Artículos de revistas
Photoluminescence enhancement by gold nanoparticles in Eu(3+) doped GeO(2)-Bi(2)O(3) glasses
Fecha
2009Registro en:
APPLIED PHYSICS LETTERS, v.94, n.10, 2009
0003-6951
10.1063/1.3097241
Autor
KASSAB, Luciana R. P.
SILVA, Diego S. da
ALMEIDA, Ricardo de
ARAUJO, Cid B. de
Institución
Resumen
We report large photoluminescence (PL) enhancement in Eu(3+)-doped GeO(2)-Bi(2)O(3) glasses containing gold nanoparticles (NPs). Growth of approximate to 1000% in the PL intensity corresponding to the Eu(3+) transition (5)D(0)->(7)F(2), at 614 nm, was observed in comparison with a reference sample that does not contain gold NPs. Other PL bands from 580 to 700 nm are also enhanced. The enhancement of the PL intensity is attributed to the increased local field in the Eu(3+) locations due to the presence of the NPs and the energy transfer from the excited NPs to the Eu(3+) ions.