Abstract
In this study, the evolution behaviour of Yb2+ luminescence in YAG single crystal was investigated with ion beam induced luminescence. Comparing with the luminescence of YAl antisite defect and Fe3+ in the spectrum, the luminescence of Yb2+ decays the slowest, exhibiting better radiation resistance and thermal stability. The degradation of Yb2+ luminescence emerges at a lower temperature under H+ irradiation, equivalent to 421 K. The activation energy of the degradation process of Yb2+ luminescence, using Arrhenius equation, is about 0.202 eV. The peak positions of Yb2+ luminescence fluctuate slightly within the 293–473 K range, without exhibiting significant redshift or blueshift. The aforementioned findings offer fundamental experimental support for the utilization of Yb2+ luminescence in harsh environments.
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