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• W2019948905 abstract "The excited state dynamics of Erbium(III) ions in perfluorinated compounds ErxY1−x[(p-CF3-C6F4)2PO2]3 has been studied using high pressure, over a range of temperatures. These fluorinated compounds have a long lifetime for the erbium 4I13/2 → 4I15/2 emission at λ ~ 1540 nm, but the lifetime increases with decreasing x. We have demonstrated the occurrence of energy migration and calculated the corresponding activation energy for the x = 0.3 and x = 1 samples. Using high pressure techniques, we also show that lifetime is reduced when reducing the Er-Er distance due to the enhancement of non-radiative de-excitation processes related to cross-relaxation. We also observe a pressure-induced phase transition at P ~ 2 GPa and a temperature-induced phase transition at T ~ 125 K. The general behaviour of the series is explained in terms of the occurrence of distance-dependent excitation transfer (excitation hopping and cross-relaxation). Findings for the Er series are compared with Yb[(p-CF3-C6F4)2PO2]3, in which only excitation migration takes place." @default.
• W2019948905 created "2016-06-24" @default.
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• W2019948905 date "2010-03-01" @default.
• W2019948905 modified "2023-09-23" @default.
• W2019948905 title "High-pressure study of non-radiative de-excitation mechanisms in perfluorinated organic erbium(III) phosphinates" @default.
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• W2019948905 doi "https://doi.org/10.1088/1742-6596/215/1/012042" @default.
• W2019948905 hasPublicationYear "2010" @default.
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