Excitation Enhancement of a Quantum Dot Coupled to a Plasmonic Antenna

Bermúdez‐Ureña, Esteban; Kreuzer, Mark P.; Itzhakov, Stella; Rigneault, Hervé; Quidant, Romain; Oron, Dan; Wenger, Jérôme

doi:10.1002/adma.201202783

Cited by 71 publications

(75 citation statements)

References 36 publications

(91 reference statements)

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“…The presence of the GND can also modify the SiNCs' emission pattern (antenna effect)24. To evidence this phenomenon we measured the PL intensity in the back focal plane (Fourier plane or momentum space) of the water objective, this intensity being directly related to the angular distribution of the emitted luminescence.…”

Section: Resultsmentioning

confidence: 99%

Plasmonic engineering of spontaneous emission from silicon nanocrystals

Goffard

Gérard

Miska

et al. 2013

Sci Rep

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Silicon nanocrystals offer huge advantages compared to other semi-conductor quantum dots as they are made from an abundant, non-toxic material and are compatible with silicon devices. Besides, among a wealth of extraordinary properties ranging from catalysis to nanomedicine, metal nanoparticles are known to increase the radiative emission rate of semiconductor quantum dots. Here, we use gold nanoparticles to accelerate the emission of silicon nanocrystals. The resulting integrated hybrid emitter is 5-fold brighter than bare silicon nanocrystals. We also propose an in-depth analysis highlighting the role of the different physical parameters in the photoluminescence enhancement phenomenon. This result has important implications for the practical use of silicon nanocrystals in optoelectronic devices, for instance for the design of efficient down-shifting devices that could be integrated within future silicon solar cells.

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Section: Resultsmentioning

confidence: 99%

Plasmonic engineering of spontaneous emission from silicon nanocrystals

Goffard

Gérard

Miska

et al. 2013

Sci Rep

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“…34 In most studies the individual contributions of excitation and QY changes to the total fluorescence enhancement have not been disentangled. In general, for simpler fluorophores, only a few experimental studies have investigated this 14,35,36 and quantified the specific contribution of the radiative and non-radiative decay rate enhancement. 25,37,38 Here, we report the complete characterization (polarization, spectra and lifetime) of the enhanced emission of light-harvesting complex 2 (LH2) from purple photosynthetic bacteria when coupled to a gold nanorod antenna.…”

Section: Introductionmentioning

confidence: 99%

Nanoantenna enhanced emission of light-harvesting complex 2: the role of resonance, polarization, and radiative and non-radiative rates

Wientjes

Renger

Curto

et al. 2014

Phys. Chem. Chem. Phys.

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Nanoantennae show potential for photosynthesis research for two reasons; first by spatially confining light for experiments which require high spatial resolution, and second by enhancing the photon emission of single light-harvesting complexes. For effective use of nanoantennae a detailed understanding of the interaction between the nanoantenna and the light-harvesting complex is required.Here we report how the excitation and emission of multiple purple bacterial LH2s (light-harvesting complex 2) are controlled by single gold nanorod antennae. LH2 complexes were chemically attached to such antennae, and the antenna length was systematically varied to tune the resonance with respect to the LH2 absorption and emission. There are three main findings. (i) The polarization of the LH2 emission is fully controlled by the resonant nanoantenna. (ii) The largest fluorescence enhancement, of 23 times, is reached for excitation with light at l = 850 nm, polarized along the long antenna-axis of the resonant antenna. The excitation enhancement is found to be 6 times, while the emission efficiency is increased 3.6 times. (iii) The fluorescence lifetime of LH2 depends strongly on the antenna length, with shortest lifetimes of B40 ps for the resonant antenna. The lifetime shortening arises from an 11 times resonant enhancement of the radiative rate, together with a 2-3 times increase of the non-radiative rate, compared to the off-resonant antenna. The observed length dependence of radiative and non-radiative rate enhancement is in good agreement with simulations. Overall this work gives a complete picture of how the excitation and emission of multi-pigment light-harvesting complexes are influenced by a dipole nanoantenna.

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“…A common requirement of most of these applications is the need to place a target entity in vicinity of antenna's hotspot, in order to be able to exploit the enhanced fields and/or to enhance target's functionality via interaction with the antenna. A lot of progress has been made recently to selectively deliver target entities to hotspots of dimer antennas, [17][18][19] since high field enhancements can be achieved in these configurations. In fact, the enhancement itself can be exploited in order to achieve selective localization of target entities.…”

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confidence: 99%

Plasmonic Control of Radiative Properties of Semiconductor Quantum Dots Coupled to Plasmonic Ring Cavities

2015

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(Word Style "BD_Abstract").In recent years, a lot of effort has been made to achieve controlled delivery of target particles to the hotspots of plasmonic nano-antennas, in order to probe and/or exploit the extremely large field enhancements produced by such structures. While in many cases such high fields are advantageous, there are instances where they should be avoided. In this work, we consider the implications of using the standard nanoantenna geometries when colloidal quantum dots are employed as target entities. We show that in this case, and for various reasons, dimer antennas are not the optimum choice. Plasmonic Ring Cavities are a better option despite low field enhancements, as they allow collective coupling of many quantum dots in a reproducible and

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Excitation Enhancement of a Quantum Dot Coupled to a Plasmonic Antenna

Cited by 71 publications

References 36 publications

Plasmonic engineering of spontaneous emission from silicon nanocrystals

Plasmonic engineering of spontaneous emission from silicon nanocrystals

Nanoantenna enhanced emission of light-harvesting complex 2: the role of resonance, polarization, and radiative and non-radiative rates

Plasmonic Control of Radiative Properties of Semiconductor Quantum Dots Coupled to Plasmonic Ring Cavities

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