Synthesis and photoluminescence of single crystals europium ion-doped BaF2 cubic nanorods

In this work, we used the hydrothermal method to synthesize Eu3+ ion-doped cubic BaF2 nanorods, which is a luminescent material. The clubbed structures were well crystallized and exhibited face-centred cubic structures, as indicated by powder X-ray diffraction, scanning electron microscopy, electron diffraction, and transmission electron microscopy. The luminescent properties were studied, and local symmetry surrounding Eu3+ ions and electronic transition processes included. The results indicated that Eu3+ occupied only one C4ν site in nanorods.

Graphical abstractFig. 2: (a) SEM image of the BaF3:Eu3+ nanorods. (b) TEM image of an individual BaF3:Eu3+ nanorod. Inset: Electron diffraction patterns of the nanorods. (c) TEM image of BaF3:Eu3+ nanopropellers. Fig. 3: (a) Excitation spectra of BaF2:Eu3+ nanorods, monitored at 614.5 nm emission position at room temperature. (b) Emission spectra of BaF2:Eu3+ nanorods under 393 nm excitation at room temperature.Figure optionsDownload full-size imageDownload as PowerPoint slide