Effect of reducing Lu3+ content on the fabrication and scintillation properties of non-stoichiometric Lu3−xAl5O12:Ce ceramics
Source abstract
Abstract
Lu3-xAl5O12:Ce optical ceramics (Lu(3-x)AG:Ce, x = 1, 2, 3 and 4 at.%, respectively) with Lu3+ compositions ranging from 1 to 4 at.% below stoichiometry content were fabricated by solid state reaction method and further optimized by an air-annealing process. The effect of Lu3+ deficiency on the optical, luminescence and scintillation properties of such a non-stoichiometric Lu3-xAl5O12:Ce ceramics was investigated. Significant influence in the material densification was found leading to strong changes in the transparency, radioluminescence (RL) and scintillation response of these ceramics. Within the range of 1 4 at.% Lu3+ deficiency, Lu-Al antisite defects were suppressed effectively and the Lu(3-x)AG:Ce ceramics displayed an extremely high RL intensity which reaches similar to 4 times higher than that of the latest commercial LuAG:Ce single crystals while its transparency deteriorated. The microstructure, presence of foreign phases and charge traps acting in scintillation mechanism were also Characterized by means of SEM, back scattered electron imaging and thermoluminescence techniques, respectively. (C) 2016 Elsevier B.V. All rights reserved.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Radiation Detection and Scintillator Technologies · Luminescence Properties of Advanced Materials · Atomic and Subatomic Physics Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Recent R&D trends in inorganic single-crystal scintillator materials for radiation detection10.1002/adom.201400571 ↗
2. Quantum-dot/organic semiconductor composites for radiation detection10.1002/adma.200501434 ↗
3. Crystal composition and afterglow in mixed silicates: the role of melting temperature10.1103/PhysRevApplied.4.024009 ↗
4. Lecoq · 2006
5. Development of phase-separated scintillators with light-guiding properties10.1002/adma.201201962 ↗
6. Scintillating metal-organic frameworks: a new class of radiation detection materials10.1002/adma.200801753 ↗
7. Effects of Ca2+ co-doping on the scintillation properties of LSO: Ce10.1109/TNS.2007.913486 ↗
8. Effect of Mg2+ co-doping on the scintillation performance of LuAG: Ce ceramics10.1002/pssr.201308199 ↗
9. Fabrication of transparent cerium-doped lutetium aluminum garnet (LuAG:Ce) ceramics by a solid-state reaction method10.1111/j.1551-2916.2005.00554.x ↗
10. Fabrication of transparent cerium-doped lutetium aluminum garnet ceramics by co-precipitation routes10.1111/j.1551-2916.2006.01036.x ↗
11. Multiple synthesis routes to transparent ceramic lutetium aluminum garnet10.1016/j.scriptamat.2007.07.017 ↗
12. Effect of sintering temperature on the transparency and mechanical properties of lutetium aluminum garnet fabricated by spark plasma sintering10.1016/j.jeurceramsoc.2012.04.020 ↗
13. Luminescence and scintillation properties of Lu3Al5O12 nanoceramics sintered by SPS method10.1016/j.optmat.2016.01.024 ↗
14. Scintillation characteristics of Lu3Al5O12:Ce optical ceramics10.1063/1.2433706 ↗
15. Comparative study of transparent ceramic and single crystal Ce doped LuAG scintillators10.1016/j.radmeas.2011.03.039 ↗
16. Defect engineering in Ce-doped aluminum garnet single crystal scintillators10.1021/cg501005s ↗
17. Evidence and consequences of Ce4+ in LYSO: Ce, Ca and LYSO: Ce, Mg single crystals for medical imaging applications10.1109/TNS.2013.2269700 ↗
18. Czochralski growth and characterisation of large Ce3+:Lu2SiO5 single crystals co-doped with Mg2+ or Ca2+ or Tb3+ for scintillators10.1016/j.jcrysgro.2004.11.290 ↗
19. Fabrication and scintillation performance of nonstoichiometric LuAG: Ce ceramics10.1111/jace.13305 ↗
20. Optical, luminescence and scintillation characteristics of non-stoichiometric LuAG: Ce ceramics10.1016/j.jlumin.2015.08.034 ↗
21. Energy resolution studies of Ce- and Pr-doped aluminum and multicomponent garnets: the escape and photo-peaks10.1016/j.jlumin.2015.02.023 ↗
22. Color centers and charge state change in Ce:YAG crystals grown by temperature gradient techniques10.1016/j.jcrysgro.2005.09.029 ↗
23. The radiation hardness of Pr:LuAG scintillating ceramics10.1016/j.ceramint.2013.09.052 ↗
24. Defect-property correlations in garnet crystalsV. Energy-transfer in luminescent yttrium aluminum-yttrium iron-garnet solid-solutions10.1063/1.344136 ↗
25. The role of cerium variable charge state in the luminescence and scintillation mechanism in complex oxide scintillators: the effect of air annealing10.1016/j.jlumin.2015.01.008 ↗
26. Band-gap engineering for removing shallow traps in rare-earth Lu3 Al 5O12 garnet scintillators using Ga3+ doping10.1103/PhysRevB.84.081102 ↗
27. Scintillation properties of LuAG:Ce, YAG:Ce and LYSO:Ce crystals for gamma-ray detection10.1109/TNS.2009.2033994 ↗
28. Probing grain boundaries in ceramic scintillators using x-ray radioluminescence microscopy10.1063/1.3676222 ↗
29. Influence of non-stoichiometry on solid-state reactive sintering of YAG transparent ceramics10.1016/j.jeurceramsoc.2015.04.038 ↗
30. Shallow traps and radiative recombination processes in Lu3Al5 O12:Ce single crystal scintillator10.1103/PhysRevB.76.195121 ↗
31. Studies of low temperature thermoluminescence of GAGG:Ce and LuAG:Pr scintillator crystals using the T-max-T-stop method10.1016/j.jlumin.2014.05.035 ↗
32. Thermoluminescence of Zr-codoped Lu3 Al5 O12:Ce crystals10.1002/pssa.200306447 ↗
33. Long-lasting phosphorescence study on Y3Al5O12 doped with different concentrations of Ce∼(3+)10.1016/S1002-0721(10)60473-5 ↗
34. A study of radiation effects on LuAG:Ce(Pr) co-activated with Ca10.1016/j.jcrysgro.2015.08.019 ↗