PHOSPHATE OF LANTHANE, CERIUM AND HEART / SHELL-TYPE TERBIUM, LUMINOPHORE COMPRISING THIS PHOSPHATE AND METHODS OF PREPARATION

摘要

A phosphate containing particles including a mineral core and a lanthanum cerium terbium phosphate shell uniformly coating the mineral core with a thickness greater than or equal to 300 nm is described. The particles can have a mean diameter between 3 m and 6 m and the lanthanum cerium terbium phosphate can have the following general formula (1): La(1-x-y)CexTbyPO4 (1), wherein x and y comply with the following conditions: 0.4x0.7 and 0.13y0.17. A phosphor including the above-described phosphate is also described.