Journal
JOURNAL OF LUMINESCENCE
Volume 181, Issue -, Pages 407-410Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2016.09.060
Keywords
Phosphor; Solid state; Luminescence properties; Rare earth ions
Categories
Funding
- National Natural Science Foundation of China [41172053]
- Fundamental Research Funds for the Central Universities [2652015307]
- Science and Technology Innovation Fund of the China University of Geosciences (Beijing)
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The Ca9La(PO4)(5)(SiO4)Cl-2:Dy3+ (CLPSCI:Dy3+) powder phosphor with apatite structure has been successfully synthesized via high -temperature solid state method. Single phase in such phosphor was verified through X-ray diffraction (XRD) technique. The Dy ions concentration dependent luminescence properties including emission, excitation and lifetimes of Dy ions were characterized using photoluminescence (PL) spectroscopy. The results showed that CLPSCI:Dy3+ phosphor could efficiently assimilate the n-UV light and emit blue (similar to 486 nm) and yellow light (similar to 578 nm), originating from the f-f transitions of Dy3+. The critical Dy3+ quenching concentration (QC) was determined to be about 12 mol%. The concentration quenching mechanism was also determined to be dipole-dipole interaction. (C) 2016 Elsevier B.V. All rights reserved.
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