EuドープAl_2O_3-SiO_2ゲルガラスのEu^<2+>イオンの発光特性

概要

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The Al_2O_3-SiO_2 gel glasses were prepared by the sol-gel method. The glasses synthesized by the hydrolysis of Si(OC_2H_5)_4, Al(NO_3)_3・6H_2O, Eu(NO_3)_3・6H_2O were heated in air at 800℃. The emission spectrum for the Eu ions consists of two emissions bands: a blue Eu^<2+> emission and a red Eu^<3+> emission. The fluorescence intensity for the Eu^<2+> ions decreases, and the fluorescence intensity for the Eu^<3+> ions increases with increasinng the temperature. It was found that the reabsorption of the blue Eu^<2+> emission is responsible for the fluorescence of the Eu^<3+> ions. The significant decrease in the Eu^<2+> ions is attributed to the thermal quenching with the activation energy of 0.03 eV.
福井工業大学の論文
2004-03-20