Aluminate-based green up-conversion luminescent material with high thermal stability and preparation method thereof

The invention belongs to the technical field of inorganic luminescent materials, and particularly relates to an aluminate-based green up-conversion luminescent material with high thermal stability which is excited by near-infrared light and a preparation method of the aluminate-based green up-conversion luminescent material. According to the preparation method, Er/Yb co-doped calcium aluminate gadolinium is prepared by adopting a high-temperature solid-phase method, and the Er/Yb co-doped calcium aluminate gadolinium luminescent material is obtained by uniformly mixing high-purity CaCO3, Al2O3, Gd2O3, Er2O3 and Yb2O3 raw materials in proportion and sintering. The luminescent material generates green light emission of about 520-550 nm under the excitation of 980 nm near-infrared light, and the up-conversion luminescence thermal stability is high. The luminescent material provided by the invention is environment-friendly and low in cost, and can be widely applied to the fields of anti-counterfei