Structural and thermodynamic properties of anionically substituted solid solution ceramics Y(VO4)1-(PO4) with zircon structure

Thermal Quenching Mechanism of Metal–Metal Charge Transfer State Transition Luminescence Based on Double-Band-Gap Modulation

“…In this work, the phosphor YV 1– x P x O 4 :Bi 3+ was modified by crystal engineering. The vanadate and phosphate have a tendency for mutual transformation. , When the coordination cation P 5+ is used to replace V 5+ , because of the weakening of the crystal field intensity, the band gap of the activator Bi 3+ increases from 3.44 to 3.76 eV; simultaneously, the interaction between P 5+ and Y 5+ leads to the widening of the matrix band gap from 2.75 eV to 3.16 eV. Surprisingly, the thermal stability of the phosphor YV 1– x P x O 4 :Bi 3+ is greatly improved.…”

New Structural Design Strategy: Optical Center VO4-Activated Broadband Yellow Phosphate Phosphors for High-Color-Rendering WLEDs

“…On the other hand, this strategy provides phosphor designers with much flexibility to carefully select thermally stable non-vanadate hosts for improving the luminescence thermal stability of VO 4 -activated phosphors. It is reported that vanadate and phosphate have a tendency to mutually transform, − making it is possible to construct VO 4 centers by substituting P 5+ in phosphate with V 5+ . Recently, the KBCP compound with a β-K 2 SO 4 -type structure, featuring a large band gap and high thermal stability, has attracted considerable attention as a host matrix of advanced phosphors .…”