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Epitaxial growth of single crystalline film scintillators based on the Pr3+ doped solid solution of Lu3Al5−xGaxO12 garnet
- Source :
- CrystEngComm. 19:7031-7040
- Publication Year :
- 2017
- Publisher :
- Royal Society of Chemistry (RSC), 2017.
-
Abstract
- UV emitting scintillating screens based on single crystalline films (SCFs) of Lu3Al5−xGaxO12:Pr garnet have been developed by the liquid phase epitaxy (LPE) growth method onto Y3Al5O12 (YAG) substrates using a lead-free BaO based flux. The absorbance, luminescence and scintillation properties of these SCFs have been investigated depending on the Ga content in the x = 0–1.9 range. We have found that the absorption and luminescence spectra of Pr3+ ions as well as the scintillation light yield (LY) and decay kinetics of Lu3Al5−xGaxO12 SCFs are non-linearly affected by the gallium concentration x in the mentioned solid solution due to preference for the distribution of Ga3+ and Al3+ ions between the tetrahedral and octahedral positions of the garnet host, respectively. The best scintillation properties of Lu3Al5−xGaxO12:Pr SCFs are achieved at the Ga content in the x = 1.0–1.2 range. The LY of the Lu3Ga1.2Al3.8O12:Pr SCF is comparable with the LY of the best reference LuAG:Pr single crystal counterpart and significantly (up to 3 times) overcomes the LY of LuAG:Pr and Lu3Al4–3.5Ga1.0–1.5O12 SCFs, grown onto the YAG substrates from the conventional PbO–B2O3 flux.
- Subjects :
- 010302 applied physics
Scintillation
Materials science
business.industry
Doping
Analytical chemistry
chemistry.chemical_element
02 engineering and technology
General Chemistry
Scintillator
021001 nanoscience & nanotechnology
Condensed Matter Physics
Epitaxy
01 natural sciences
Optics
chemistry
0103 physical sciences
General Materials Science
Gallium
0210 nano-technology
business
Luminescence
Single crystal
Solid solution
Subjects
Details
- ISSN :
- 14668033
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- CrystEngComm
- Accession number :
- edsair.doi...........8e1574e037a85f42383d9b2af850c000
- Full Text :
- https://doi.org/10.1039/c7ce01376k