We give the spectroscopic evidence of energy transfer to erbium ions provided by SnO2 nanocrystals in silica. The spectral and time resolved analysis of the nanocluster luminescence resonant with Er3+ transitions demonstrates that erbium ions take part to energy-transfer mechanisms with an efficiency of about 20%. The spectral features of erbium emission excited by energy transfer allow to ascribe it to Er3+ sites in ordered environments, nearby crystalline tin-dioxide nanoclusters. © 2006 The American Physical Society.
Brovelli, S., Chiodini, N., Lauria, A., Meinardi, F., Paleari, A. (2006). Energy transfer to erbium ions from wide-band-gap SnO2 nanocrystals in silica. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 73(7), 073406-1-073406-4 [10.1103/PhysRevB.73.073406].
Energy transfer to erbium ions from wide-band-gap SnO2 nanocrystals in silica
BROVELLI, SERGIO;CHIODINI, NORBERTO;MEINARDI, FRANCESCO;PALEARI, ALBERTO MARIA FELICE
2006
Abstract
We give the spectroscopic evidence of energy transfer to erbium ions provided by SnO2 nanocrystals in silica. The spectral and time resolved analysis of the nanocluster luminescence resonant with Er3+ transitions demonstrates that erbium ions take part to energy-transfer mechanisms with an efficiency of about 20%. The spectral features of erbium emission excited by energy transfer allow to ascribe it to Er3+ sites in ordered environments, nearby crystalline tin-dioxide nanoclusters. © 2006 The American Physical Society.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
