A novel phosphor, Mn 4? doped La 2 LiTaO 6 , was developed by solid-state reaction method. The luminescent spectra and emission efficiencies of La 2 LiTaO 6 :-Mn x 4? (x = 0.001, 0.003, 0.005 and 0.01) were discussed. The effects of co-doped charge compensation ions, M = Mg 2? , Ca 2? , Na ? , were investigated, respectively. The excitation spectra indicated that La 2 LiTaO 6 :Mn 4? could be effectively excited by both NUV light and blue light. The emission spectra of the phosphor exhibit a broadband ranging from 670 to 720 nm with the maximum at about 709 nm in deep red region. The co-doping of Mg 2? could significantly improve the luminescent properties of La 2 LiTaO 6 :Mn 4? . Thus, phosphor La 2 LiTaO 6 :-Mn 4? , Mg 2? can serve as a key component to improve color rendering of blue-chip white-LEDs.

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