Influence of high hydrostatic pressure on Eu2+-luminescence in KMgF3:Eu2+ crystal

Winskiewski, K.; Mahlik, Sebastian; Grinberg, M.; Seo, Hyo Jin

doi:10.1016/j.jlumin.2010.10.020

Cited by 13 publications

(4 citation statements)

References 16 publications

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“…From the plot we can observe, that intensities of all lines increases (Figure 5) crystal compression causes an increase in crystal stiffness and phonon energies. Therefore the pressure shifts of phonon repetition lines are smaller than the respective shift of zerophonon line [24].…”

Section: Resultsmentioning

confidence: 88%

Luminescence Properties of LaAlO3:Pr under Hydrostatic Pressure

Zhanturina,

Beketova,

Gorecka

et al. 2023

Crystals

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The article presents the results of measuring the luminescence spectra, luminescence excitation spectra and luminescence spectra under high pressures for LaAlO3:Pr with concentration of 1%. The materials were synthesized by solid phase synthesis. Diffraction pattern is fully relates to LaAlO3 phase. The photoluminescence spectra show the main energy transitions. The change in the position of the main bands under the hydrostatic pressure of 23, 55, 160 and 191 kBar was demonstrated. The main band at 491 nm is slightly red-shifted, while the line at 605 nm is shifted to the high-energy part of the spectrum. The intensity of all bands increases with increasing hydrostatic pressure. The dynamics of changes in the intensities of maxima and emissions from different transitions are analyzed. Studies of luminescence under high hydrostatic compression are important in observing changes in the internal structure and electronic states of materials under the influence of high pressure, studying internal processes such as recombination of electrons and holes, transitions between energy levels and the release of photons. Understanding the changes that occur under compression can help researchers develop new materials with unique properties.

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Section: Resultsmentioning

confidence: 88%

Luminescence Properties of LaAlO3:Pr under Hydrostatic Pressure

Zhanturina,

Beketova,

Gorecka

et al. 2023

Crystals

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“…As described in Fig. 10 (b), the ground state 4f 7 electronic configuration of free Eu 2+ ion gives a 8 S 7/2 level and the next 4f 7 manifold ( 6 P J ) lies roughly around 28,000 cm -1 above the ground state [58][59][60]. It can be noticed that the Eu 2+ 4f 7 levels are lower than the lowest-lying 4f 6 -5d levels for a free Eu 2+ ion that starts near ~34000 cm -1 .…”

Section: Eu 2+ Doped Kpb 2 CLmentioning

confidence: 84%

Optical properties of Pr³⁺-, Ce³⁺-, and Eu³⁺-doped ternary lead halides

et al. 2015

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The luminescent properties of rare-earth doped solids have been under intense exploration for a wide range of applications ranging from displays and lasers to scintillators. In this work, the material purification, crystal growth, and spectroscopic properties of Ce 3+ -, and Eu 3+ -doped KPb 2 Cl 5 as well as Pr 3+ doped KPb 2 Cl 5 and KPb 2 Br 5 were investigated for possible applications in infrared lasers and radiation detectors. The studied materials were synthesized through careful purification of starting materials including multi-pass zone-refinement and halogination. The growth of the purified materials was then carried out through vertical or horizontal Bridgman technique. The trivalent praseodymium ion (Pr 3+ ) offers a large number of laser transitions in the visible and infrared (IR) spectral regions. Using ~1.45 μm and 1.9 μm pumping, IR emissions at ~1.6, ~2.4, and ~4.6 μm were observed from Pr: KPb 2 Cl 5 and Pr: KPb 2 Br 5 corresponding to the 4f-4f transitions of H 4 , respectively. Large emission cross-sections in the range of (4.8-6.1) x 10 -20 cm 2 (near-IR, ~1.6 μm) and (5.5-6.0) x 10 -20 cm 2 (mid-IR, ~4.6 μm) were observed for both crystals. Emission characteristics of the ~1.6 μm Pr 3+ transition including IR to visible upconversion emission studies were also discussed. Under Xenon lamp excitation, preliminary spectroscopic results showed allowed 5d-4f Ce 3+ emission centered at ~375 nm in Ce 3+ doped KPb 2 Cl 5 . In addition, commercial Ce:YAG and Ce:YAP crystals are included in this study for comparison. Pr 3+ and Eu 2+ 5d-4f emissions were not observed from Pr 3+ /Eu 2+ doped KPb 2 Cl 5 crystals.

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“…5a, the excitation spectra indicate a broad excitation band attributed to the 4f 7 → 4f 6 5d transition of Eu 2+ ions. 20 The excitation band could be divided into two parts caused by different energy levels of Eu 2+ ions in the host lattice. The above excitation band is consistent with absorption in the wavelength range from UV to blue light.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Photoluminescence Properties of Green-Emitting Ba₃Si₆O₁₂N₂Oxynitride Phosphor Using Boron-Coated Eu₂O₃for White LED Applications

Song¹,

Kim²,

Jung³

et al. 2012

J. Electrochem. Soc.

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Highly efficient Ba 3 Si 6 O 12 N 2 green-emitting phosphors using boron-coated Eu 2 O 3 were synthesized by a gas reduction nitridation method under flowing NH 3 gas. X-ray diffraction patterns showed that the synthesized phosphor was a pure phase of Ba 3 Si 6 O 12 N 2 . The Ba 3 Si 6 O 12 N 2 green-emitting phosphors synthesized by modification of an alumina boat were crystallized much better as well as showed higher emission intensity. The emission spectra showed a typically broad green emission band attributed to the 4f 6 5d → 4f 7 electronic transition of Eu 2+ ions under excitation at 405 nm. The green-emitting Ba 3 Si 6 O 12 N 2 phosphors that were synthesized using boron-coated Eu 2 O 3 by modification of an alumina boat could be applied to generate white light emitting diodes.

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Influence of high hydrostatic pressure on Eu2+-luminescence in KMgF3:Eu2+ crystal

Cited by 13 publications

References 16 publications

Luminescence Properties of LaAlO3:Pr under Hydrostatic Pressure

Luminescence Properties of LaAlO3:Pr under Hydrostatic Pressure

Optical properties of Pr³⁺-, Ce³⁺-, and Eu³⁺-doped ternary lead halides

Synthesis and Photoluminescence Properties of Green-Emitting Ba₃Si₆O₁₂N₂Oxynitride Phosphor Using Boron-Coated Eu₂O₃for White LED Applications

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Influence of high hydrostatic pressure on Eu2+-luminescence in KMgF3:Eu2+ crystal

Cited by 13 publications

References 16 publications

Luminescence Properties of LaAlO3:Pr under Hydrostatic Pressure

Luminescence Properties of LaAlO3:Pr under Hydrostatic Pressure

Optical properties of Pr3+-, Ce3+-, and Eu3+-doped ternary lead halides

Synthesis and Photoluminescence Properties of Green-Emitting Ba3Si6O12N2Oxynitride Phosphor Using Boron-Coated Eu2O3for White LED Applications

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Product

Resources

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Optical properties of Pr³⁺-, Ce³⁺-, and Eu³⁺-doped ternary lead halides

Synthesis and Photoluminescence Properties of Green-Emitting Ba₃Si₆O₁₂N₂Oxynitride Phosphor Using Boron-Coated Eu₂O₃for White LED Applications