Ab-initio simulations at the atomic scale of an exceptional experimental photoluminescence signal observed in Ce3+-doped Y2O3 sesquioxide system

Taibeche, M.; Guerbous, L.; Boukerika, A.; Kechouane, M.; Nedjar, R.; Zergoug, T.

doi:10.1016/j.ijleo.2016.08.092

Cited by 10 publications

(6 citation statements)

References 24 publications

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“…It should be pointed out that the simulated diffraction peak at 34 • is ascribed to the (400) plane direction. This is accord with the result obtained by Taibeche et al (2016) but different from the measured value proposed by Chien and Yu (2008). For comparison, the XRD patterns of the four isomers (a), (b), (c), and (d) are also provided in Figure 3.…”

Section: Crystal Structuressupporting

confidence: 85%

“…The isomer (d) is assigned to P1 group symmetry and is 0.27 eV energetically higher than ground state structure. Although the X-ray powder diffraction (XRD) patterns of Y 2 O 3 :Ce crystals have been extensively studied, there appears to be inconsistencies of the spectra (Chien and Yu, 2008;Taibeche et al, 2016;Kumar et al, 2017). In order to clarify the crystal characters of the lowest-energy structure, we simulate the XRD patterns of Y 2 O 3 :Ce in the 2θ range of 15-65 • .…”

Section: Crystal Structuresmentioning

confidence: 99%

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The Microstructure and Electronic Properties of Yttrium Oxide Doped With Cerium: A Theoretical Insight

Wang

Huang

et al. 2020

Front. Chem.

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Section: Crystal Structuressupporting

confidence: 85%

Section: Crystal Structuresmentioning

confidence: 99%

The Microstructure and Electronic Properties of Yttrium Oxide Doped With Cerium: A Theoretical Insight

Wang

Huang

et al. 2020

Front. Chem.

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“…The U eff is tuned in such a way to localized 4f state in the band gap of the host estimated at 7.5 eV [32]. This value is closed to the value of the band gap published by Kitaura et al [16].…”

Section: Photoluminescence Studymentioning

confidence: 60%

“…In addition, we can complete the 5d schematicenergy levels of Ce 3+ inside the total density of state TDOS of LSO using the following equation (Figure 9) [8,32]:…”

Section: Photoluminescence Studymentioning

confidence: 99%

Structural, Morphological and Photoluminescence Spectroscopy Studies of Intense Blue Ce\(^{3+}\)-doped Lutetium Oxyorthosilicate Scintillator Nanomaterials

Hamroun

Guerbous

Bachari

et al. 2021

Jour. Atom. Mol. Conden. Matt. Nano Physics

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Monoclinic Lu 2 SiO 5 (LSO): Ce 3+ type oxyorthosilicates nanopowders were prepared by sol-gel route. The goal of present work is the study the influence of annealing temperature treatment, up to 1100 • C, on the structural, morphology and photoluminescence properties of LSO: Ce 3+ nanophosphor. The powder samples were characterized by X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), Room temperature Raman spectroscopy and room temperature photoluminescence spectroscopy. It was found that the annealing temperature treatment has an effect on the phase purity, the morphology as well as photoluminescence characteristics LSO: Ce 3+ nanophosphor. An intense violet-blue asymmetric emission band ranged from 370 nm to 470 nm with a maximum intensity situated at around 420 nm, assigned to the 5d→4f ( 2 F 5/2 , 2 F 7/2 ) interconfigurational transitions of Ce 3+ ion in LSO nanomaterial has been observed. Furthermore, LSO: Ce 3+ present higher emission intensity for sample annealed at 1200 • C. The influences of the presence of LPS, as parasitic phase, on structural, morphological and luminescence properties LSO: Ce 3+ nanomaterial were highlighted. Also, using the experimental data and wave function-based ab-initio calculation results, the Ce 3+ energy levels position relative to the LSO nanomaterial band structure were found.

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“…[7][8][9] For instance, Er 3+ , Yb 3+ , and Tm 3+ -doped Y 2 O 3 are commonly red, green, and blue phosphors, respectively. [10][11][12][13][14][15] However, the RE-doped Y 2 O 3 materials have many unavoidable disadvantages such as high cost and low availability. Several studies have been reported on the photoluminescence (PL) properties of undoped or main-group element-doped Y 2 O 3 powders; micro or nano-scale powders of Y 2 O 3 phosphor have been synthesized by ionic liquid-assisted method, 16) hydrolysis and oxidation method, 17) sol-gel method, 18) coprecipitation method 19) and hydroxylation of yttrium nitrate.…”

mentioning

confidence: 99%

Photoluminescence properties of undoped and Si⁴⁺-doped polycrystalline Y₂O₃ phosphors prepared by flash-sintering

Nambu¹,

Hayasaka²,

Yamamoto³

et al. 2019

Appl. Phys. Express

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Photoluminescence of Y2O3 is commonly activated by the doping of rare-earth elements such as Eu. In the present study, we produced undoped and 1 mol% Si4+-doped, polycrystalline Y2O3 phosphors emitting blue-light by employing flash-sintering process. The luminescence was observed only in the flash-sintered specimens, but was not observed in the conventionally-sintered Y2O3 bodies. In particular, the Si4+-doped Y2O3 body prepared by the flash-sintering process using AC field exhibited remarkable photoluminescence under a UV light. The formation of excess point defects such as oxygen interstitials induced by the flash-sintering and Si4+-doping were likely to be attributed to the blue luminescence.

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Ab-initio simulations at the atomic scale of an exceptional experimental photoluminescence signal observed in Ce3+-doped Y2O3 sesquioxide system

Cited by 10 publications

References 24 publications

The Microstructure and Electronic Properties of Yttrium Oxide Doped With Cerium: A Theoretical Insight

The Microstructure and Electronic Properties of Yttrium Oxide Doped With Cerium: A Theoretical Insight

Structural, Morphological and Photoluminescence Spectroscopy Studies of Intense Blue Ce\(^{3+}\)-doped Lutetium Oxyorthosilicate Scintillator Nanomaterials

Photoluminescence properties of undoped and Si⁴⁺-doped polycrystalline Y₂O₃ phosphors prepared by flash-sintering

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Ab-initio simulations at the atomic scale of an exceptional experimental photoluminescence signal observed in Ce3+-doped Y2O3 sesquioxide system

Cited by 10 publications

References 24 publications

The Microstructure and Electronic Properties of Yttrium Oxide Doped With Cerium: A Theoretical Insight

The Microstructure and Electronic Properties of Yttrium Oxide Doped With Cerium: A Theoretical Insight

Structural, Morphological and Photoluminescence Spectroscopy Studies of Intense Blue Ce\(^{3+}\)-doped Lutetium Oxyorthosilicate Scintillator Nanomaterials

Photoluminescence properties of undoped and Si4+-doped polycrystalline Y2O3 phosphors prepared by flash-sintering

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Photoluminescence properties of undoped and Si⁴⁺-doped polycrystalline Y₂O₃ phosphors prepared by flash-sintering