Luminescence of Ca(NbO3)2:Pr3+ at ambient and high hydrostatic pressure

In this contribution, photoluminescence and time-resolved photoluminescence spectra of Ca(NbO3)2 doped with Pr3+ obtained at high hydrostatic pressure up to 72 kbar applied in a diamond anvil cell are presented. At ambient conditions, the emission spectrum obtained in the time interval 0–1 μs is dominated by spin-allowed transitions from the 3P0 state. On the other hand, transitions from 1D2, characterized by a decay time equal to 30 μs dominate the steady-state luminescence.