The Harmful Effects of Sintering Aids in Pr:LuAG Optical Ceramic Scintillator

The Harmful Effects of Sintering Aids in Pr:LuAG Optical Ceramic Scintillator
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Pr:LuAG光学陶瓷闪烁体中烧结助剂的有害影响

DOI:
10.1111/j.1551-2916.2012.05275.x
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发表时间:
2012-07
影响因子:
3.9
通讯作者:
Vedda, Anna
Vedda, Anna
中科院分区:
材料科学2区
文献类型:
--
作者:
Moretti, Federico;Shi, Yun;Feng, Xiqi;Pan, Yubai;Li, Jiang;Zeng, Yanping;Nikl, Martin;Krasnikov, Aleksei;Vedda, Anna

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我们研究了Pr掺杂Lu3Al5O12(Pr:LuAG)光学陶瓷的闪烁特性和能量俘获过程,特别关注烧结助剂的影响。在不使用烧结助剂的情况下,获得了具有与单晶相当的良好透射率和闪烁性能的陶瓷。它们的引入引起了透明度的改善,然而,伴随着光产额和时间衰减方面的闪烁性能的恶化。我们解释的结果,讨论的aliovalent烧结剂上形成的点缺陷作为陷阱的作用,影响运输的电荷载流子的发光中心。
We investigate scintillation properties and energy trapping processes in Pr-doped Lu3Al5O12 (Pr:LuAG) optical ceramics, specifically focusing on the effects of sintering aids. Ceramics with good transmittance and scintillation properties comparable with those of single crystals were obtained without the use of sintering aids. Their introduction caused a transparency improvement, accompanied, however, by a deterioration of scintillation properties in terms of light yield and time decay. We interpret the results, discussing the role of aliovalent sintering agents on the formation of point defects acting as traps affecting the transport of charge carriers to the luminescence centers.
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