期刊
NANO LETTERS
卷 10, 期 8, 页码 3068-3072出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl101614s
关键词
Near-field imaging; seeded nanorods; fluorescence quenching and enhancement; excitons; fluorescence lifetime
类别
资金
- Israel Science Foundation [1704/07]
- Minerva Gesellschaft fur die Forshung GmbH, Munchen
The mixed 0D-1D dimensionality of heterostructurecl semiconductor nanorods, resulting from the dot-in-rod architecture, raises intriguing questions concerning the location and confinement of the exciton and the origin of the fluorescence in such structures. Using apertureless near-field distance-dependent lifetime imaging together with AFM topography, we directly map the emission and determine its location with high precision along different types of nanorods. We find that the fluorescence is emanating from a sub-20 nm region, correlated to the seed location, clearly indicating exciton localization.
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