Synthesis of LaTb x O y :Eu 3+ nanowire arrays and study of performances on fluorescence enhancement and red shift

Abstract

Highly ordered LaTb x O y :Eu3+ 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 5D0–2F2 and 5D0–7F4 energy level transition of Eu3+, and Tb3+ exhibits strong fluorescence enhancement and sensitisation in LaTb x O y :Eu3+ nanowire arrays with the existence of La3+. The fluorescence intensity of LaTb x O y :Eu3+ nanowire arrays is related to the doping concentration of Eu3+ ion. When the doping concentration of Eu3+ is 8%, the fluorescence intensity reaches a maximum, and remarkably decreases at higher concentrations.