Visible quantum cutting in Pr3+:PbWO4 crystal through energy transfer between the host and Pr3+ ions

Visible quantum cutting has been observed in Pr3+-doped PbWO4 crystal under ultraviolet excitation. Quantum cutting in this crystal consists of the 1S0 → 1D2 (around 325 nm) and 1D2 → 3H4 transitions (around 604 nm). Energy transfers between the host and Pr3+ ions can convert the ultraviolet emission from the 1S0 → 1D2 transition into a visible emission from the 3PJ (J = 0, 1) and 1D2 multiplets in the range of 490–650 nm. This work provides a potential approach for the development of high efficient visible quantum cutting phosphors and scintillators.