Luminescence properties of a solid solution typed (Ba,Ca)_3MgSi_2O_8: Eu~(2+), Mn~(2+) phosphor with a 660 nmfeatured photosynthetic action spectrum

Authors：SONG Jun; SUN Liang; LI Jian; MA Jian; WANG Da-jian

Source：Optoelectronics Letters, 2014, 10(5): 343-346.

• photosynthetic
• action
• spectrum

A solid-solution-phase Ba_(1.75)Ca_(1.25)MgSi_2O_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_3MgSi_2O_8 and Ba_3MgSi_2O_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.