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.com
Volume 6, Issue 4 (Suppl)
J Material Sci Eng, an open access journal
ISSN: 2169-0022
Materials Congress 2017
June 12-14, 2017
June 12-14, 2017 Rome, Italy
Materials Science and Engineering
9
th
World Congress on
Preparation and luminescent properties of orange reddish emitting phosphor KCaBi(PO
4
)
2
:Sm
3+
Mi R Y
and
Liu Y G
China University of Geosciences, China
A
novel orange reddish light emitting phosphor KCaBi(PO4)
2
:Sm
3+
for UV excitations has been synthesized by the solid state
reaction technique. The powder X-ray diffraction patterns and XPS were utilized to confirm the phase composite and crystal
structure. The excitation and emission spectra, decay curves and chromaticity coordinates of the as-prepared phosphors were
characterized to investigate the photoluminescence properties for application in white light-emitting diodes. The results revealed that
the KCaBi(PO4)
2
:Sm
3+
phosphors can be effectively assimilated with near ultraviolet excitation at 405 nm, and exhibit four emission
bands originating from the
4
G
2
-6
H
J
(J=5/2, 7/2, 9/2 and 11/2) transitions of Sm
3+
ions. The concentration quenching mechanism was
verified as dipole-dipole interaction. Additional, KCaBi(PO
4
)
2
:0.04Sm
3+
has a better thermal stability and the prepared samples have
a potential application in w-LEDs.
Biography
Mi R Y is a PhD student studying at the School of Materials Science and Technology, China University of Geosciences Beijing. She has her expertise in design and
structural analysis of the novel rare earth doped phosphors, controllable preparation and luminescence properties of phosphate materials applied for the w-LED
and solar cells.
miruiyu@163.comMi R Y et al., J Material Sci Eng 2017, 6:4(Suppl)
DOI: 10.4172/2169-0022-C1-068