Nanoantenna array-induced fluorescence enhancement and reduced lifetimes

Bakker, Reuben M.; Drachev, Vladimir P.; Liu, Zhengtong; Yuan, Hsiao-Kuan; Pedersen, Rasmus H.; Boltasseva, Alexandra; Chen, Jiji; Irudayaraj, Joseph; Kildishev, Alexander V.; Shalaev, Vladimir M.

doi:10.1088/1367-2630/10/12/125022

Cited by 118 publications

(119 citation statements)

References 53 publications

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“…This demonstration of the PLDE of highly efficient emitters contradicts the idea that plasmonic structures are detrimental to the performance of devices using high QE emitters because of inherent Ohmic losses in metals. [37][38][39] To facilitate further investigation of how the plasmonic array enhances and shapes, the fluorescence of the emitting layer, cuts of the spectra presented in Figure 2a and 2b at h50 6 are displayed in Figure 2c and 2d. Two types of resonances with different line widths can be observed in the measured extinction spectrum: (i) a broad resonance centered at 1.85 eV, which is attributed to localized surface plasmons in individual particles and (ii) three narrow peaks at 2.00 eV, 2.04 eV and 2.11 eV, associated with collective lattice modes.…”

Section: Resultsmentioning

confidence: 99%

Plasmonics for solid-state lighting: enhanced excitation and directional emission of highly efficient light sources

et al. 2013

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Light sources based on reliable and energy-efficient light-emitting diodes (LEDs) are instrumental in the development of solid-state lighting (SSL). Most research efforts in SSL have focused on improving both the intrinsic quantum efficiency (QE) and the stability of light emitters. For this reason, it is broadly accepted that with the advent of highly efficient (QE close to 1) and stable emitters, the fundamental research phase of SSL is coming to an end. In this study, we demonstrate a very large improvement in SSL emission (above 70-fold directional enhancement for p-polarized emission and 60-fold enhancement for unpolarized emission) using nanophotonic structures. This is attained by coupling emitters with very high QE to collective plasmonic resonances in periodic arrays of aluminum nanoantennas. Our results open a new path for fundamental and applied research in SSL in which plasmonic nanostructures are able to mold the spectral and angular distribution of the emission with unprecedented precision.

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Section: Resultsmentioning

confidence: 99%

Plasmonics for solid-state lighting: enhanced excitation and directional emission of highly efficient light sources

et al. 2013

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“…First, in accordance with the nanoantenna concept and the relevant experimental evidences, metal nanoparticles may alter angular distribution of emitted light and can be used to enhance directionality of light emission. [41][42][43][44][45][46][47][48] Second, plasmonic structures can be used to enhance modulation rate of LEDs 49 and single photon emission rate. 50 Third, plasmonics can be used to diminish LED efficiency droop resulting from Auger recombination.…”

Section: Discussionmentioning

confidence: 99%

Plasmonic enhancement of electroluminescence

2018

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Here plasmonic effect specifically on electroluminescence (EL) is studied in terms of radiative and nonradiative decay rates for a dipole near a metal spherical nanoparticle (NP). Contribution from scattering is taken into account and is shown to play a decisive role in EL enhancement owing to pronounced size-dependent radiative decay enhancement and weak size effect on non-radiative counterpart. Unlike photoluminescence where local incident field factor mainly determines the enhancement possibility and level, EL enhancement is only possible by means of quantum yield rise, EL enhancement being feasible only for an intrinsic quantum yield Q0 < 1. The resulting plasmonic effect is independent of intrinsic emitter lifetime but is exclusively defined by the value of Q0, emission spectrum, NP diameter and emitter-metal spacing. For 0.1< Q0 < 0.25, Ag nanoparticles are shown to enhance LED/OLED intensity by several times over the whole visible whereas Au particles feature lower effect within the red-orange range only. Independently of positive effect on quantum yield, metal nanoparticles embedded in an electroluminescent device will improve its efficiency at high currents owing to enhanced overall recombination rate which will diminish manifestation of Auger processes. The latter are believed to be responsible for the known undesirable efficiency droop in semiconductor commercial quantum well based LEDs at higher current. For the same reason plasmonics can diminish quantum dot photodegradation from Auger process induced non-radiative recombination and photoionization thus opening a way to avoid negative Auger effects in emerging colloidal semiconductor LEDs.

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“…[1][2][3] Many of the most attractive modern systems operate on the basis of the distinctive dispersion properties and intense plasmonic response of metallic nanoparticles at optical frequencies, and one of the most appealing facets of such systems is their capacity to steer directional emission through nanoantenna-emitter coupling -especially by interface with gold nanoantennas. [4][5][6][7][8][9][10][11][12][13][14][15][16][17] Alongside these developments, a range of other plasmonic and dielectric methods have also been demonstrated to provide for enhanced rates of fluorescence [18][19][20][21][22] and resonance energy transfer, 23,24 from and between nanoscale components. Moreover, there is recent theory work that has identified new opportunities for nonlinear optical techniques to improve data capture in fluorescence microscopy and imaging.…”

Section: Introductionmentioning

confidence: 99%

On the detection of characteristic optical emission from electronically coupled nanoemitters

Ford

Andrews

2013

SPIE Proceedings

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Optical emission from an electronically coupled pair of nanoemitters is investigated, in a new theoretical development prompted by experimental work on oriented semiconductor polymer nanostructures. Three physically distinct mechanisms for photon emission by such a pair, positioned in the near-field, are identified: emission from a pairdelocalized exciton state, emission that engages electrodynamic coupling through quantum interference, and correlated photon emission from the two components of the pair. Each possibility is investigated, in detail, by examination of the emission signal via explicit coupling of the nanoemitter pair with a photodetector, enabling calculations to give predictive results in a form directly tailored for experiment. The analysis incorporates both near-and far-field properties (determined from the detector-pair displacement), so that the framework is applicable not only to a conventional remote detector, but also a near-field microscope setup. The results prove strongly dependent on geometry and selection rules. This work paves the way for a broader investigation of pairwise coupling effects in the optical emission from structured nanoemitter arrays.

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Nanoantenna array-induced fluorescence enhancement and reduced lifetimes

Cited by 118 publications

References 53 publications

Plasmonics for solid-state lighting: enhanced excitation and directional emission of highly efficient light sources

Plasmonics for solid-state lighting: enhanced excitation and directional emission of highly efficient light sources

Plasmonic enhancement of electroluminescence

On the detection of characteristic optical emission from electronically coupled nanoemitters

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