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用溶胶 -凝胶法和超临界干燥技术制备了Sm3+/Al2 O3气凝胶介孔复合体 ,并对其光致发光特性进行了系统的研究 .实验发现 :随退火温度的升高 ,Sm3+在Al2 O3 气凝胶中荧光强度逐步增强 ,90 0℃退火时达到最强 ,其后发光强度会随退火温度升高而减弱 ;随着Sm3+含量上升其发光强度也会发生由弱到强再到弱的变化 .
The Sm3 + / Al2 O3 airgel mesoporous composite was prepared by sol-gel method and supercritical drying technique, and the photoluminescence properties of Sm3 + / Al2 O3 were systematically studied. It was found that with the increase of annealing temperature, Sm3 + The fluorescence intensity of Al 2 O 3 aerogels gradually increased and reached the maximum at 90 0 ° C, and the luminescence intensity of Al 2 O 3 aerogels decreased with the increase of annealing temperature. The luminescence intensity of Al 2 O 3 aerogels also changed from weak to strong Weak change.