Spectroscopy and energy level location of the trivalent lanthanides in LiYP4O12 |
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Authors: | P. Dorenbos T. Shalapska A. Gektin |
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Affiliation: | a Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, Netherlands b Ivan Franko National University of Lviv, Physics Department, 8 Kyryla i Mefodiya Str., 79005 Lviv, Ukraine c Institute for Scintillation Materials, NAS of Ukraine, 60 Lenin ave., 61001 Kharkiv, Ukraine |
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Abstract: | The excitation and emission properties of the lanthanides Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Tb3+, Er3+, Tm3+, and Yb3+ in LiYP4O12 were studied by vacuum ultra-violet spectroscopy at 10 K. It provides information on the energies of 4f-5d excitation and emission bands. In the case of Er3+ spin forbidden emission was observed. Charge transfer excitation bands were identified for Eu3+, Sm3+, Tm3+, and Yb3+, and in the case of Yb3+ charge transfer luminescence is observed. All data appear to be consistent with each other and have been used to construct a level scheme showing the location of the energy levels of all trivalent and divalent lanthanides in LiYP4O12. |
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Keywords: | Lanthanides Charge transfer 4f-5d transitions Level locations |
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