Effect of Ti co-doping on photoluminescence characteristics of Eu:BaAl2O4

• BaAl2O4:Eu2+, Ti3+, green phosphor with varying Ti concentrations were prepared by solid-state reaction method.
• Powder XRD analysis shows the prepared compositions are single phase with hexagonal structure.
• High emission efficiency was observed for the Ti co-doped samples compared to the parent phosphor.
• This study shows that this materials has a potential for green phosphor.

The effect of Ti co-doping in BaAl2O4:Eu2+ phosphor material on crystalline quality, morphology and photoluminescence (PL) characteristics was investigated. The co-doped green phosphor compositions (BaAl2O4:Eu2+, Ti3+) with varying concentrations of Ti were prepared by solid-state synthesis method. These compositions were characterized for their phase, morphology and crystallinity by powder X-ray diffraction, SEM and TEM techniques. The photoluminescence properties were investigated measuring PL and decay time. Broad band UV excited luminescence was observed for BaAl2O4:Eu2+, Ti3+ in the green region (λmax = 500 nm) due to transitions from 4f6 5d1 to the 4f7 configuration of the Eu2+ ion.