Anomalous enhancement of radioluminescence in Lu2-xYxSiO5:Ce3+ and ZnxMg1-xWO4 mixed oxide nanocrystals
Source abstract
Abstract
Abstract We have observed an enhancement of radioluminescence intensity in mixed oxide nanocrystals with activator (Lu2-xYxSiO5:Ce3+ nanocrystals) and intrinsic luminescence (ZnxMg1-xWO4 nanocrystals) which value is higher as compared to the one observed for bulk scintillation crystals. This effect was explained as a result of both reduction of thermalization length of geminate electron-hole pairs and decrease of the content of electron traps formed by oxygen vacancies at cation mixing. More sufficient change of the content of oxygen vacancies at cation mixing for nanocrystals than for bulk crystals leads to stronger increase of radioluminescence intensity.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Radiation Detection and Scintillator Technologies · Nuclear materials and radiation effects · Luminescence Properties of Advanced Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. Lecoq · 2016
2. Nonproportionality of scintillator detectors: theory and experiment. II10.1109/TNS.2011.2167687 ↗
3. Composition engineering in cerium-doped (Lu, Gd)3(Ga, Al)5O12 single-crystal scintillators10.1021/cg200694a ↗
4. Crystal growth and characterization of alkali-earth halide scintillators10.1016/j.jcrysgro.2012.01.014 ↗
5. Scintillation efficiency improvement by mixed crystal use10.1109/TNS.2013.2277883 ↗
6. Light‐yield improvement trends in mixed scintillation crystals10.1002/pssa.201431137 ↗
7. Different roles of Ce3+ optical centers in oxyorthosilicate nanocrystals at X-ray and UV excitation10.3390/cryst9020114 ↗
8. Luminescence properties of Ce-doped oxyorthosilicate nanophosphors and single crystals10.1016/j.jlumin.2010.07.010 ↗
9. Abnormal enhancement of light output by cation mixing in ZnxMg1-xWO4 nanocrystals10.15407/fm24.01.016 ↗
10. X-ray and photo-excited luminescence of ZnWO₄ nanoparticles with different size and morphology10.15407/fm23.04.357 ↗
11. Energy transfer in ZnWO4 and CdWO4 scintillators10.1016/S0168-9002(02)00740-4 ↗
12. Excited-state absorption in ZnWO4 crystal10.1016/0022-2313(94)90019-1 ↗
13. Feasibility study of a ZnWO4 scintillator for exploiting materials signature in cryogenic WIMP dark matter searches10.1016/j.physletb.2005.01.095 ↗
14. Luminescence of ZnWO4 and CdWO4 crystals10.1002/pssa.2211030133 ↗
15. Luminescence of CaWO4, CaMoO4, and ZnWO4 scintillating crystals under different excitations10.1063/1.1872198 ↗
16. Analysis of the excitation and emission spectra of tungstates and molybdate10.1246/bcsj.69.2191 ↗
17. MgWO4–A new crystal scintillator10.1016/j.nima.2009.06.040 ↗
18. Energy transfer in solid solutions ZnxMg1-xWO410.1016/j.optmat.2013.12.039 ↗
19. Shaped crystal growth of Ce3+-doped Lu2(1−x)Y2xSiO5 oxyorthosilicate for scintillator applications by pulling-down technique10.1016/j.jcrysgro.2005.10.147 ↗
20. Structure–property correlations in a Ce-doped (Lu, Gd)2SiO5: Ce scintillator10.1021/cg300608t ↗
21. Lifshitz tails for periodic plus random potentials10.1007/BF01010445 ↗
22. The energy spectrum of disordered systems10.1080/00018736400101061 ↗
23. Paramagnetic defects in ZnWO4 single crystals induced by electron irradiation at room temperature10.1016/0022-3697(94)90012-4 ↗
24. Crystal composition and afterglow in mixed silicates: the role of melting temperature10.1103/PhysRevApplied.4.024009 ↗
25. Size‐dependent lattice expansion in nanoparticles: reality or anomaly?10.1002/cphc.201200257 ↗
26. Understanding chemical expansion in non‐stoichiometric oxides: ceria and zirconia case studies10.1002/adfm.201102648 ↗