alexa Preparation And Luminescent Properties Of Orange Reddish Emitting Phosphor KCaBi(PO4)2:Sm3+ | 66531
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

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9th World Congress on Materials Science and Engineering
June 12-14, 2017 Rome, Italy

Mi R Y and Liu Y G
China University of Geosciences, China
Posters & Accepted Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022-C1-068
Abstract
A novel orange reddish light emitting phosphor KCaBi(PO4)2:Sm3+ 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:Sm3+ phosphors can be effectively assimilated with near ultraviolet excitation at 405 nm, and exhibit four emission bands originating from the 4G2 -6HJ(J=5/2, 7/2, 9/2 and 11/2) transitions of Sm3+ ions. The concentration quenching mechanism was verified as dipole-dipole interaction. Additional, KCaBi(PO4)2:0.04Sm3+ 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.

Email: [email protected]

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