Eu2+, Mn2+ Co-Doped Ba3MgSi2O8 Single-Host White Emission Phosphor

Abstract

Eu²⁺, Mn²⁺ codoped Ba₃MgSi₂O₈ single-host white emission phosphor was prepared by solid-state reaction method. Three emission bands peaking at 435nm, 480nm and 615nm were observed under excitation wavelength of 380 nm. The 435nm and 480nm emission bands are attributed to 5d→4f transition of Eu²⁺ ions partially replaces Ba²⁺ sites in host. The emission band peaking at 615nm originates from the ⁴T₁→⁶A₁ transition of Mn²⁺ ions. When the concentrations of the Eu²⁺, Mn²⁺ and Al³⁺ were 0.1mol, 0.1mol and 0.35mol respectively, the sample presented white emitting under excitation wavelength of 380 nm.