Abstract
The luminescence of Sm2+ in alkaline earth borates (BaB8O13, SrB4O7 and SrB6O10) is reported. The temperature effects on luminescence and decay time of Sm2+ are studied. Due to the thermal population, 5D1 → 7FJ transitions of Sm2+ in BaB8O13, SrB4O7 and SrB6O10 are observed at room temperature. The f–d broad emission transitions of Sm2+ in SrB4O7 and SrB6O10 are observed at high temperature whereas no f–d transition is observed in BaB8O13.
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