Preparation and scintillation properties of Eu3+-doped high crystallinity tellurite glass ceramics

• Published in: Optical materials 2024-11, Vol.157, p.116406, Article 116406
• Main Authors: Luo, Xin, Hong, Zhi, Li, Dechen, Hou, Hailan, Lai, Fenqin, You, Weixiong, Huang, Jianhui
• Format: Article
• Language: English
• Subjects: Glass ceramic; High crystallinity; Luminescence properties
• ISSN: 0925-3467
• DOI: 10.1016/j.optmat.2024.116406

In this study, a high-crystallinity glass-ceramic scintillator doped with Eu³⁺ containing Bi₂Te₄O₁₁ nanocrystals was prepared using a traditional melt crystallization method. The optimal heat treatment conditions, phase structure, and luminescent properties of the glass-ceramics were systematically investigated using various characterization techniques, including DSC, XRD, SEM, and spectrophotometry. To achieve glass-ceramic samples with high transmittance and excellent luminescent performance, the optimal heat treatment process was determined to be 500 °C for 10 min. The final sample was found to have a density of 5.9 g/cm³ and a crystallinity of 70 %. Strong orange-red light emission was exhibited by the glass-ceramic under both 465 nm light and X-ray excitation. The maximum integral X-ray excited luminescence (XEL) intensity was found to reach 20.2 % of that of the commercial Bi4Ge3O12 (BGO) scintillation crystal. It is indicated by the research that Eu³⁺-doped high-crystallinity tellurate glass-ceramics are promising candidate materials for scintillators in the field of X-ray detection. •Prepared Eu³⁺-doped tellurite glass-ceramic with a crystallinity of 70%.•Under 465 nm excitation, the glass exhibits strong orange-red luminescence.•Its maximum XEL intensity was 20.2% of commercial Bi4Ge3O12 (BGO) crystals.•Eu3+-doped tellurite glass-ceramics are promising X-ray scintillator materials.