Journal
CRYSTENGCOMM
Volume 21, Issue 21, Pages 3313-3321Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ce00193j
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Funding
- Ministry of Education, Youth and Sports of the Czech Republic [NCN 2016/21/B/ST8/03200]
- Czech Science Foundation [LO1409, 02.1.01/0.0/0.0/16_013/0001406]
- [17-09933S]
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This work reports the results of the optical and electron paramagnetic resonance (EPR) investigation of the Ce3+ incorporation in single crystalline film (SCF) scintillators of Ce-doped LuAlO3 perovskite, grown by the liquid phase epitaxy method onto YAlO3 substrates using a PbO-B2O3 flux. The absorption, luminescence and EPR spectra showed the presence of the main Ce3+ center type (CeLu) corresponding to the location of Ce3+ ions in the twelve-fold coordinated cuboctahedral positions of the LuAlO3 host. Also the dimer Ce-Lu-Ce-Lu centers were found in the EPR spectra of the LuAP: Ce SCFs. No EPR spectrum of the Ce3+ ions located in the octahedral positions of Al3+ cations has been detected indicating their negligibly small concentration (below 5 x 10(-3) at%) in the SCFs. Pb3+ and Pt3+ impurity ions incorporated into the SCFs grown from the PbO-B2O3 flux and Pt crucible were also identified by resolving, in particular, the hyperfine structure from the Pt-195 isotope in the EPR spectra.
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