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 journalArticlepeer-review

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

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