Fluorophosphate glasses doped with Eu3+ and Dy3+ for X-ray radiography

Author(s)

Pinto, Iago Carvalho ^[1] ; Galleani, Gustavo ^[1] ; Jacobsohn, Luiz Gustavo ^[2] ; Ledemi, Yannick ^[3] ; Messaddeq, Younes ^[3] ; Stucchi de Camargo, Andrea Simone ^[1]

Affiliation

^[1] Univ Sao Paulo, Sao Carlos Inst Phys, Av Trabalhador Saocarlense 400, BR-13566590 Sao Carlos, SP - Brazil

^[2] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC 29634 - USA

^[3] Univ Laval, Ctr Opt Photon & Laser COPL, 2375 Rue Terrasse, Quebec City, PQ G1V 0A6 - Canada

• Document type: Journal article
• Source: Journal of Alloys and Compounds; v. 863, MAY 15 2021.
• Web of Science Citations: 0

Abstract

In this work, fluorophosphate glass samples with the composition 35NaPO(3)-30Ba(PO3)(2)-25MgF(2)-(10-x) YF3-x{[}EuF3 or Dy2O3] with x = 0-4.0 mol% EuF3, or x = 0-1.0 mol% Dy2O3, were fabricated by the melt quenching technique. The glasses were characterized from the structural, thermal and optical-spectroscopic points of view. Emission spectra were measured in the visible range upon UV excitation. Luminescence decay curves were registered by monitoring the most intense emissions of Eu3+ (D-5(0)-> F-7(2)) and of Dy3+ (F-4(9/2)-> H-6(13/2)) in the red and green, respectively, and from them the average lifetime values of the excited states D-5(0) of Eu3+ (2.5 ms) and F-4(9/2) of Dy3+ (0.71 ms) were determined. Emission spectra measured under variable excitation power yielded calibration curves for Eu3+ and Dy3+-doped glasses. The response to X-ray excitation was evaluated through radioluminescence measurements. The results indicate the promising application of these glasses in scintillators and for X-ray sensing devices. (C) 2020 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 18/03931-9 - Preparation of fluoride-phosphate glass and glass-ceramics doped with rare-earth ions for potential use as radiation detectors
• Grantee: Gustavo Galleani
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
• Grantee: Edgar Dutra Zanotto
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC