by light in the 220-430 nm UV/Vis range and exhibited a highly intense emission peak at 450 nm. We discovered the effect of the activated Eu2+ concentration and the concentration quenching mechanism. Also, light absorption and quantum efficiency of the RSP phosphor were measured when excited in the near-UV region. Finally, the effect of temperature on the photoluminescence emission intensity of the RSP phosphor and its thermal activation energy were investigated. All of these characteristics indicate that this phosphor has potential for use in near-UV-based white LEDs. The crystal structure of the phosphate-based host matrix RbSrPO4 is investigated by Rietveld refinement for the first time. The photoluminescence properties of Eu2+-doped RbSrPO 4 are explored, and the results indicate that this phosphor has potential for use in near-UV-based white-light-emitting diodes.

Original languageEnglish
Pages (from-to)4662-4666
Number of pages5
JournalEuropean Journal of Inorganic Chemistry
Issue number26
DOIs
Publication statusPublished - 2013 Sep 1
Externally publishedYes

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Keywords

  • Doping
  • Luminescence
  • Rietveld refinement
  • Rubidium
  • Strontium

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Yim, D. K., Song, H. J., Roh, H. S., Kim, S. J., Han, B. S., Jin, Y. H., Hong, H. S., Kim, D-W., & Hong, K. S. (2013). Luminescent properties of RbSrPO4: Eu2+ phosphors for near-UV-based white-light-emitting diodes. European Journal of Inorganic Chemistry, (26), 4662-4666. https://doi.org/10.1002/ejic.201300457