The paper presents the results of the photoluminescence and thermoluminescence behaviour of Mn2+-doped Zn2SiO4 powder synthesized by high - energy planetary ball milling technique followed by calcination in air at 1250 °C. The obtained phosphor was characterized using powder X-Ray diffraction (PXRD), field emission scanning electron microscopy (FESEM), photoluminescence (PL) and thermo- luminescence (TL) techniques. The PL spectrum illustrates the emission centered at 525 nm corresponds to the 4T1(4G) →6A1(6S) transition of Mn2+ in the host Zn2SiO4 crystal. The photoluminescence excitation spectra present six excitation bands peaking at
270 nm, 356 nm, 377 nm, 420 nm, 432 nm and 470 nm, respectively, in which the strongest absorption belongs to 420 nm wave length showing potential application of the prepared phosphor in white-light-emitting diode as a blue-to-green color conversion phosphor.