Patent ID: 8765016

Claim:
A preparing method for making a green luminescent material of terbium doped gadolinium borate, comprising the following steps: step one, selecting the source compounds of alkaline earth metal ion, boric acid radical ion (BO 3 2− ), Gd 3+ , and Tb 3+ by the stoichiometric ratio, wherein, the stoichiometric ratio is the molar ratio of the corresponding element in the formula of M 3 Gd 1-x Tb x (BO 3 ) 3 , and the source compound of BO 3 + is over 10%-30% by the molar ratio, M is alkaline earth metal element, and x is 0.005-0.5; step two, mixing each compound; step three, pre-treating the mixture by sintering and then cooling the mixture; step four, grinding the sintered matter, calcining the grinded matter in reducing atmosphere and then cooling to get the green luminescent material of terbium doped gadolinium borate; wherein the compounds are even mixed with fluxing agents.