Journal
RESULTS IN PHYSICS
Volume 8, Issue -, Pages 99-103Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.rinp.2017.10.025
Keywords
Photoluminescence; Phosphor; Wet chemical method; Solid state lighting; XRD; SEM
Funding
- Inter-University Accelerator Centre (IUAC), New Delhi
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Green emitting Li2Mg1-xZrO4:xTb(3+) (0.1 <= x <= 2.0) phosphor powders were synthesized via the wet chemical synthesis and the luminescent proprieties were studied when excited at 380 nm and present a dominant and strong green luminescence peak at 543 nm, due to D-F transition. The preparation of Li2Mg1-xZrO4:xTb(3+) (0.1 <= x <= 2.0) phosphor powders were confirmed by X-ray diffraction (XRD) results without any secondary or impurity phases. The size and morphology of the Li2Mg1-xZrO4:xTb(3+) (0.1 <= x <= 2.0) phosphor powders were further examined by scanning electron microscopy (SEM). Photoluminescence (PL) results have shown strongest green emission at 543 nm, which is originated due to D-5(4)-F-7(5) transition of Tb3+ ion, for the Li2Mg1-xZrO4:xTb(3+) (0.1 <= x <= 2.0) phosphor. The addition of concentration Tb3+ was greatly improved the photoluminescence properties of present phosphors. The present study suggests that the Li2Mg1-xZrO4:xTb(3+) (0.1 <= x <= 2.0) phosphor is a strong candidate as a green component for phosphor-converted white light-emitting diodes (LEDs). (C) 2017 Published by Elsevier B.V.
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