Article ID Journal Published Year Pages File Type
5398817 Journal of Luminescence 2015 5 Pages PDF
Abstract
The scintillation and luminescence properties of SrI2:1% Sm2+ and SrI2:1% Er3+ are reported. Single crystals were grown by the vertical Bridgman technique. Broad band Sm2+ 5d-4f emission was observed centered at 750 nm with a radiative lifetime of 1.25 µs. The photoluminescence decay time increases with temperature due to self-absorption. With Er3+ a clear charge transfer band was identified at 295 nm. The spectroscopic properties of Sm2+ and Er3+ are compared with those of Eu2+, Yb2+, Ce3+, and Nd3+ doped in SrI2. The results are combined to construct a diagram with the vacuum referred electron binding energies for all divalent and trivalent lanthanide ions in SrI2 which is fully consistent with the spectroscopic observations.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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