Solid state synthesis and luminescent properties of bright blue-emitting Ba2P2O7:Eu2+ phosphor

• Published in: SN applied sciences Vol. 2; no. 4; p. 562
• Main Authors: Derbel, Mouna, Mbarek, Aïcha
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-04-2020; Springer Nature B.V
• Subjects: 1. Chemistry (general); Applied and Technical Physics; Chemistry/Food Science; Crystal structure; Earth Sciences; Engineering; Environment; Europium; Infrared spectroscopy; Light emitting diodes; Luminescence; Magnetic properties; Materials Science; Near ultraviolet radiation; NMR; Nuclear magnetic resonance; Optical properties; Phosphors; Phosphorus; Pyrophosphates; Raman spectroscopy; Research Article; Solid state; X-ray diffraction; Blue-emitting; Eu; Phosphors; Pyrophosphate; Luminescence
• ISSN: 2523-3963; 2523-3971
• DOI: 10.1007/s42452-020-2329-8

Eu
2+
-activated Ba
2
P
2
O
7
pyrophosphates were successfully synthesized by the solid-state reaction under reduced atmosphere and were characterized by X-ray diffraction (XRD) and Nuclear magnetic resonance and infrared (IR)/Raman spectroscopy. The luminescence properties of Ba
2−x
P
2
O
7
: xEu
2+
(x = 0.01, 0.05) phosphors were investigated in ultraviolet (UV) and vacuum ultraviolet (VUV) regions. Under 131 or 320 nm excitation, the phosphors exhibit a blue emitting band ranging from 350 to 500 nm, which is provided corresponding to the 5
d
–4
f
transition of Eu
2+
. The as-synthesized phosphors present good thermal luminescence stability on temperature quenching and high color purity with the CIE coordinate (0.172, 0.031) for Ba
2
P
2
O
7
:1%Eu
2+
phosphor. These results suggest that the Ba
2
P
2
O
7
:Eu
2+
pyrophosphate might be a promising blue-emitting phosphor for near ultraviolet (n-UV) light-emitting diodes (LEDs).