Study on Spectra Properties of Luminophor CBC:Eu2+ and Host CBC
来源期刊：Journal of Rare Earths2006年第S2期
论文作者：李亮 董红军 常树岚
文章页码：390 - 394
摘 要：Eu3+ was doped host CaO-B2O3-CaCl2 （CBC）. A series of fluorescent materials were gained by hydrothermal method and high temperature solid method, which have different emission of Eu3+ and Eu2+. The materials have both red and blue emission at 800 ℃; Characteristic emission of Eu2+ ion is sensitive to 365 nm UV at 900 ℃, whose emission intensity is 7～22 times of 254 nm UV. Stokes displacement of CBC∶Eux2+ and host are between 5200 and 6000 cm-1. It is found that emission spectra of host CBC itself is located at 464 nm （emission intensity is maximal at 900 ℃）, which is similar to Eu2+in luminophor comes from 4f65d1→8S7/2 at 466 nm （differ 2 nm）. When doped other ions （Tb, Er, Sm）, whose characteristic emissions are very weak but emission located at 460 nm is strong. It may have energy transfer from rare earth ions to host. It shows that CBC host has its particular properties. SEM microstructure reveals differences of morphology because of constitutes and preparation method.
李亮，董红军，常树岚
摘 要：Eu3+ was doped host CaO-B2O3-CaCl2 （CBC）. A series of fluorescent materials were gained by hydrothermal method and high temperature solid method, which have different emission of Eu3+ and Eu2+. The materials have both red and blue emission at 800 ℃; Characteristic emission of Eu2+ ion is sensitive to 365 nm UV at 900 ℃, whose emission intensity is 7～22 times of 254 nm UV. Stokes displacement of CBC∶Eux2+ and host are between 5200 and 6000 cm-1. It is found that emission spectra of host CBC itself is located at 464 nm （emission intensity is maximal at 900 ℃）, which is similar to Eu2+in luminophor comes from 4f65d1→8S7/2 at 466 nm （differ 2 nm）. When doped other ions （Tb, Er, Sm）, whose characteristic emissions are very weak but emission located at 460 nm is strong. It may have energy transfer from rare earth ions to host. It shows that CBC host has its particular properties. SEM microstructure reveals differences of morphology because of constitutes and preparation method.
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