On the abnormal efficiency of the luminescence of submicron-sized phosphor Y2O3 : Eu3+

Pomelova, T. A.; Баковец, В. В.; Korolkov, Ilya V.; Антонова, О. В.; Dolgovesova, I. P.

doi:10.1134/s1063783414120269

Cited by 22 publications

(17 citation statements)

References 24 publications

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“…Our results agree with the results of Y 2 O 3 :Eu nanoparticles studies conducted by [3,17,18] authors. These re- Fig.…”

Section: Resultssupporting

confidence: 93%

“…Such a deviation most likely indicates on the possibility for creation of yttrium and europium oxide irregular solutions in Y 2 O 3 :Eu thin film during its deposition and annealing. The formation of irregular solutions of Y and Eu oxides during the synthesis of sub-µm phosphorus Y 2 O 3 :Eu by a sol-gel method is also indicated in [17]. The increase in the relative amount of Eu 3+ ions in the C 2 position in larger crystallites is most likely due to a decrease in the local symmetry of the europium ions environment by oxygen ions.…”

Section: Resultsmentioning

confidence: 93%

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Structure and Cathodoluminescence of Y₂O₃:Eu Thin Films obtained at Different Conditions

Bordun

Kukharskyy

et al. 2018

Acta Phys. Pol. A

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The structure of the surface and spectra of the cathodoluminescence of Y2O3:Eu thin films when changing the activator concentration in the range 1.0-7.5% by mole obtained by RF sputtering were investigated. On the base of the shape of the cathodoluminescence spectra at different concentrations of the activator, the possibility of irregular solutions creating of yttrium and europium oxides and the structural features of the small and large crystallites forming the film Y2O3:Eu is shown. The dependence of the cathodoluminescence intensity on the energy of the exited electrons and current density of electron irradiation was established.

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“…Our results agree with the results of Y 2 O 3 :Eu nanoparticles studies conducted by [3,17,18] authors. These re- Fig.…”

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 93%

Structure and Cathodoluminescence of Y₂O₃:Eu Thin Films obtained at Different Conditions

Bordun

Kukharskyy

et al. 2018

Acta Phys. Pol. A

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“…If Y 3+ is replaced by Eu 3+ the cubic structure of the matrix is saved with little change in the lattice parameters [5]. In XRL spectrum of Y 2 O 3 :Eu ceramics only the activator band due to 5 D 0 → 7 F j electronic transitions in Eu 3+ is observed.…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

“…The spectra of F -type centers are easily discolored by an optical light from 1 mm region and thermally. During last years the obtainment and investigation of micron dispersion of Y 2 O 3 with an europium impurity and the * corresponding author; e-mail: iryna.novosad@lnu.edu.ua effect of co-activators on Eu 3+ luminescence in Y 2 O 3 :Eu were given special attention [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Europium Impurity on the Recombination Luminescence in Y₂O₃

Novosad

Bordun

et al. 2018

Acta Phys. Pol. A

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In this work the researched results of the spectral characteristics of the luminescence and the thermostimulated luminescence curves of Y2O3 and Y2O3:Eu ceramic materials at the X-ray excitation in the 85-295 K range were generalized. Considering the features of Y2O3 crystal structure and the possibility of the formation of the shortlived and stable hole and electron centers of V -and F -type by the ionizing radiation X-ray luminescence spectrum of ceramics at 85 K is fitted into the elementary Gaussian shape bands with the maxima near 3.40, 3.06, 2.67, 2.33, 2.09, and 1.91 eV. The main 3.40 and 3.06 eV bands of the luminescence are caused by the self-trapped excitons of (YO6) 9− complex, when the cation is localized in the field of the trigonal (C3i) and monoclinic (C2) symmetries. The emission at 2.67 eV and the weak bands in the 1.65-2.61 eV region are considered as the radiation of excitons localized on the anion vacancies and the electron centers of F -type (F + , F and F − ). The thermoluminescence of Y2O3 in the 186 and 204 K main peaks range is connected with the thermal destruction of the self-trapped states of O − ions that located in the field of the trigonal and monoclinic symmetries. The activator bands caused by 5 D0 → 7 Fj electronic transitions in Eu 3+ are only observed in the X-ray and thermostimulated luminescence spectra of Y2O3:Eu ceramics. It was assumed that both at the X-rays irradiation and an optical excitation in the band of the charge transfer of Y2O3:Eu sample the energy goes to Eu 3+ through (Eu 2+ O − ) complexes (states) of the charge transfer.

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“…22,36,37 Biochemists have used many Eu 3+ doped nanoparticles in the last decade for in vitro and in vivo cell imaging; still, bulk compounds with larger particle sizes are desirable owing to their stronger emission intensity. 38 In addition, the Eu 3+ substituted compounds are excited at B363 and 395 nm due to intense CT and the 7 F 0 -5 L 6 transition, which fall in the UV range and are harmful to animal cells. But it has been noticed that some Eu 3+ doped compounds exhibit an intense excitation peak at B465 nm ( 7 F 0 -5 D 2 transition), which is cell compatible compared to the earlier one.…”

Section: Introductionmentioning

confidence: 99%

Visible-light excited polar Dion–Jacobson Rb(Bi_1−xEu_x)₂Ti₂NbO₁₀perovskites: photoluminescence properties andin vitrobioimaging

et al. 2022

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On the abnormal efficiency of the luminescence of submicron-sized phosphor Y2O3 : Eu3+

Cited by 22 publications

References 24 publications

Structure and Cathodoluminescence of Y₂O₃:Eu Thin Films obtained at Different Conditions

Structure and Cathodoluminescence of Y₂O₃:Eu Thin Films obtained at Different Conditions

The Influence of Europium Impurity on the Recombination Luminescence in Y₂O₃

Visible-light excited polar Dion–Jacobson Rb(Bi_1−xEu_x)₂Ti₂NbO₁₀perovskites: photoluminescence properties andin vitrobioimaging

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On the abnormal efficiency of the luminescence of submicron-sized phosphor Y2O3 : Eu3+

Cited by 22 publications

References 24 publications

Structure and Cathodoluminescence of Y2O3:Eu Thin Films obtained at Different Conditions

Structure and Cathodoluminescence of Y2O3:Eu Thin Films obtained at Different Conditions

The Influence of Europium Impurity on the Recombination Luminescence in Y2O3

Visible-light excited polar Dion–Jacobson Rb(Bi1−xEux)2Ti2NbO10perovskites: photoluminescence properties andin vitrobioimaging

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Structure and Cathodoluminescence of Y₂O₃:Eu Thin Films obtained at Different Conditions

Structure and Cathodoluminescence of Y₂O₃:Eu Thin Films obtained at Different Conditions

The Influence of Europium Impurity on the Recombination Luminescence in Y₂O₃

Visible-light excited polar Dion–Jacobson Rb(Bi_1−xEu_x)₂Ti₂NbO₁₀perovskites: photoluminescence properties andin vitrobioimaging