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Down-conversion properties of Eu3 + doped M2Y2Si2O9 (M =Ba,Ca,Mg,Sr) phosphors have been investigated in detail.These phosphors were synthesized via the simple,fast and cost-effective sol-gel technique at a temperature of 950 ℃.Color coordinates and emission color can be altered by the varying concentration of dopant ion in Ca2Y2Si2O9 phosphor.Optimum luminescence intensity was obtained when doping 0.03 mol of Eu3 + ion.Using the excitation wavelength of 395 run,these silicates showed strong red color,pure and sharp spectral peaks in visible region due to 5Do→7F1-3 transitions of Eu3 + present in the lattice.Effect of reaction temperature on luminescence was also analyzed for these phosphors.The sharp peaks in the X-ray diffraction patt indicated the high crystallinity of prepared phosphors.Ca2Y2Si2O9 has shown an orthorhombic crystal structure.The FTIR results confirmed the metal-oxygen vibrational modes available in the range of 400-1600cm-1.Transmission electron microscopy images have revealed that the variation of alkaline earth metal provided a very different crystal structure.Excellent down conversion response of these phosphor materials can provide a great significance in the application of the coming solar devices.