Oxygen influence on luminescence properties of rare-earth doped NaLaF 4

Tuomela, Anne; Pankratov, V.; Šarakovskis, Anatolijs; Doke, Guna; Grīnberga, Līga; Vielhauer, S.; Huttula, Marko

doi:10.1016/j.jlumin.2016.06.021

Cited by 22 publications

(8 citation statements)

References 27 publications

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“…Eu 3+ −F − charge transfer band is normally located at substantially higher energies around 8 eV. 46 In our case, this region corresponds to the absorption of the diamond matrix and a very limited energy transfer from the matrix to the nanoparticles was observed.…”

Section: ■ Results and Discussionmentioning

confidence: 47%

Diamond–Rare Earth Composites with Embedded NaGdF₄:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens

Седов

Kouznetsov

Martyanov

et al. 2020

ACS Appl. Nano Mater.

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Thin-film diamond−rare earth fluoride nanocomposites have been produced by chemical vapor deposition to be used as a source of intensive photo-and X-ray luminescence. The composites with embedded Eu-containing nanoparticles show highintensity orange narrow-band photoluminescence near the wavelength of 612 nm. Using β-NaGdF 4 :Eu instead of Eu(III) tri-(2,6pyridine dicarboxylic acid) and europium fluoride in the diamond matrix resulted in enhanced signal/noise ratio in the luminescence. The mapping of the spatial distribution of photoluminescence intensity on macro-and micro scale revealed highly uniform emission originated from the composite. The developed composite material with mechanically strong, highly thermally conducting and transparent diamond matrix opens a way to use the diamond− fluoride composites as photo-and X-ray luminescent screens (scintillators) capable to withstand high photon fluxes.

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Section: ■ Results and Discussionmentioning

confidence: 47%

Diamond–Rare Earth Composites with Embedded NaGdF₄:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens

Седов

Kouznetsov

Martyanov

et al. 2020

ACS Appl. Nano Mater.

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“…The sample with 10% samarium concentration revealed a small fraction of additional monoclinic SmB 3 O 6 phase (ICDD#04-010-0838) [9]. Synchrotron radiation has been successfully applied for luminescence studies of many types of wide band gap inorganic materials in UV and VUV spectral ranges [37][38][39][40][41][42][43], including nanocrystalline semiconductor structures [44,45] and two-dimensional systems [46][47][48].…”

Section: Methodsmentioning

confidence: 99%

Luminescence and vacuum ultraviolet excitation spectroscopy of samarium doped SrB4O7

Tuomela

Zhang

Huttula

et al. 2020

Journal of Alloys and Compounds

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“…The sodium yttrium fluoride NaYF 4 [1][2][3][4][5] together with similar fluorides, such as LiYF 4 , LiLuF 4 , NaGdF 4 and etc. [2,6,7], belongs to the family of metal fluorides MREF 4 (M ¼ alkali or alkali earth metal, RE ¼ Ln 3þ rare earth ion), which have been successfully grown as single crystals or synthesized as nano and micro-materials through different methods.…”

Section: Introductionmentioning

confidence: 99%

Structural and electronic properties of β-NaYF4 and β-NaYF4:Ce3+

Platonenko

Попов

2020

Optical Materials

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In this work, the density functional theory approach with linear combination of atomic orbitals (LCAO) as implemented in the CRYSTAL17 computer code is applied to hexagonal β-NaYF 4 , located in three possible space groups of this compound: P6, P6 3 /m and P6 2 m. First, the disordered crystalline structure of NaYF 4 was modelled in a large supercell containing 108 atoms. In order to obtain better agreement with the experimental data, we used several different exchange-correlation functionals. Basic properties, such as lattice constant, band gap and total energies were calculated and compared for all three space groups and three exchange-correlation functionals-HSE06, PWGGA and PWGGAþ13%HF. It was found that for all three functionals, the minimum of total energy corresponds to P6 space group. Secondly, in order to study the effects associated with the Ce 3þ impurity and the F center (radiation defect), the P6 β-NaYF 4 structure with the F center and Ce 3þ or with both was carefully modelled. Taking into account that fluorine atoms have different nearest neighbours, several types of fluorine vacancies were simulated and an appropriate formation energies were determined. Finally, the effects of Ce 3þ ion substitution of Y ions in different positions as well as formation of Ce 3þ , the F center defect pairs were also studied and an appropriate incorporation energies were calculated.

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Oxygen influence on luminescence properties of rare-earth doped NaLaF 4

Cited by 22 publications

References 27 publications

Diamond–Rare Earth Composites with Embedded NaGdF₄:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens

Diamond–Rare Earth Composites with Embedded NaGdF₄:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens

Luminescence and vacuum ultraviolet excitation spectroscopy of samarium doped SrB4O7

Structural and electronic properties of β-NaYF4 and β-NaYF4:Ce3+

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Oxygen influence on luminescence properties of rare-earth doped NaLaF 4

Cited by 22 publications

References 27 publications

Diamond–Rare Earth Composites with Embedded NaGdF4:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens

Diamond–Rare Earth Composites with Embedded NaGdF4:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens

Luminescence and vacuum ultraviolet excitation spectroscopy of samarium doped SrB4O7

Structural and electronic properties of β-NaYF4 and β-NaYF4:Ce3+

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Product

Resources

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Diamond–Rare Earth Composites with Embedded NaGdF₄:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens

Diamond–Rare Earth Composites with Embedded NaGdF₄:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens