Self-assembly of LaBO3:Eu twin microspheres synthesized by a facile hydrothermal process and their tunable luminescence properties

The LaBO3:Eu twin microspheres, composed of nanorods with high crystallinity, were synthesized by a facile hydrothermal process. Tunable luminescence property, which was observed by varying the excitation wavelength of the samples, was studied. Near white light can be generated for exciting at ∼370 and 390 nm. Because of surface defect, the LaBO3 twin microspheres present blue emission under the excitation wavelength of ∼330 nm.