Luminescence properties and energy transfer of Ba2Mg(PO4)2:Eu2+, Mn2+ phosphor synthesized by co-precipitation method

• Single phase of Ba2Mg(PO4)2:Eu2+, Mn2+ co-doped phosphor was synthesized by a co-precipitation method.
• The particles prepared by co-precipitation method have smaller size in diameter.
• These phosphors show emission centered at 456 nm and 575 nm under near-UV excitation.
• Transfer energy process from Eu2+ to Mn2+ has been investigated.

The Ba2Mg(PO4)2:Eu2+, Mn2+ phosphor is synthesized by a co-precipitation method. Crystal phase, morphology, excitation and emission spectra of sample phosphors are analyzed by XRD, SEM and FL, respectively. The results indicate particles synthesized by a co-precipitation method have a smaller size in diameter than that synthesized by conventional solid-state reaction method. Emission spectra of BMP:Eu2+, Mn2+ phosphor show a broad blue and a broad yellow emission bands with two peaks at about 456 nm and 575 nm under 380 nm excitation. An overlap between Eu2+ emission band and Mn2+ excitation band proves the existence of energy transfer from Eu2+ to Mn2+. Emitting color of the BMP:Eu2+, Mn2+ phosphor could be tuned by adjusting relative contents of Eu2+ and Mn2+ owing to energy transfer formula. Therefore, BMP:Eu2+, Mn2+ may be considered as a potential candidate for phosphor for near-UV white LED.