Energy Transfer and Significant Improvement Moist Stability of BaMgAl[sub 10]O[sub 17]:Eu[sup 2+],Mn[sup 2+] as a Phosphor for White Light-Emitting Diodes

co-doped with and was synthesized in a solid-state reaction and their luminescence properties were investigated as functions of the concentrations of the sensitizer and activator. The energy transfer from to was mainly of the resonance-type via an electric dipole–quadrupole interaction. Additionally, the addition of various fluxes such as and in the synthesis improves the moist stability. This is particularly important for the phosphor in white light-emitting diodes (LEDs). The white LEDs with a color rendering index of 95 were fabricated by coating the synthesized phosphors on a UV LED chip to verify the real application capability.