Tunable Red Luminescence of Mn[sup 2+]-Doped NaCaPO[sub 4] Phosphors

-doped were synthesized by a solid-state reaction. The structure and luminescence were investigated. The main excitation bands located at a band extending from 380 to 450 nm could match the emission of UV light emitting diode chips. The phosphors exhibited the emission in the wavelength range of 600–750 nm. The luminescence showed a redshift with the increase in doping concentrations. This color points could be tunable by controlling the doping of in . The thermal stability of the luminescence of ions was evaluated at different temperatures. The doping mechanism of ions was discussed.