Abstract: Eu-doped Y₂O₃-Al₂O₃-SiO₂ fluorescent glasses were prepared by conventional melting method.The effect of starting compositions on the glass-forming ability and the fluorescent properties of the glasses were studied.It was found that,the content of SiO₂ affected the glass-forming ability significantly,and for a melting temperature of 1500 ℃ and a fixed Y/Al molar ratio of 3/5,pure glass could be obtained with a SiO₂ content of 52-68%(mol).Under an excitation at 395 nm,the glasses showed two strong emission peaks at 588 nm and 614 nm,respectively.The intensities of the emission peaks varied with the concentrations of Eu³⁺,and reached the maximum with a Eu³⁺ concentration of 1.5%(mol).

Key words: Y₂O₃-Al₂O₃-SiO₂, Eu³⁺, fluorescent glass, luminescent properties