Abstract In this work, Yb-doped Y3Al5O12 [yttrium aluminum garnet (YAG)] crystals and Ca co-doped Yb:YAG crystals were grown by the Czochralski (CZ) method. The chemical formulas of the two crystals are (Yb0.1Y0.9)3Al5O12 and (Ca0.001Yb0.1Y0.899)3Al5O12, respectively. The structural, optical and luminescent properties of the Yb:YAG and Ca, Yb:YAG crystals were investigated by X-ray rocking curve, X-ray diffraction, Raman spectra, UV–Visble-NIR absorption spectra and X-ray fluorescence. X-ray fluorescence spectrum with two emission peaks at 330 nm and 490 nm were observed in the two kinds of crystals, which would increase slightly after the annealing. Comparing to the Yb:YAG crystal, Ca co-doped Yb:YAG crystal behaved the better luminescent intensity without changing the crystal structure and vibrational modes. This indicates that by doping Ca2+ in Yb:YAG crystal may be an appropriate way to enhance the luminescent property of the scintillation crystal.

中文翻译：

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Yb:YAG和Ca共掺杂Yb:YAG超快闪烁晶体的生长和发光特性

摘要 在这项工作中，Yb 掺杂的 Y3Al5O12 [钇铝石榴石 (YAG)] 晶体和 Ca 共掺杂 Yb:YAG 晶体通过 Czochralski (CZ) 方法生长。两种晶体的化学式分别为(Yb0.1Y0.9)3Al5O12和(Ca0.001Yb0.1Y0.899)3Al5O12。通过X射线摇摆曲线、X射线衍射、拉曼光谱、UV-Visble-NIR吸收光谱和X射线荧光研究Yb:YAG和Ca、Yb:YAG晶体的结构、光学和发光特性。在两种晶体中均观察到在 330 nm 和 490 nm 处有两个发射峰的 X 射线荧光光谱，退火后发射峰略有增加。与 Yb:YAG 晶体相比，Ca 共掺杂 Yb:YAG 晶体在不改变晶体结构和振动模式的情况下表现出更好的发光强度。