Development of Dy-doped CaHfO3 single crystal scintillator for X-ray detectors

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Optical Materials Pub Date : 2024-10-13 DOI:10.1016/j.optmat.2024.116276

Yusuke Endo , Kensei Ichiba , Daisuke Nakauchi , Kai Okazaki , Kenichi Watanabe , Takumi Kato , Noriaki Kawaguchi , Takayuki Yanagida

引用次数: 0

Abstract

Dy:CaHfO₃ single crystals were synthesized by the floating zone technique and examined for their photoluminescence and scintillation properties. Under excitation at 350 nm, the 3.0 % Dy:CaHfO₃ showed the highest quantum yield of 72.5 % among all the samples. Under X-ray irradiation, all the samples showed multiple emission peaks at 480, 575, and 670 nm associated with the 4f–4f transitions of Dy³⁺. Pulse height spectra of ¹³⁷Cs as a

γ

-ray source revealed 3.0 % Dy:CaHfO₃ showed the highest light yield of 20,000 photons/MeV among the samples.

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开发用于 X 射线探测器的掺钕 CaHfO3 单晶闪烁体

通过浮区技术合成了 Dy:CaHfO3 单晶，并对其光致发光和闪烁特性进行了检测。在 350 纳米波长的激发下，3.0% Dy:CaHfO3 的量子产率在所有样品中最高，达到 72.5%。在 X 射线照射下，所有样品都在 480、575 和 670 纳米波长处显示出与 Dy3+ 的 4f-4f 转变相关的多个发射峰。137Cs 作为γ射线源的脉冲高度光谱显示，在所有样品中，3.0% Dy:CaHfO3 的光产率最高，达到 20,000 光子/兆电子伏。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.