Highly ordered LaTb x O y :Eu 3+ nanowire arrays have been synthesised in anodic aluminium oxide template by chemical co-deposition at negative pressure suction, it is amorphous and with homogeneous morphologies. There are two peaks at 619 and 704 nm with excitation wavelength of 394 nm, which have red shift slightly relative to the 5 D 0-2 F 2 and 5 D 0-7 F 4 energy level transition of Eu 3+ , and Tb 3+ exhibits strong fluorescence enhancement and sensitisation in LaTb x O y :Eu 3+ nanowire arrays with the existence of La 3+. The fluorescence intensity of LaTb x O y :Eu 3+ nanowire arrays is related to the doping concentration of Eu 3+ ion. When the doping concentration of Eu 3+ is 8%, the fluorescence intensity reaches a maximum, and remarkably decreases at higher concentrations.
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