Peculiar temperature-dependent fluorescence of EuCl3 in LiCl molten salt as a result of phase changes

Im, Hee‐Jung; Song, Kyuseok

doi:10.1016/j.jnoncrysol.2011.06.003

Cited by 4 publications

(1 citation statement)

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“…The intensity of Eu(III) fluorescence observed near 600 nm also showed a similar behavior in this temperature range. Im and Song published a detailed report about the peculiar behavior in the fluorescence of EuCl 3 in LiCl molten salt with excitation by a nitrogen laser (41). They observed that there is spectroscopic shift and intensity change of fluorescence when the temperature is varied from 175 to 683 C. In the temperature range of 175 to 325 C, the fluorescence intensity maximum is observed at near 410 nm, whereas the absorption maxim is shifted to »440 nm when the temperature of the sample varies from 372 up to 683 C. This peculiar behavior was understood as the phase change in the molten salt environment and partially due to the self-reduction of Eu from Eu 3C to Eu 2C .…”

Section: Fluorescence Spectroscopy Of Lanthanides At High-temperaturementioning

confidence: 99%

Spectroscopic Studies of Lanthanides Ion in High-Temperature Molten Salt

Song

Yeon

2015

Applied Spectroscopy Reviews

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Spectroscopic studies for lanthanide elements in molten salt media performed using absorption, fluorescence, infrared, Raman, electron spin resonance spectroscopy (EPR), and M€ ossbaur spectroscopy were reviewed in an effort to understand the effect of structural change and chemical behavior of lanthanides on the temperature increase and the matrix change. The absorption spectroscopic studies revealed electronic energy levels of the transitions with the general structural information of the lanthanide elements, whereas the laser-induced fluorescence studies revealed more detailed information on lanthanide elements such as the lifetime behavior, structural changes, and hypersensitive transition. Infrared and Raman spectroscopy also provided structural details of molecule containing lanthanides, and the EPR and M€ ossbaur spectroscopy provided supporting information for the spontaneous reduction of trivalent lanthanides, such as Eu(III). The recent development of X-ray spectroscopy such as extended X-ray absorption fine structure (EXAFS) also provided detailed information for lanthanide halide in a molten salt medium. The characteristics of f-d as well as f-f transitions of the lanthanide elements were reviewed and the structural changes depending on the media, lanthanides element, and temperature were discussed in detail.

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Section: Fluorescence Spectroscopy Of Lanthanides At High-temperaturementioning

confidence: 99%