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Keywords
- ce3+ (2)
- MMCT (1)
- Photoluminescence (1)
- Pr3+ luminescence (1)
- Single crystal (1)
- TAG (1)
- Temperature-dependent spectroscopy (1)
- Up-conversion (1)
- core/shell (1)
- energy transfer (1)
- eu3+ (1)
- ga3+ (1)
- garnet (1)
- tb3+ (1)
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This work deals with the spectroscopic properties of praseodymium doped single crystalline lutetium aluminum garnet (LuAG:Pr3+). A special focus was set on temperature- and time-dependent spectroscopy. Beyond the well-known down-conversion luminescence of LuAG:Pr3+, also UV-A/B up-conversion luminescence under excitation with a 488 nm laser was thoroughly investigated. Furthermore, the results of the spectroscopic investigations on the single crystalline material were supplemented and compared with measurements on a microscale powder sample.
In addition, to the spectroscopic investigations, mechanistic considerations are presented to obtain a closer look at the up-conversion process in LuAG:Pr3+. We promote the thesis of a temperature-dependent energy transfer up-conversion mechanism.