NaNbO(3):Pr(3+): a new red phosphor showing persistent luminescence.
J Phys Condens Matter
; 21(2): 025901, 2009 Jan 14.
Article
in En
| MEDLINE
| ID: mdl-21813990
ABSTRACT
The Pr(3+)-doped NaNbO(3) perovskite is introduced as a new red phosphor excitable in the near UV region at around 350 nm. A bright single red emission is observed at room temperature and ascribed to transitions between the (1)D(2) excited state and the ground state (3)H(4) of Pr(3+) ions. This peculiar behavior is related to the presence of a low-lying intervalence charge transfer state that contributes to quench the emission from the otherwise emitting (3)P(0) level. Red afterglow is also evidenced in NaNbO(3)Pr(3+). A preliminary model is discussed to clarify the afterglow mechanism.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
J Phys Condens Matter
Journal subject:
BIOFISICA
Year:
2009
Type:
Article