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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Cerium concentration and temperature dependence of the luminescence of Lu_2Si_2O_7:Ce scintillator
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Cerium concentration and temperature dependence of the luminescence of Lu_2Si_2O_7:Ce scintillator

机译：铈浓度和Lu_2Si_2O_7：Ce闪烁体发光的温度依赖性

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摘要

The crystals of (Lu_(1-x)Ce_x)_2Si_2O_7 (LPS) (x = 0.003,0.005,0.0075,0.01 and 0.013) are grown by Czochralski (Cz) method. The scintillation and optical properties of these LPS:Ce crystals were studied and compared systematically, mainly focused on the absorption, photoluminescence (PL) and photoluminescence excitation (PLE) and decay time. It is found that the self absorption of LPS:Ce is increased as the cerium doping concentration increases; the PLE curves of LPS:Ce samples are influenced by the both cerium doping concentrations and sample thickness. Specially, thicker and higher cerium doped LPS:Ce, i.e. the stronger self absorption, will lead to incomplete PLE curves. The temperature dependence of luminescence of LPS:0.3%Ce, including the decay time, PLE and PL properties, is investigated.
机译：通过切克劳斯基（Cz）方法生长（Lu_（1-x）Ce_x）_2Si_2O_7（LPS）（x = 0.003,0.005,0.0075,0.01和0.013）的晶体。对这些LPS：Ce晶体的闪烁特性和光学性质进行了系统的研究和比较，主要集中在吸收，光致发光（PL）和光致发光激发（PLE）和衰减时间上。发现随着铈掺杂浓度的增加，LPS：Ce的自吸收增加。 LPS：Ce样品的PLE曲线受铈掺杂浓度和样品厚度的影响。特别是，铈掺杂的LPS：Ce的厚度更大，含量更高，即较强的自吸收性，将导致PLE曲线不完整。研究了LPS：0.3％Ce的发光的温度依赖性，包括衰减时间，PLE和PL特性。

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