Abstract
© 2018 Elsevier B.V. Photoluminescence of Ce3+- and Pr3+-activated Sr2GeO4powders was measured between 17 and 600 K. For both ions strong 4fn−15dn→4fn(d-f) emission is observed at low temperatures, around 410 nm (Ce3+) and 280 nm (Pr3+). The Ce3+d-f emission quenches starting at 150 K and disappearing completely just above room
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