A New Type of Highly Efficient Luminescent MaterialThe System Al₂O₃−B₂O₃Containing Ce³⁺and Tb³⁺Ions

The system Al 2 O 3 −B 2 O 3 containing Ce 3+ and Tb 3+ ions was investigated for the first time. It was found that certain compositions give rise to a new highly efficient green luminescent material. The investigation of structure by XRD, 11 B MAS NMR spectra, IR spectra, high-resolution electron microscopy, and selected area diffraction images reveals that a crystalline phase and an amorphous phase coexist in the sample. The electron-dispersive X-ray analysis and luminescent studies reveal that the Ce 3+ and Tb 3+ ions are doped into the amorphous phase.