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Herein, we report a series of phosphate phosphors Ca9Ce(PO4)7:xTb3+/yMn2+, exhibiting much efficient energy transfer, stable thermal stability and high quantum efficiency. First of all, Ca9Ce(PO4)7 host is full of sensitizers (Ce3+) and the maximum energy transfer efficiency from Ce3+ to Mn2+ and Tb3+ reaches 91% and 72%, respectively. In Ca9Ce(PO4)7:xTb3+/yMn2+ system, white light can be obtained...
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