Photoluminescence and Scintillation Properties of Ce3+-Doped GdBO3 Nanoscintillator Sensors: Effect of Some Synthesis Parameters
Lakhdar Guerbous, Mourad Seraiche, Ahmed Rafik Touil, Zohra Akhrib, Rachid Mahiou
TL;DR
This study explores how synthesis conditions affect the optical and scintillation properties of Ce3+-doped GdBO3 nanoscintillators.
Contribution
The paper provides a systematic analysis of how pH and annealing temperature influence the structural and luminescent properties of Ce3+-doped GdBO3.
Findings
All samples crystallized in the hexagonal GdBO3 vaterite phase.
PL quantum yield decreased at annealing temperatures above 800 °C due to Ce3+ lattice incorporation.
Scintillation decay profiles revealed timing kinetics parameters for optimization.
Abstract
Cerium (Ce3+)-doped gadolinium orthoborate (GdBO3) phosphor powders were synthesized via an aqueous sol–gel route, with systematic variation in solution pH (2, 5, and 8) and annealing temperature (600–1200 °C, in 100 °C increments) to investigate their influence on structural, optical, and scintillation properties. The materials were comprehensively characterized using thermogravimetric and differential thermal analysis (TG–DTA) to assess thermal behavior, X-ray diffraction (XRD) for crystal structure determination, Fourier-transform infrared spectroscopy (FTIR) for vibrational analysis, and both photoluminescence (PL) and radioluminescence (RL) spectroscopies to evaluate optical and scintillation performance. All samples crystallized in the hexagonal GdBO3 vaterite phase (space group P63/mcm). The PL and RL emission spectra were consistent with the Ce3+ 5d–4f transitions, and…
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Taxonomy
TopicsRadiation Detection and Scintillator Technologies · Luminescence Properties of Advanced Materials · Advanced Semiconductor Detectors and Materials