A new type of highly efficient luminescent material -: The system Al2O3-B2O3 containing Ce3+ and Tb3+ ions

The system Al2O3-B2O3 containing Ce3+ and Tb3+ 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, B-11 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 Ce3+ and Tb3+ ions are doped into the amorphous phase.