1. Effect of Ca^2+Co-Doping on the Temperature Dependence of Gd2SiO5:Ce Photoluminescence.
- Author
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Tyagi, Mohit, Koschan, Merry, Rothfuss, Harold E., Hayward, Jason, and Melcher, Charles L.
- Subjects
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PHOTOLUMINESCENCE , *CRYSTALS , *RADIATIONLESS transitions , *ENERGY levels (Quantum mechanics) , *SCINTILLATORS - Abstract
The temperature dependence of the photoluminescence properties of Gd2SiO5:Ce,Ca crystals was found to be significantly affected by Ca codoping and shows that presence of additional energy levels in these crystals provides nonradiative energy transfer. The excitation and emission bands also broaden with codoping due to presence of these additional energy levels. Therefore Ca codoping in Gd2SiO5 crystals decreases the scintillation decay very strongly and has a strong adverse affect on scintillation light yield, different from the effect in other members of the oxyorthosilicate family such as Lu2SiO5 and Y2SiO5. [ABSTRACT FROM PUBLISHER]
- Published
- 2013
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