Highly efficient nonradiative energy transfer using charged CdSe/ZnS nanocrystals for light-harvesting in solution

Mutlugün, E.Nizamoğlu, S.Demir, Hilmi Volkan2016-02-082016-02-082009-07-200003-6951http://hdl.handle.net/11693/22684We propose and demonstrate highly efficient nonradiative Förster resonance energy transfer (FRET) facilitated by the use of positively charged CdSe/ZnS core-shell nanocrystals (NCs) for light-harvesting in solution. With rhodamine B dye molecules used as the acceptors, our time-resolved photoluminescence measurements show substantial lifetime modifications of these amine-functionalized NC donors from 18.16 to 1.88 ns with FRET efficiencies >90% in solution. These strong modifications allow for light-harvesting beyond the absorption spectral range of the acceptor dye molecules.EnglishCdSe/ZnSCore-Shell NanocrystalsDye moleculeFunctionalizedLight-harvestingNon-radiativeNonradiative energy transferPositively chargedResonance energy transferRhodamine B dyeSpectral rangeTime-resolved photoluminescenceAminesEnergy transferNanocrystalsHarvestingHighly efficient nonradiative energy transfer using charged CdSe/ZnS nanocrystals for light-harvesting in solutionArticle10.1063/1.3182798