Electron paramagnetic resonance studies on the defects formed in the Dy(III)-doped SrAl2O4

Takeyama, T.; Nakamura, Takato; Takahashi, Naoyuki; Ohta, Masatoshi

doi:10.1016/j.solidstatesciences.2004.02.001

Cited by 20 publications

(17 citation statements)

References 6 publications

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“…The small difference found in the wavelength of emission between the other experimental papers and this paper is due the difference in symmetry of host sites in the different aluminates. Several authors [36,37] observed the typical transition of the Dy in other host materials. Figure 6 shows the XEOL spectrum when the sample is excited with X-ray photons at the Ba L III -edge (5225 eV) and Dy L III -edge (7797 eV) and the theoretical transition lines.…”

Section: Discussionmentioning

confidence: 99%

A computational and spectroscopic study of Dy3+ doped BaAl2O4 phosphors

et al. 2018

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Computational and experimental methods are employed to study the optical properties of Dy-doped BaAl 2 O 4 matrix. Atomistic modelling is used to make predictions of Dy doping sites and charge compensation schemes. The symmetry predicts from atomistic modeling was used to calculate crystal field parameters and to obtain the energies of the electronic transitions of the Dy 3+ ion. Dy-doped BaAl 2 O 4 was prepared via a sol-gel proteic technique. The optical properties were studied using X-ray excited optical luminescence (XEOL) measurements. The X-ray absorption near-edge structure (XANES) at the Ba and Eu L III -edges exhibits typical absorption spectra. The area under the XEOL spectra increases as the photon energy increases in the region around the Ba and Dy L III -edges. The XEOL spectra showed typical Dy lines. Experimental and calculated values for the transition energies are compared.

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Section: Discussionmentioning

confidence: 99%

A computational and spectroscopic study of Dy3+ doped BaAl2O4 phosphors

et al. 2018

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“…This result indicates that Dy 3+ ions are not hole traps. Actually, the presence of hole-trapped Dy 3+ ions was not found in the electron paramagnetic resonance (EPR) experiment [5].…”

Section: Discussionmentioning

confidence: 99%

Temperature dependence of long-lasting afterglow in SrAl2O4:Eu,Dy phosphor

Kamiyanagi

Kitaura

Kaneyoshi

2007

Journal of Luminescence

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“…For further study of the defects, one can also turn to electron paramagnetic/spin resonance (EPR/ESR), which provides more information on the structural properties of the defects [24,261]. …”

Section: Tools For An Accurate Description Of a Persistent Luminesmentioning

confidence: 99%

Persistent Luminescence in Non-Eu2+-Doped Compounds: A Review

2013

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During the past few decades, the research on persistent luminescent materials has focused mainly on Eu2+-doped compounds. However, the yearly number of publications on non-Eu2+-based materials has also increased steadily. By now, the number of known persistent phosphors has increased to over 200, of which over 80% are not based on Eu2+, but rather, on intrinsic host defects, transition metals (manganese, chromium, copper, etc.) or trivalent rare earths (cerium, terbium, dysprosium, etc.). In this review, we present an overview of these non-Eu2+-based persistent luminescent materials and their afterglow properties. We also take a closer look at some remaining challenges, such as the excitability with visible light and the possibility of energy transfer between multiple luminescent centers. Finally, we summarize the necessary elements for a complete description of a persistent luminescent material, in order to allow a more objective comparison of these phosphors.

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Electron paramagnetic resonance studies on the defects formed in the Dy(III)-doped SrAl2O4

Cited by 20 publications

References 6 publications

A computational and spectroscopic study of Dy3+ doped BaAl2O4 phosphors

A computational and spectroscopic study of Dy3+ doped BaAl2O4 phosphors

Temperature dependence of long-lasting afterglow in SrAl2O4:Eu,Dy phosphor

Persistent Luminescence in Non-Eu2+-Doped Compounds: A Review

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