Luminescence properties of a solid solution typed (Ba,Ca)3MgSi2O8: Eu2+, Mn2+ phosphor with a 660 nmfeatured photosynthetic action spectrum

A solid-solution-phase Ba 1.75 Ca 1.25 MgSi 2 O 8 : Eu 2+ , Mn 2+ phosphor in the photosynthetic action spectrum with dual band emissions at 438 nm and 660 nm is fabricated. X-ray diffraction (XRD) confirms the presence of the solid-solution phase. With the supporting information from the diffuse reflection spectrum, a feasible way to obtain higher energy-transfer (ET) efficiency is attained, and the ET efficiency of Eu 2+ -Mn 2+ is enhanced to 76%. The mechanism of this enhancement is owing to variation of the solid solution composition of Ca 3 MgSi 2 O 8 and Ba 3 MgSi 2 O 8 , which contributes to the extension of the critical distance. Temperature-dependent results show an enhancement which is attributed to Ca. These enhancements show great promise for improving eco-lighting devices.