Crystal growth and optical properties of LuYAG:Ce single crystal

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• 作者：Juqing Di^a ; ^b ; ^{418590478@163.com} ; Xiaodong Xu^c ; ^{xdxu79@yahoo.com.cn} ; Changtai Xia^a ; Dongzhen Li^a ; ^b ; Dahua Zhou^a ; ^b ; Feng Wu^c ; Jun Xu^c
• 关键词：A1. Spectral properties ; A2. Czochralski method ; B1. Ce ; B1. Scintillator materials
• 刊名：Journal of Crystal Growth
• 出版年：2012
• 期刊代码：49_00220248
• 类别：ch
• 出版时间：15 July, 2012
• 卷：351
• 期：1
• 页码：165-168
• 文件大小：555 K

摘要

Crystals of Ce³⁺-doped (Lu_xY_1鈭?em>x)₃Al₅O₁₂ (LuYAG) have been grown and studied by X-ray powder diffraction, emission spectroscopy, excitation spectroscopy and X-ray excited fluorescence spectroscopy. The X-ray powder diffraction pattern revealed that the as-grown LuYAG:Ce crystal possessed the garnet structure. Compared with Ce³⁺-doped Y₃Al₅O₁₂ (YAG), the absorption bands associated with the 4f-5d transition shifted to shorter wavelengths, the emission band that originated from a transition from the lowest 5d level to the ²F ground state of the Ce³⁺ ions shifted to the blue, which was probably due to a larger Stokes shift of the emission, and the reduction of relative intensity of antisite defect emission in the X-ray excited fluorescence spectra revealed that introducing Lu ions into YAG could reduce the antisite defect.