RbBaPO4: Eu2+: A new alternative blue-emitting phosphor for UV-based white light-emitting diodes

Hee Jo Song, Dong Kyun Yim, Hee Suk Roh, In Sun Cho, Seung Joo Kim, Yun Ho Jin, Hyun Woo Shim, Dong-Wan Kim, Kug Sun Hong

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

A novel blue-emitting phosphor on a phosphate-based host matrix, RbBaPO4:Eu2+ (RBP), was synthesized by a solid-state reaction. This phosphor could be excited efficiently by ultra violet-visible light in the 220-420 nm range to exhibit a highly efficient emission peak in the range of 420-440 nm. To investigate the possibility of commercial use, it was compared with the commercial blue phosphors of BaMgAl10O 17:Eu2+ (BAM) and Sr3MgSi2O 8:Eu2+ (SMS) to assess the photoluminescence properties. Compared to commercial phosphors, RBP displayed enhanced photoluminescence properties, in this case a high quantum efficiency and excellent thermal stability under near-Ultra Violet (n-UV) excitation. Furthermore, bright white light-emitting diodes (LEDs) were fabricated by integrating the RBP phosphor, along with commercial green/red phosphors, into n-UV LEDs. These results strongly suggest that the newly discovered RBP phosphor can be commercially utilized in UV-based white LEDs.

Original languageEnglish
Pages (from-to)500-505
Number of pages6
JournalJournal of Materials Chemistry C
Volume1
Issue number3
DOIs
Publication statusPublished - 2013 Jan 21
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'RbBaPO<sub>4</sub>: Eu<sup>2+</sup>: A new alternative blue-emitting phosphor for UV-based white light-emitting diodes'. Together they form a unique fingerprint.

  • Cite this

    Song, H. J., Yim, D. K., Roh, H. S., Cho, I. S., Kim, S. J., Jin, Y. H., Shim, H. W., Kim, D-W., & Hong, K. S. (2013). RbBaPO4: Eu2+: A new alternative blue-emitting phosphor for UV-based white light-emitting diodes. Journal of Materials Chemistry C, 1(3), 500-505. https://doi.org/10.1039/c2tc00162d