Comparative study of the luminescence of Al2O3:C and Al2O3 crystals under synchrotron radiation excitation

Zorenko, Yu.; Fabisiak, K.; Zorenko, T.; Mandowski, A.; Xia, Qi; Batentschuk, Miroslaw; Friеdrich, J.; Zhusupkalieva, G.

doi:10.1016/j.jlumin.2013.06.043

Cited by 18 publications

(4 citation statements)

References 15 publications

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“…That is, the faster decay component of the luminescence with a decay time of 4.8 ns could correspond to the F + centers' luminescence when other fast decay components may be assigned to the F + -like aggregate centers. The data of the decay kinetics of F + centers in other oxide compounds, e.g., Al 2 O 3 , YAlO 3 , or Y 3 Al 5 O 12 [26][27][28], may constitute a reliable confirmation of the conclusions drawn for the LMP compound from this study's investigations.…”

Section: Pl Spectra and Decay Kinetics Analysis For The Undoped Lmp Csupporting

confidence: 71%

Intrinsic and Dopant-Related Luminescence of Undoped and Tb Plus Tm Double-Doped Lithium Magnesium Phosphate (LiMgPO4, LMP) Crystals

et al. 2020

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In this work, the luminescence properties of undoped, Tm3+ doped, and Tb3+ plus Tm3+ double-doped crystals of the lithium magnesium phosphate (LiMgPO4, LMP) compound were investigated. The crystals under study were grown from melt using the micro-pulling-down method. The intrinsic and dopant-related luminescence of these crystals were studied using cathodo-, radio-, photo-, and thermoluminescence methods. Double doping with Tb3+ and Tm3+ ions was analyzed as these dopants are expected to exhibit an opposite trapping nature, namely to create the hole and electron-trapping sites, respectively. The spectra measured for the undoped samples revealed three prominent broad emission bands with maxima at around 3.50, 2.48, and 1.95 eV, which were associated with intrinsic structural defects within the studied compound. These were expected due to the anion vacancies forming F+-like centers while trapping the electrons. The spectra measured for Tb and Tm double-doped crystals showed characteristic peaks corresponding to the 4f–4f transitions of these dopants. A simplified model of a recombination mechanism was proposed to explain the temperature dependence of the measured thermally stimulated luminescence spectra. It seems that at low temperatures (below 300 °C), the charge carriers were released from 5D3-related Tb3+ trapping sites and recombination took place at Tm-related sites, giving rise to the characteristic emission of Tm3+ ions. At higher temperatures, above 300 °C, the electrons occupying the Tm3+-related trapping sites started to be released, and recombination took place at 5D4-related Tb3+ recombination centers, giving rise to the characteristic emission of Tb3+ ions. The model explains the temperature dependence observed for the luminescence emission from double-doped LiMgPO4 crystals and may be fully applicable for the consideration of emissions of other double-doped compounds.

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Section: Pl Spectra and Decay Kinetics Analysis For The Undoped Lmp Csupporting

confidence: 71%

Intrinsic and Dopant-Related Luminescence of Undoped and Tb Plus Tm Double-Doped Lithium Magnesium Phosphate (LiMgPO4, LMP) Crystals

et al. 2020

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“…Another low intensity luminescence band peaking at 590 nm on the low-energy wind of Ce 3+ emission band and well resolved band peaked at 754 nm can be related to the different dimmer or more complicated centers, based on the couples of F + and F centers in CSSG host (Fig. 4) [28].…”

Section: Low-temperature Luminescence Under Synchrotron Radiationmentioning

confidence: 96%

“…The notable increase of the intensity of Ce 3+ luminescence and other emission centers as well in 12-20.6 eV range (Fig. 5b) is caused by the multiplication of the electronic excitations in this energy range [27][28][29][30][31].…”

Section: Low-temperature Luminescence Under Synchrotron Radiationmentioning

confidence: 99%

Luminescence and Photoconversion Properties of Ce-Doped Ca3sc2si3o12 Crystal

Shakhno,

Gieszczyk,

Bilski

et al. 2023

Preprint

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“…At a temperature of 300 K, intense luminescence bands were recorded with maxima at wavelengths of 414 nm (F centers) and 330 nm (F + centers) when crystals were excited by synchrotron radiation with an energy in the range 4.82-8.66 eV. The decay time of the luminescence of the F + centers is 2.0-2.3 ns [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of aluminum oxide nanoparticles in overstressed nanosecond discharge plasma with the ectonic sputtering mechanism of aluminum electrodes

Шуаибов

Minya

Малинина

et al. 2020

Highlights in BioScience

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The results of studying the conditions of synthesis and luminescence of aluminum oxide nanoparticles in a plasma of an overstressed nanosecond discharge ignited between aluminum electrodes at an interelectrode distance of 2 mm and air pressure in the range of 50-202 kPa are presented. It was shown that the plasma of the investigated discharge is characterized by a wide luminescence band in the spectral range of 300–430 nm, which is associated with the formation of F and F + centers. The research results can be used in micro-nanotechnology, biomedical engineering to obtain nanostructured alumina substrates, on which other nanodevices and films from biomaterials can be placed. The aim of the work was to establish the possibility of detecting small nanoparticles - aluminum oxide nuclei by emission spectroscopy methods and the synthesis of nanostructured alumina films under atmospheric conditions (without the use of vacuum technology) over a large area.

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Comparative study of the luminescence of Al2O3:C and Al2O3 crystals under synchrotron radiation excitation

Cited by 18 publications

References 15 publications

Intrinsic and Dopant-Related Luminescence of Undoped and Tb Plus Tm Double-Doped Lithium Magnesium Phosphate (LiMgPO4, LMP) Crystals

Intrinsic and Dopant-Related Luminescence of Undoped and Tb Plus Tm Double-Doped Lithium Magnesium Phosphate (LiMgPO4, LMP) Crystals

Luminescence and Photoconversion Properties of Ce-Doped Ca3sc2si3o12 Crystal

Synthesis of aluminum oxide nanoparticles in overstressed nanosecond discharge plasma with the ectonic sputtering mechanism of aluminum electrodes

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