Optical study of rare earth activated NaBa0.45Sr0.55PO4 phosphor

作者：Shinde K N^*; Dhoble S J

来源：Optik, 2012, 123(21): 1975-1979.

DOI：10.1016/j.ijleo.2011.09.033

• Phosphate
• Phosphor
• Combustion synthesis
• Photoluminescence

Dy3+ and Eu2+ activated triple phosphate NaBa0.45Sr0.55PO4 phosphors were prepared by facile combustion synthesis. Excellent emission observed when NaBa0.45Sr0.55PO4:Dy3+ and NaBa0.45Sr0.55PO4:Eu2+ excited at 348 nm and 354 nm wavelength respectively. From a powder X-ray diffraction (XRD) analysis, the formation of compound with a trigonal-hexagonal scalenohedral structure was confirmed. In the photoluminescence spectra, the NaBa0.45Sr0.55PO4:Dy3+ phosphor emits two distinctive colours: a blue band centred at 482 nm and a yellow band at 576 nm originating from Dy3+ whereas NaBa0.45Sr0.55PO4:Eu2+ emits blue colour at 470 nm. Also, surface morphology has been studied by scanning electron microscope (SEM). Phosphors exhibit a strong absorption in the range of 340-400 nm and chromatic properties indicated that present phosphor is a hopeful candidate for near ultra violet light emitting diodes (nUV LEDs).

• 出版日期2012