Enhanced thermally stable performance of Pr³⁺-doped vanadate phosphor by inhibiting the intervalence charge transfer quenching channel

Abstract

Praseodymium (Pr3+) ion and the transition metal vanadium (V5+) ion with d0 electronic configuration can form an intervalence charge transfer (IVCT) band, which can function both as a compensatory channel...

Achieved High-Sensitivity Single-Band Ratiometric Optical Thermometry by Manipulating the Intervalence Charge-Transfer Band Position

“…Pr 3+ ions have been widely studied because of their abundant emission energy levels, and the main research focuses on their luminescence color modulation with different energy levels emission in dual-band ratiometric thermometry. , Notably, Pr 3+ can form an intervalence charge-transfer (IVCT) state with transition-metal ions with d 0 configuration (such as Ti 4+ , Nb 5+ , V 5+ , and W 6+ ), thereby providing a new transfer channel for electrons from the 3 P 0 level to the 1 D 2 level, − and further improving the thermal stability of 1 D 2 level emission. Therefore, it is feasible to consider designs that modulate the position of the IVCT band to achieve differences in the thermal response of the 1 D 2 emission.…”