Off-resonance surface plasmon enhanced spontaneous emission from CdTe quantum dots
Item Type:Journal Article
Citation:Vamsi K Komarala, Yury P Rakovich, A. L. Bradley, Stephen J Byrne, Serena A Corr, Yurii K Gun'ko, A. Eychmuller and N. Gaponik, Off-resonance surface plasmon enhanced spontaneous emission from CdTe quantum dots, Applied Physics Letters, 89, 2006, 253118 - 253120
Off-resonance surface plasmon enhanced spontaneous emission from CdTe quantum dots.pdf (Published (publisher's copy) - Peer Reviewed) 75.45Kb
Surface plasmon (SP) enhanced photoluminescence (PL) from CdTe quantum dots (QDs) on monolayers of Au nanoparticles is investigated under both resonant and nonresonant conditions. Enhancement of the QD PL intensity is observed when the emission spectrum is redshifted with respect to the SP absorption resonance. Coupling to the SPs results in a redshift and broadening of the PL spectrum, and an increase in the PL decay rate. The largest coupling is observed for QD monolayers with peak emission at 667?nm, producing a ten fold increase in PL intensity. No change in PL intensity and decay rate is observed at the SP resonance.
This paper was selected for inclusion in the Virtual Journal of Nanoscale Science and Technology 15, 2 (2007).
Type of material:Journal Article
Series/Report no:Applied Physics Letters
Availability:Full text available