Structure and luminescence properties of Ba3WO6:Eu3+ nanowire phosphors obtained by conventional solid-state reaction method

• Novel Ba3WO6:Eu3+ nanowire phosphors were synthesized by solid state reaction method.
• The phosphors show an intense CT band at around 318 nm and red emission.
• Alkali-metal co-doped charge compensation leads to the increase of emission intensity.

For the first time, novel Ba3−xWO6:xEu3+ (x = 0.01, 0.03, 0.05, 0.08, 0.1) nanowire phosphors were synthesized by the conventional solid state method. The X-ray pattern indicates that Ba3WO6 belongs to the cubic system with space group Fm-3m. The photoluminescence (PL) spectra demonstrate that the phosphors emit strong red light centered at 595 nm corresponding to 5D0 → 7F1 transition of Eu3+ ion under CT band excitation. The position of charge transfer (CT) band of Ba2.95WO6:0.05Eu3+ shifts to a lower energy region (red shift) with the increase of annealing temperature. The co-doped effect of alkali-metal ions (Li+, Na+, and K+) on the luminescence behavior of Ba3WO6:Eu3+ has been discussed in this paper. The luminescence properties suggest that the Ba3WO6:Eu3+ phosphor may be a promising candidate in solid-state lighting applications.