Photoluminescent properties of the monoclinic Ba2MgSi2O7:Eu2+ phosphor prepared by the combustion‐assisted synthesis method

A blue–green emitting phosphor of the monoclinic Ba2MgSi2O7:Eu2+ was prepared by the combustion‐assisted synthesis method and an efficient bluish‐green emission under from ultraviolet to visible light was observed. The luminescence, crystallinity and particle sizes were investigated by using luminescence spectrometry, X‐ray diffractometry (XRD) and scanning electron microscopy (SEM). The emission spectrum shows a single intensive band centered at 498 nm, which corresponds to the 4f65d1 → 4f7 transition of Eu2+. The excitation spectrum is a broad extending from 260 to 465 nm, which matches the emission of ultraviolet light‐emitting diodes (UV‐LEDs). The critical quenching concentration of Eu2+ in Ba2MgSi2O7:Eu2+ phosphor is about 0.05 mol. The corresponding concentration quenching mechanism is verified to be a dipole–dipole interaction. The result indicates that Ba2MgSi2O7:Eu2+ can be potentially useful as a UV radiation‐converting phosphor for white light‐emitting diodes (LEDs).