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

研究成果: 雜誌貢獻期刊論文同行評審

100 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)1682-1684
頁數3
期刊Journal of Luminescence
129
發行號12
DOIs
出版狀態已發佈 - 2009 十二月

ASJC Scopus subject areas

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

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