光谱纯Y2O3,La2O3,Lu2O3中微量杂质的光致发光谱研究

测定了光谱纯稀土化合物Ｙ２Ｏ３，Ｌａ２Ｏ３，Ｌｕ２Ｏ３中微量杂质在４８８．０ｎｍ和５１４．５ｎｍ激光线激发下的光致发光谱以及在可见光４４５～７４１ｎｍ范围内吸收谱，Ｙ２Ｏ３，Ｌｕ２Ｏ３样品在４４８．０ｎｍ和５１４．５ｎｍ激光激发下都有发光效应，而Ｌａ２Ｏ３样品只在４８８．０ｎｍ激光激发下才发光，分析了结果表明，Ｙ２Ｏ３，Ｌａ２Ｏ３，Ｌｕ２Ｏ３的发光谱分别是由其存在的微量Ｅｒ＾３＋，Ｓｍ＾３＋和Ｅｕ

The Photoluminescence Spectra of Trace Impurity in Spectrographic Purity Y 2O 3, La 2O 3 and Lu 2O 3

The visible region absorption spectra and photoluminescence spectra excited by 514.5 nm and 488.0 nm laser for the sesquioxides of the rare earths Y 2O 3, La 2O 3 and Lu 2O 3, which were finely divided powders of spectrographic purity, have been measured. When 488.0 nm and 514.5 nm laser lines were used as pumping excitations, the luminescence was abserved from Y 2O 3 and Lu 2O 3, whereas the sample La 2O 3′s fluorescence was only excited by 488.0 nm laser line. Comparing the asorption spectra and photoluminescence spectra of them with that of other RE 2O 3, the results show that the luminescences of Y 2O 3, La 2O 3 and Lu 2O 3 arised from the sample′s trace impurity Er 3+ , Sm 3+ and Eu 3+ respectively.