Scintillation and luminescence properties of undoped and europium-doped CaZrO3 crystals
Scintillation and luminescence properties of undoped and europium-doped CaZrO3 crystals
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DOI：
10.1016/j.jlumin.2020.117231
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发表时间：
2020-07
影响因子：
3.6
通讯作者：
H. Fukushima;D. Nakauchi;Takumi Kato;N. Kawaguchi;T. Yanagida
中科院分区：
文献类型：
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作者：
H. Fukushima;D. Nakauchi;Takumi Kato;N. Kawaguchi;T. Yanagida
采用氙灯浮区法合成了未掺杂和掺Eu的CaZrO 3晶体，并对其光致发光和闪烁性能进行了研究。未掺杂的CaZrO 3具有较宽的PL谱，峰位于410 nm附近，而Eu掺杂的CaZrO 3由于Eu 3+的4f-4f跃迁而具有较尖锐的发射线。未掺杂的CaZrO 3的PL衰减时间常数为77.8 ns，而Eu掺杂的CaZrO 3表现出典型的Eu 3+的4f-4f跃迁。在X射线诱导闪烁谱中，未掺杂的CaZrO 3在480 nm处有较宽的发射峰，而Eu掺杂的CaZrO 3在600 nm附近有较宽的发射峰。Eu掺杂的CaZrO 3的余辉能级低于未掺杂的CaZrO 3。
Undoped and Eu-doped CaZrO3crystals were synthesized by the xenon lamp floating zone method, and photoluminescence (PL) and scintillation properties were investigated. The undoped CaZrO3exhibited a broad PL spectrum peaking at around 410 nm while the Eu-doped CaZrO3showed some sharp emission lines due to 4f-4f transition of Eu3+. The PL decay time constant of the undoped CaZrO3was 77.8 ns while the Eu-doped CaZrO3showed a typical value of 4f-4f transition of Eu3+. In X-ray induced scintillation spectra, undoped CaZrO3showed a broad emission at 480 nm, and Eu-doped ones exhibited some emission lines at around 600 nm. The afterglow levels of the Eu-doped CaZrO3were lower than that of the undoped one.