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IN THIS STUDY, THE EU-DOPED LI2(BA1-XSRX)SIO4 POWDERS (X=0, 0.2, 0.4, AND 0.6) WERE SYNTHESIZED AT 850OC IN A REDUCTION ATMOSPHERE (5% H2 + 95% N2) FOR A DURATION OF 1 H THROUGH THE SOLID-STATE REACTION METHOD. THE REDUCTION ATMOSPHERE WAS INFUSED AS THE SYNTHESIS TEMPERATURE REACHED 850OC, AND IT WAS REMOVED AS THE TEMPERATURE WAS DOWN TO 800 ~ 500OC. LI2(BA1-XSRX)SIO4 (OR LI2BASIO4), (BA,SR)2SIO4 (OR BASIO4), AND LI4SIO4 PHASES WERE CO-EXISTED IN THE SYNTHESIZED EU-DOPED LI2(BA1-XSRX)SIO4 POWDERS. THE FIRST NOVELTY IS THAT WE WOULD SHOW THAT THE REDUCTION ATMOSPHERE REMOVING (RAR) TEMPERATURE OF THE LI2(BA1-XSRX)SIO4 PHOSPHORS HAD LARGE EFFECT ON THEIR PLE AND PL PROPERTIES. EXCEPT THE 800OC-RAR-TREATED LI2BASIO4 PHOSPHOR, PLE SPECTRA OF ALL OTHER LI2(BA1-XSRX)SIO4 PHOSPHORS HAD ONE BROAD EMISSION BAND WITH TWO EMISSION PEAKS CENTERED AT ~242 AND ~283 NM; PL SPECTRA OF THEM HAD ONE BROAD EMISSION BAND WITH ONE EMISSION PEAK CENTERED AT 502~514 NM. WE WOULD SHOW THAT THE 800OC-RAR-TREATED LI2BASIO4 PHOSPHOR EMITTED A RED LIGHT AND ALL OTHER LI2(BA1-XSRX)SIO4 PHOSPHORS EMITTED A GREEN LIGHT. THE REASONS TO CAUSE THESE RESULTS WOULD BE WELL DISCUSSED.
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Luminescence_:_the_journal_of_biological_and_chemical_luminescence
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Effect of Different Temperatures to Remove Reduction Gas on the Photoluminescence Properties of Eu-Doped Li2 (Ba1-x Srx )SiO4 Phosphors.
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