KBaPO4:Ln (Ln=Eu, Tb, Sm) phosphors for UV excitable white light-emitting diodes

C. C. Lin, Y. S. Tang, S. F. Hu, R. S. Liu

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

This letter reports the novel three emission bands based on phosphate host matrix, KBaPO4 doped with Eu2+, Tb3+, and Sm3+ for white light-emitting diodes (LEDs). The phosphors were synthesized by solid-state reaction and thermal stability was elucidated by measuring photoluminescence at higher temperatures. Eu2+-doped KBaPO4 phosphor emits blue luminescence with a peak wavelength at 420 nm under maximum near-ultraviolet excitation of 360 nm. Tb3+-doped KBaPO4 phosphor emits green luminescence with a peak wavelength at 540 nm under maximum near-ultraviolet excitation of 370 nm. Sm3+-doped KBaPO4 phosphor emits orange-red luminescence with a peak wavelength at 594 nm under maximum near-ultraviolet excitation of 400 nm. The thermal stabilities of KBaPO4:Ln (Ln=Eu2+, Tb3+, Sm3+), in comparison to commercially available YAG:Ce3+ phosphor were found to be higher in a wide temperature range of 25-300 °C.

Original languageEnglish
Pages (from-to)1682-1684
Number of pages3
JournalJournal of Luminescence
Volume129
Issue number12
DOIs
Publication statusPublished - Dec 1 2009
Externally publishedYes

Fingerprint

Luminescence
Phosphors
phosphors
Light emitting diodes
light emitting diodes
Light
Hot Temperature
luminescence
Temperature
Wavelength
Thermodynamic stability
thermal stability
wavelengths
excitation
Phosphates
Solid state reactions
yttrium-aluminum garnet
Photoluminescence
phosphates
solid state

Keywords

  • KBaPO
  • Light-emitting diodes
  • Phosphor

ASJC Scopus subject areas

  • Biophysics
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Condensed Matter Physics

Cite this

KBaPO4:Ln (Ln=Eu, Tb, Sm) phosphors for UV excitable white light-emitting diodes. / Lin, C. C.; Tang, Y. S.; Hu, S. F.; Liu, R. S.

In: Journal of Luminescence, Vol. 129, No. 12, 01.12.2009, p. 1682-1684.

Research output: Contribution to journalArticle

Lin, C. C. ; Tang, Y. S. ; Hu, S. F. ; Liu, R. S. / KBaPO4:Ln (Ln=Eu, Tb, Sm) phosphors for UV excitable white light-emitting diodes. In: Journal of Luminescence. 2009 ; Vol. 129, No. 12. pp. 1682-1684.
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