| （LaO）3BO3中Eu^3＋和Sm^3＋的光致发光 |
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| 引用本文： | 彭夷安,林建华.（LaO）3BO3中Eu^3＋和Sm^3＋的光致发光[J].光谱学与光谱分析,1996,16(2):9-14. |
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| 作者姓名： | 彭夷安 林建华 |
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| 作者单位： | 湖南医学高等专科学校，北京大学化学系 |
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| 基金项目： | 北京大学稀土材料化学及应用国家开放实验室资助 |
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| 摘 要： | 研究了紫外光激发下，（ＬａＯ）３ＢＯ３基质中Ｅｕ＾３＋和Ｓｍ＾３＋的光谱性质，Ｅｕ＾３＋和Ｓｍ＾３＋的电荷迁移激发带及发光强度随组成和结构变化的规律性，并探讨了Ｅｕ＾３＋和Ｓｍ＾３＋自身浓度猝灭的机理。
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| 关 键 词： | 光致发光 浓度猝灭 铕 钐 镧 硼酸盐 |
PHOTOLUMINESCENCE OF Eu3+AND Sm3+ IN (LaO)3BO3 |
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| PENG Yian.PHOTOLUMINESCENCE OF Eu3+AND Sm3+ IN (LaO)3BO3[J].Spectroscopy and Spectral Analysis,1996,16(2):9-14. |
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| Authors: | PENG Yian |
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| Abstract: | The Eu3+ and Sm3+-doped (LaO)3BO3 have been synthesized with solid state reaction. With the increase of Eu3+ doping level, the charge transfer excitation band (CTB) of Eu3+shifts to shorter wavelength and the red-to-orange intensity ratio I(5D,-7F2)/I(5D0-7F1) of Eu3+emission exhibits a convex behavior with a maximun at about xEu= 0. 2. In comparison with the X-ray diffraction patterns of these materials, it has been concluded that these phenomena are mainly due to the effect of structure distortion. The concentration dependence of the luminescence intensity of Eu3+ and Sm3+ in this material has also been studied and could be explained as an exchange interaction for Eu3+ and dipole-quadrupole interacnon for Sm3+ respectively. |
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