Single Crystalline Film Scintillators Based on the Orthosilicate, Perovskite and Garnet Compounds

Zorenko, Yu.; Gorbenko, V.; Savchyn, V.; Voznyak, T.; Sidletskiy, O.; Grinyov, B.; Nikl, M.; Mareš, J.; Martin, Thierry; Douissard, Paul-Antoine

doi:10.1109/tns.2012.2188907

Cited by 20 publications

(4 citation statements)

References 32 publications

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“…There are several synthesis methods to prepare thin films, all of them having their own accessible range of thickness and substrate requirement: sol-gel coating, liquidphase epitaxy, and chemical-vapor deposition. Several garnet-, perovskite-, and silicate-based thin films have been successfully grown using liquid-phase epitaxy for this purpose [171]. Strategies to improve X-ray absorption while keeping the spatial resolution have been developed.…”

Section: Thin Filmsmentioning

confidence: 99%

Needs, Trends, and Advances in Inorganic Scintillators

Dujardin

Auffray

Bourret-Courchesne

et al. 2018

IEEE Trans. Nucl. Sci.

381

240

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This paper presents new developments in inorganic scintillators widely used for radiation detection. It addresses major emerging research topics outlining current needs for applications and material sciences issues with the overall aim to provide an up-to-date picture of the field. While the traditional forms of scintillators have been crystals and ceramics, new research on films, nanoparticles, and microstructured materials is discussed as these material forms can bring new functionality and therefore find applications in radiation detection. The last part of the contribution reports on the very recent evolutions of the most advanced theories, methods, and analyses to describe the scintillation mechanisms.

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Section: Thin Filmsmentioning

confidence: 99%

Needs, Trends, and Advances in Inorganic Scintillators

Dujardin

Auffray

Bourret-Courchesne

et al. 2018

IEEE Trans. Nucl. Sci.

381

240

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“…On the other hand, epitaxial films can be contaminated by the ions coming from the used flux. Films grown from PbO-based flux contain Pb 2+ ions, which act as quenching centers at room temperatures, thus lowering the light yield. , Optimization of growth conditions can diminish the negative effects of Pb 2+ contamination, but their complete removal is impossible and their light yield under alpha excitation was at best comparable to bulk single crystals of YAG:Ce or LuAG:Ce, ,− i.e., approximately two times lower than light yield of recently discovered multicomponent garnet scintillators. However, the more recently used BaO-based flux does not contaminate the film and has a much lower negative effect on scintillation properties. , Unfortunately, high viscosity of this flux leads to production of pits and other macroscopic defects in the film .…”

Section: Introductionmentioning

confidence: 99%

Composition Tailoring in Ce-Doped Multicomponent Garnet Epitaxial Film Scintillators

Průša

Kučera

Mareš

et al. 2015

Crystal Growth & Design

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Bulk single crystals of multicomponent garnet scintillators Lu3–x Gd x Ga y Al5–y O12:Ce exhibit much improved scintillation properties in optimized composition islands (x = 2–3, y = 2–3) compared to the simple Lu3Al5O12:Ce one. Namely, a much higher light yield, less intense slow component in the scintillation response, and better energy resolution have been achieved. This work shows that comparable enhancement of the scintillation performance can be reached also in the case of epitaxial garnet films of similar composition though the nature of trapping states acting in the transfer stage of the scintillation mechanism may be different. This is the first time that excellent scintillation properties were reproduced in epitaxial films. Lu3–x Gd x Ga y Al5–y O12:Ce samples were grown by liquid phase epitaxy from BaO-B2O3–BaF2 flux and quantitatively compared with top performance bulk crystals as concerns light yield, energy resolution, scintillation decay, and afterglow characteristics. Reported characteristics point to the potential of such thin film scintillators in high resolution two-dimensional imaging and particle beam diagnostics.

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“…For the realization of these approaches, we considered the production of the epitaxial structures of the perovskite materials based on the rare-earth and transition metal-doped SCF and SC of RAlO 3 (R = Gd, Y) perovskite compounds [ 16 , 17 ]. In the frame of these approaches, the epitaxial structures based on the SCF of Mn-doped YAlO 3 perovskite and Ce or Pr-doped YAP SC substrates as well as the epitaxial structures based on the Ce-doped GdAlO 3 SCF and Ce or Pr-doped YAP SC substrates, respectively, were created using the LPE growth method from the melt solution based on the PbO-B 2 O 3 fluxes.…”

Section: Introductionmentioning

confidence: 99%

Development of the Composite Thermoluminescent Detectors Based on the Single Crystalline Films and Crystals of Perovskite Compounds

et al. 2022

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This work is dedicated to the development of new types of composite thermoluminescent detectors based on the single crystalline films of Ce-doped GdAlO3 perovskite and Mn-doped YAlO3 and (Lu0.8Y0.2)AlO3:Mn perovskites as well as Ce and Pr-doped YAlO3 single crystal substrates. These detectors were obtained using the Liquid Phase Epitaxy growth method from the melt solution based on the PbO-B2O3 fluxes. Such composite detectors can by applied for the simultaneous registration of different components of mixed ionization fluxes using the differences between the thermoluminescent glow curves, recorded from the film and crystal parts of epitaxial structures. For creation of the new composite detectors, we considered using, for the film and crystal components of epitaxial structures (i) the different perovskite matrixes doped with the same type of activator or (ii) the same perovskite host with various types of activators. The thermoluminescent properties of the different types of epitaxial structures based on the abovementioned films and crystal substrates were examined in the conditions of β-particles and X-ray excitation with aim of determination of the optimal combination of perovskites for composite detectors. It was shown that, among the structures with all the studied compositions, the best properties for the simultaneous thermoluminescent detection of α- and X-rays were the GdAlO3:Ce film/YAlO3:Ce crystal epitaxial structure.

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Single Crystalline Film Scintillators Based on the Orthosilicate, Perovskite and Garnet Compounds

Cited by 20 publications

References 32 publications

Needs, Trends, and Advances in Inorganic Scintillators

Needs, Trends, and Advances in Inorganic Scintillators

Composition Tailoring in Ce-Doped Multicomponent Garnet Epitaxial Film Scintillators

Development of the Composite Thermoluminescent Detectors Based on the Single Crystalline Films and Crystals of Perovskite Compounds

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