Growth and Scintillation Properties of Eu2+-Doped Cs2BaBr4 Crystals

doi:10.16553/j.cnki.issn1000-985x.2025.0103

Abstract

Abstract: Cs₂BaBr₄:x% Eu²⁺（x=1， 2， 4， 8） crystals were successfully grown by Bridgman method. Phase analysis was performed by X-ray powder diffraction and thermogravimetric testing.The results indicate that the crystals are congruently melting compounds. As the concentration of Eu²⁺ increases， the diffraction peaks shift toward smaller angles. The optical and scintillation properties of the crystals were investigated by measuring the optical transmittance， photo luminescence， X-ray induced luminescence and decay time. And a comparative analysis of the hygroscopicity of the crystal with Rb₂BaBr₄ and LaBr₃ crystals was conducted. The results reveal that crystals doped with different concentrations all exhibit good optical transmittance， and the optical transmittance of Cs₂BaBr₄:2% Eu²⁺ crystal is up to 87.5%. Under the excitation of ultraviolet light and X-rays， these crystals exhibit an emission peak in the range of 425~445 nm. Under ultraviolet excitation， the decay time of crystals with different doping concentrations is 2.10， 1.57， 2.19， and 2.76 μs， respectively. Cs₂BaBr₄:2% Eu²⁺ crystal exhibits the best scintillation performance. In addition， Cs₂BaBr₄ crystals exhibit low hygroscopicity.

Key words: Cs₂BaBr₄ crystal; scintillation crystal; Bridgman method; scintillation property; photo luminescence; X-ray induced luminescence; decay time; hygroscopicity

CLC Number:

O734

YIN Jie, ZHANG Xiaoqiang, CHEN Can, PAN Jianguo. Growth and Scintillation Properties of Eu²⁺-Doped Cs₂BaBr₄Crystals[J]. Journal of Synthetic Crystals, 2025, 54(11): 1931-1936.

Figures/Tables 10

Fig.1 XRD patterns of Cs2BaBr4:x%Eu2+ polycrystal powder

Fig.2 TG-DTA curves of Cs2BaBr4:Eu2+ crystal

Fig.3 Photographs of crystal. （a） Cs2BaBr4:2%Eu2+；（b） Cs2BaBr4:x%Eu2+ crystals after cut and polished

Fig.4 （a） Optical transmission curves of Cs2BaBr4:x%Eu2+ single crystals with a thickness of 2 mm；（b） Tauc plots for calculation of indirect energy band gap of Cs2BaBr4:xEu2+ single crystals

Fig.5 Optical properties of Cs2BaBr4:x%Eu2+ crystals. （a） Excitation spectra；（b） excitation and emission spectra of x=2 sample；（c） emission spectra

Fig.6 Relationship between the intensity of excitation peak and emission peak and the change of Eu2+ concentration

Fig.7 Fluorescence decay curves of Cs2BaBr4：x%Eu2+ crystals

Fig.8 X-ray stimulated luminescence spectra of Cs2BaBr4:x%Eu2+ crystals （a） and CdWO4， Cs2BaBr4:2%Eu crystals （b）

Fig.9 Hygroscopic nature of Cs2BaBr4， Rb2BaBr4 and LaBr3 crystals

Fig.10 Cs2BaBr4 powder exposed to air

References 16

[1]	HALL J M， ASZTALOS S， BILTOFT P， et al. The nuclear car wash： neutron interrogation of cargo containers to detect hidden SNM［J］. Nuclear Instruments and Methods in Physics Research Section B： Beam Interactions with Materials and Atoms， 2007， 261（1/2）： 337-340.
[2]	VAN EIJK C W E. Inorganic scintillators in medical imaging［J］. Physics in Medicine and Biology， 2002， 47（8）： R85-106.
[3]	ITOH T， YANAGIDA T， KOKUBUN M， et al. A 1-dimensional γ-ray position sensor based on GSO:Ce scintillators coupled to a Si strip detector［J］. Nuclear Instruments and Methods in Physics Research Section A： Accelerators， Spectrometers， Detectors and Associated Equipment， 2007， 579（1）： 239-242.
[4]	STEINGRIMSSON B. Geothermal well logging： geological wireline logs and fracture imaging［J］. Short Course on Geothermal Drilling， 2011， 108（9）： 1-11.
[5]	TSEREMOGLOU S， MICHAIL C， VALAIS I， et al. Evaluation of cerium-doped lanthanum bromide （LaBr₃:Ce） single-crystal scintillator’s luminescence properties under X-ray radiographic conditions［J］. Applied Sciences， 2023， 13（1）： 419.
[6]	LEBLANS P， STRUYE L， ELEN S， et al. X-ray enhancement of CsI:Eu²⁺ radioluminescence［J］. Journal of Luminescence， 2015， 165： 68-76.
[7]	SAKAI T， KOSHIMIZU M， FUJIMOTO Y， et al. Luminescence and scintillation properties of Tl- and In-doped CsCl crystals［J］. Japanese Journal of Applied Physics， 2017， 56（6）： 062601.
[8]	YAHABA N， KOSHIMIZU M， SUN Y， et al. X-ray detection capability of a Cs₂ZnCl₄ single-crystal scintillator［J］. Applied Physics Express， 2014， 7（6）： 062602.
[9]	SUGAWARA K， KOSHIMIZU M， YANAGIDA T， et al. Luminescence and scintillation properties of Ce-doped Cs₂ZnCl₄ crystals［J］. Optical Materials， 2015， 41： 53-57.
[10]	BOURRET-COURCHESNE E D， BIZARRI G A， BORADE R， et al. Crystal growth and characterization of alkali-earth halide scintillators［J］. Journal of Crystal Growth， 2012， 352（1）： 78-83.
[11]	STAND L， ZHURAVLEVA M， CHAKOUMAKOS B， et al. Scintillation properties of Eu²⁺-doped KBa₂I₅ and K₂BaI₄ ［J］. Journal of Luminescence， 2016， 169： 301-307.
[12]	TAKAHASHI K， KIMURA H， NAKAUCHI D， et al. Photoluminescence and scintillation properties of undoped and Tl-doped Cs₂BaBr₄ crystals［J］. Radiation Measurements， 2020， 132： 106260.
[13]	APPLEBY G A， EDGAR A， WILLIAMS G V M. Structure and photostimulated luminescent properties of Eu-doped M₂BaX₄ （M=Cs， Rb； X=Br， Cl）［J］. Journal of Applied Physics， 2004， 96（11）： 6281-6285.
[14]	LINDSEY A C， ZHURAVLEVA M， STAND L， et al. Crystal growth and characterization of europium doped KCaI₃， a high light yield scintillator［J］. Optical Materials， 2015， 48： 1-6.
[15]	李　嫚，耿巨峰，王昊宇，等. Eu²⁺掺杂KCaCl₃晶体的生长及发光性能［J］. 无机化学学报， 2021， 37（3）： 443-447.
	LI M， GENG J F， WANG H Y， et al. Growth and luminescence properties of Eu²⁺ doped KCaCl₃ crystal［J］. Chinese Journal of Inorganic Chemistry， 2021， 37（3）： 443-447 （in Chinese）.
[16]	殷　洁，张小强，陈　灿，等. 掺铈Cs₂BaBr₄晶体的生长和闪烁性能研究［J］. 人工晶体学报， 2024， 53（5）： 760-765.
	YIN J， ZHANG X Q， CHEN C， et al. Growth and scintillation properties of cerium-doped Cs₂BaBr₄ crystal［J］. Journal of Synthetic Crystals， 2024， 53（5）： 760-765 （in Chinese）.

Growth and Scintillation Properties of Eu²⁺-Doped Cs₂BaBr₄Crystals

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