Journal
NANO LETTERS
Volume 10, Issue 10, Pages 4166-4174Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl102451c
Keywords
CdSe nanocrystals; gold nanoparticles; silica coating; photoluminescence; blinking suppression
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Funding
- Humboldt Foundation
- DFG [ME 1380/13-1]
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The optical properties of nanocrystals arc drastically changed by the interaction with adjacent metal nanoparticules By time-resolved photoluminescence spectroscopy. we investigate CdSe multishell nanocrystals coupled to self-assembled films of Au nanoparticles The distance between emitter and metal is adjusted by coating the nanocrystals with silica shells These NCs showed increased fluorescence intensity, a decreased fluorescence lifetime, strong blinking suppression, and fluorescence from gray states These observations can be explained by the metal particle induced change of excitation and recombination rates
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