摘要
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范围内的吸收谱，Ｙ２Ｏ３、Ｌｕ２Ｏ３样品在４８８．０ｎｍ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。分析结果表明Ｙ２Ｏ３、Ｌａ２Ｏ３、Ｌｕ２Ｏ３的发光谱分别是由其中存在的微量Ｅｒ３＋、Ｓｍ３＋和Ｅｕ３＋杂质引起的。
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.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1998年第9期1273-1277,共5页
Acta Optica Sinica
基金
国家自然科学基金
关键词
光致发光谱
可见光吸收谱
稀土化合物
微量分析
Y 2O 3, La 2O 3, Lu 2O 3, photoluminescence, visible region absorption spectra.
