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Photoluminescence, scintillation and thermoluminescence properties of Ce-doped SrLaAl3O7 crystals synthesized by the optical floating zone method
Optical Materials ( IF 3.8 ) Pub Date : 2021-01-09 , DOI: 10.1016/j.optmat.2020.110782
Kenta Igashira , Daisuke Nakauchi , Takumi Kato , Noriaki Kawaguchi , Takayuki Yanagida

Photoluminescence, scintillation and thermoluminescence properties of undoped and Ce-doped SrLaAl3O7 crystals grown using the optical Floating Zone technique were examined. An intense broad emission peak at 400 nm are observed from photoluminescence excitation-emission maps and scintillation spectra of the Ce-doped SrLaAl3O7 crystals, with the origin is ascribed to the 5d-4f transitions of Ce3+. The primary decay of the Ce-doped and undoped SrLaAl3O7 crystals are attributable to the Ce3+ ions and intrinsic luminescence, respectively. The 3.0% Ce-doped SrLaAl3O7 crystal shows the highest light yield of 760 ph/5.5 MeV-α among the investigated samples based on pulse height analysis under α-rays excitation from 241Am.



中文翻译:

光学浮区法合成Ce掺杂SrLaAl 3 O 7晶体的光致发光,闪烁和热致发光特性

研究了使用光学浮区技术生长的未掺杂和Ce掺杂的SrLaAl 3 O 7晶体的光致发光,闪烁和热致发光特性。从掺杂Ce的SrLaAl 3 O 7晶体的光致发光激发-发射图和闪烁光谱观察到400nm处的强烈的宽发射峰,其起源归因于Ce 3+的5d-4f跃迁。掺杂Ce和未掺杂SrLaAl 3 O 7晶体的主要衰变分别归因于Ce 3+离子和固有发光。3.0%Ce掺杂SrLaAl 3 O 7241 Am的α射线激发下,基于脉冲高度分析,在所研究的样品中,该晶体显示出最高的760 ph / 5.5MeV-α光产率。

更新日期:2021-01-10
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