中文摘要：

实验制备了Ce^3＋掺杂重金属锗酸盐玻璃样品,测试了透射、发射、激发光谱.结果表明：由于锗酸盐玻璃的光碱度较大,Ce^3＋的发射波长发生了明显红移.La^3＋的加入对Ce^3＋具有分散作用,有助于提高Ce^3＋的掺入量且降低了浓度淬灭效应.对于Ce^3＋和Tb3＋共掺杂玻璃,Ce^3＋和Tb3＋的发光均有所减弱,这可能是由于Ce^3＋,Tb3＋二者在351～381 nm波长处有激发峰的重叠,而存在竞争吸收所致.

英文摘要：

Cerous ion-doped heavy-metal germinate glasses were prepared and their transmission, emission and excitation spectra were measured. The results show that the emission peak wavelength of Ce^3＋ has an obvious red-shift due to the higher optical basicity of germanate glasses. It was also found that the addition of La^3＋ disperses Ce^3＋ in the glass matrix, enhances the doping content of Ce^3＋ in the glasses and reduces the effect of concentration quenching. As for Ce^3＋ and Tb^3. co-doped glasses, the luminescence intensifies of Ce^3＋ and Tb^3＋ both decrease. This could be related to the competitive absorption between Ce3＋ and Tb^3＋ because their excita- tion peaks pile up on the wavelength of 351-381 nm.