UV-excited red-emitting phosphors are obtained using Pr3+ as the luminescent activator and host lattices containing closed-shell transition metal ions (especially titanates, vanadates and niobates). In these oxidant lattices, the quenching of the otherwise greenish-blue emitting P-3(0) level is induced by a low-lying Pr-to-metal intervalence charge transfer state (IVCT). A. simple criterion based on the optical electronegativities of the d(0) lattice cations (Mn+) and average Pr3+ - Mn+ distances is proposed to predict P-3(0) quenching in these lattices

Making red emitting phosphors with Pr3+

BETTINELLI, Marco Giovanni
2006-01-01

Abstract

UV-excited red-emitting phosphors are obtained using Pr3+ as the luminescent activator and host lattices containing closed-shell transition metal ions (especially titanates, vanadates and niobates). In these oxidant lattices, the quenching of the otherwise greenish-blue emitting P-3(0) level is induced by a low-lying Pr-to-metal intervalence charge transfer state (IVCT). A. simple criterion based on the optical electronegativities of the d(0) lattice cations (Mn+) and average Pr3+ - Mn+ distances is proposed to predict P-3(0) quenching in these lattices
oxide crystals; Pr3+; luminescence
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/305042
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 145
  • ???jsp.display-item.citation.isi??? 135
social impact