Design, simulation, elaboration and luminescence of Tb3+-doped Ba0.84Gd0.16F2.16 fluoroaluminosilicate scintillating glass ceramics. Issue 13 (October 2021)

• Record Type: Journal Article
• Authors: Chen, SunYueZi; Zhang, WenNa; Teng, LiMing; Chen, Jing; Sun, XinYuan; Guo, Hai; Qiao, XuSheng
• Is Part Of: Journal of the European Ceramic Society. Volume 41:Issue 13(2021)
• Page Start: 6722
• Page End: 6728
• Publication Date: 2021-10
• Subjects: Glass ceramics scintillators -- Molecular dynamics simulation -- X-ray excited luminescence -- Phase separation -- Ba0.84Gd0.16F2.16Tb3+; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2021.05.064
• Languages: English
• ISSNs: 0955-2219

Abstract

Highlights: Tb 3+ -doped Ba0.84 Gd0.16 F2.16 GCs with excellent performances were designed. Molecular dynamics simulation was used to simulate the phase separation process. The volume fraction of nanocrystals in GCs is high as 32 % in GC620. The quantum efficiency reaches to 64 % in GC620 excited by UV light. The XEL intensity was 192 % of that of BGO commercial scintillator. Abstract: Extensive researches on scintillators have been executed to satisfy the excellent radiation detection materials in broad applications. However, practical application of conventional scintillators is limited due to the limitations of high cost, time-consuming fabrication process and insufficient radioluminescence. Herein, high density precursor glass doped with Tb 3+ was designed to absorb X-ray efficiently and produce green emission. Molecular dynamics simulation was used to simulate the phase separation process in melting process. Then, Tb 3+ -doped Ba0.84 Gd0.16 F2.16 glass ceramics (GCs) with excellent structural and optical properties were elaborated by melt quenching technic and further heat treating. Their structural properties, photoluminescence (PL) and X-ray excited luminescence (XEL) were explored detailedly. The internal quantum efficiency of PL is 64 % in GCs. The XEL intensity is 192 % of that of Bi4 Ge3 O12 (BGO) commercial scintillator. Our results suggest that Ba0.84 Gd0.16 F2.16 :Tb 3+ GCs might have potential application in X-ray detection.