Distance Dependence of the Energy Transfer Rate From a Single Semiconductor Nanostructure to Graphene
| Autor: | Federspiel, François, Froehlicher, Guillaume, Nasilowski, Michel, Pedetti, Silvia, Mahmood, Ather, Doudin, Bernard, Park, Serin, Lee, Jeong-O, Halley, David, Dubertret, Benoît, Gilliot, Pierre, Berciaud, Stéphane |
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| Rok vydání: | 2015 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1021/nl5044192 |
| Popis: | The near-field Coulomb interaction between a nano-emitter and a graphene monolayer results in strong F\"orster-type resonant energy transfer and subsequent fluorescence quenching. Here, we investigate the distance dependence of the energy transfer rate from individual, i) zero-dimensional CdSe/CdS nanocrystals and ii) two-dimensional CdSe/CdS/ZnS nanoplatelets to a graphene monolayer. For increasing distances $d$, the energy transfer rate from individual nanocrystals to graphene decays as $1/d^4$. In contrast, the distance dependence of the energy transfer rate from a two-dimensional nanoplatelet to graphene deviates from a simple power law, but is well described by a theoretical model, which considers a thermal distribution of free excitons in a two-dimensional quantum well. Our results show that accurate distance measurements can be performed at the single particle level using graphene-based molecular rulers and that energy transfer allows probing dimensionality effects at the nanoscale. Comment: Main text (+ 5 figures) and Supporting Information (+ 7 figures) |
| Databáze: | arXiv |
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