A potential green-emitting phosphor Ca8Mg(SiO4)4Cl2:Eu2+ for white light emitting diodes prepared by sol-gel method

► An intense green emission phosphor Ca8Mg(SiO4)4Cl2:Eu2+ used for near-UV or blue light excited white LEDs is prepared by modified sol-gel method. ► Factors affect the PL intensity of phosphor are investigated, including the dosage of CaCl2, concentration of Eu2+ and heating temperature. ► The PL intensity of phosphor prepared by sol-gel method is stronger than that of phosphor prepared by solid state reaction.