Synthesis and photoluminescence of novel Ca(1-x)MgP2O7:xEu(3+) pyrophosphate phosphor for near ultraviolet light emitting diodes.
We studied the microstructure and photoluminescence properties of Ca(1-x)MgP2O7:xEu(3+) (0.01 ≤ x ≤ 0.2) phosphors, considering Eu(3+) content. The Ca(1-x)MgP2O7:xEu(3+) phosphors crystallized in the monoclinic structure, belonging to the space group of P2(1)/n. The Ca(1-x)MgP2O7:xEu(3+) phosphors showed a nanocrystalline nature. In the FT-IR and Raman spectra, the stretching vibrations of PO3 and P-O-P groups in (P2O7)(4-) were observed. The amount of Eu(3+) content significantly affected the magnitude of the excitation and emission intensities. The excitation intensity at 393 nm and the emission intensity at 605-628 nm were increased with an increase in Eu(3+) content up to x = 0.1 and then decreased with further increasing Eu(3+) content. The strong emission intensity under near ultraviolet excitation makes it possible red phosphor for generating white light based on LEDs.
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A
Hakeem
K N
KN
Shinde
S J
SJ
Yoon
S J
SJ
Dhoble
K
K
Park