Synthesis of luminescent strontium-magnesium orthophosphate activated with cerium and manganese

Cerium activated strontium-magnesium orthophosphate phosphor exhibits strong UV luminescence (emission maximum at 370-380 nm) whereas cerium - manganese activated phosphor shows pink luminescence (emission maxima at 370-380 nm and 605-610 nm). These phosphors could be used for the manufacture of eritemal or copy machine lamps and for fluorescent lamps for luminous signs, respectively. Samples of (Sr 1-x Mg x ) 3 (PO 4 ) 2 :Ce and (Sr 1-x Mg x ) 3 (PO 4 ) 2 :Ce,Mn phosphors with variable compositions were synthesised and characterized. Crystalline structure (XRD patterns) and luminescence properties (emission and excitation spectra) were determined and discussed in order to establish the optimum synthesis conditions for phosphor preparation.