Open AccessSynthesis and luminescence properties of YPO4:Eu3+ nanophosphor
Author(s) -
Jia Zhang,
Yuhua Wang,
Dan Wang
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.7267
Subject(s) - phosphor , materials science , crystallinity , scanning electron microscope , photoluminescence , tetragonal crystal system , luminescence , hydrothermal circulation , ultraviolet , analytical chemistry (journal) , intensity (physics) , absorption (acoustics) , diffraction , optoelectronics , chemical engineering , optics , crystal structure , crystallography , composite material , chemistry , physics , chromatography , engineering
A series of nanophosphors of Y1-xPO4:xEu3+005≤x≤030were synthesized by a mild hydrothermal method with post heat treatment. The structure and morphology of the samples were characterized by X-ray diffraction XRD and scanning electron microscope SEM. The results show that these nanophosphors have tetragonal structure with spherical and fine rod-like morphologies in acidic and alkaline condition, respectively, but all are on the nanoscale. The photoluminescence PL properties were also investigated under vacuum ultraviolet VUV excitation. Compared with samples prepared by solid state reaction, the PO3-4 absorption band located at 142 nm in vacuum ultraviolet region shifts towards high-energy direction. The intensity of 5D0→7F2 619 nm emission peak of Eu3+ is higher than that of 5D0→7F1. After heat treatment, the color purity and luminous intensity of the phosphors can be greatly improved. The PL intensity of optimized phosphor is superior to that of samples prepared by solid state reaction. These phenomena can be attributed to the improved crystallinity and reduced defects.