Optimized photoluminescence of red phosphor K2LiAIF6:Mn4+ synthesized by a cation-exchange method

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Red phosphor K_2LiAlF_6:Mn~(4+) has been synthesized by a cation-exchange method in HF solution. To optimize their optical properties, phosphors were synthesized using different reaction conditions. The K_2LiAlF_6:0.5%Mn~(4+) synthesized at 20℃ for4 h sho
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