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Luminescent and Scintillation Properties of CeAlO3 Crystals and Phase-Separated CeAlO3/CeAl11O18 Metamaterials

1
Institute for Scintillation Materials, National Academy of Sciences of Ukraine, 61072 Kharkiv, Ukraine
2
Institute of Physics, Kazimierz Wielki University in Bydgoszcz, 85090 Bydgoszcz, Poland
3
Institute for Single Crystals, National Academy of Sciences of Ukraine, Kharkiv 61072, Ukraine
4
SSI Institute for Single Crystals, National Academy of Sciences of Ukraine, 61072 Kharkiv, Ukraine
5
Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Krakow, Poland
*
Author to whom correspondence should be addressed.
Crystals 2019, 9(6), 296; https://doi.org/10.3390/cryst9060296
Received: 29 April 2019 / Revised: 29 May 2019 / Accepted: 4 June 2019 / Published: 6 June 2019
(This article belongs to the Special Issue Crystals, Films and Nanocomposite Scintillators)
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Abstract

This work is dedicated to the growth process and investigation of luminescent and scintillation properties of CeAlO3 single crystals and CeAlO3/CeAl11O18 metamaterials under e-beam and α-particles excitation. It has been shown that cathodoluminescence and radioluminescence spectra of CeAlO3 crystals contain two bands, peaking at 440 and 500 nm, and caused by the Ce3+ 5d–4f transitions into CeAl11O18 phase, which is present in these crystals as an admixture. Under 270 nm ultraviolet (UV) light excitation, a CeAlO3 crystal possesses complicated non-exponential luminescence decay, with the average decay time of 16 ns. The light yield of CeAlO3 crystals under α-particle excitation is about 16% and 12%, in respect to the standard Bi4Ge3O12 (BGO) crystal and Y3Al5O12:Ce (YAG:Ce) single crystalline film samples, respectively. The CeAlO3 scintillation decay is quite fast, with the decay time value t1/e in the 54–56 ns range. View Full-Text
Keywords: CeAlO3 crystals; CeAlO3/CeAl11O18 metamaterials; luminescence; scintillators CeAlO3 crystals; CeAlO3/CeAl11O18 metamaterials; luminescence; scintillators
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Sidletskiy, O.; Arhipov, P.; Tkachenko, S.; Gerasymov, I.; Trushkovsky, G.; Zorenko, T.; Zorenko, Y.; Mateychenko, P.; Puzan, A.; Gieszczyk, W.; Bilski, P. Luminescent and Scintillation Properties of CeAlO3 Crystals and Phase-Separated CeAlO3/CeAl11O18 Metamaterials. Crystals 2019, 9, 296.

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