PHOTOLUMINESCENT MATERIAL WITH LONG AFTERGLOW, BASED ON YTTERBIUM DOPED GADOLINIUM OXYCARBONATE AND THEIR MANUFACTURE

摘要

There is described a new ytterbium-doped gadolinium oxycarbonate having formula Gd (2-x) O 2 CO 3 Yb x , wherein x is between 0.002 and 0.08, which has an intense photoluminescence emission centered around 970 nm, with persistence up to 16 hours; the material may be used in optoelectronics and, especially, in the field of bio-imaging for diagnostic purposes.