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A series of color-adjustable phosphors La 5 Si 2 BO 13 (LSBO):Ce 3+ ,Mn 2+ were synthesized through a high temperature solid-state method. The crystal structures of Ce 3+ and Mn 2+ doped La 5 Si 2 BO 13 phosphors were refined by the Rietveld method, which were proved to be the apatite-type hexagonal phase (space group of P63/m). It was found that two different La 3+ sites in the La 5 Si 2 BO 13 phase were occupied evenly by Ce 3+ and Mn 2+ ions, and then the formed vacancy contributed to thedoi:10.1039/c3ra47223j fatcat:au3zuuompjcubng4bljd4mgnoq