BISMUTH ION SENSITIZED RARE EARTH GERMANATE LUMINESCENCE MATERIALS AND PREPARATION METHODS THEREOF

摘要

Bismuth ion sensitized rare earth germanate luminescence materials and preparation methods thereof are disclosed. The luminescent materials are the compounds of the following general formula (Y1-x-y-zAxBiyLnz)2GeO5. The preparation methods comprise: using oxides, carbonates, oxalates, acetates, nitrates or halides of Y, A, Bi, Ln and Ge as raw materials, wherein A is one of Gd, Lu, Sc and La, and Ln is at least one of Tm, Ho, Sm, Tb, Eu and Dy, homogeneously grinding the raw materials, sintering at 1300-1500? for 6-24 h, and then cooling them to room temperature to obtain the bismuth ion sensitized rare earth germanate luminescence materials. The bismuth ion sensitized rare earth germanate luminescence materials of the present invention may further increase luminous performance of the luminescence materials and their preparing methods are easy to carry out and the costs of such methods are low.