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

Lozano, Gabriel; Louwers, Davy J; Rodriguez, S. R. K.; Murai, Shinji; Jansen, Olaf Ta; Verschuuren, Marc A.; Rivas, Jaime Gómez

doi:10.1038/lsa.2013.22

Cited by 342 publications

(347 citation statements)

References 45 publications

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“…More recent applications are emerging, leveraging this understanding of plasmonic optical properties and relying on the rigorous modelling offered by electromagnetic theory: we can cite for example the development of new types of chiroptical spectroscopies [12], the enhancement of photochemical reactions on surfaces [13][14][15][16], enhanced light emission in LEDs [17], or improved photovoltaics [18][19][20]. Many of these existing and emerging applications are underpinned by the fact that the optical (electronic) absorption of molecules on the surface of metallic NPs is enhanced.…”

mentioning

confidence: 99%

Modified optical absorption of molecules on metallic nanoparticles at sub-monolayer coverage

Darby¹,

Auguié²,

Meyer³

et al. 2015

Nature Photon

137

192

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Enhanced optical absorption of molecules in the vicinity of metallic nanostructures is key to a number of surface-enhanced spectroscopies and of great general interest to the fields of plasmonics and nano-optics. Yet, experimental access to this absorbance has long proven elusive. We here present direct measurements of the intrinsic absorbance of dye-molecules adsorbed onto silver nanospheres, and crucially, at sub-monolayer concentrations where dye-dye interactions become negligible. With a large detuning from the plasmon resonance, distinct shifts and broadening of the molecular resonances reveal the intrinsic properties of the dye in contact with the metal colloid, in contrast to the often studied strong-coupling regime where the optical properties of the dye-molecules cannot be isolated. The observation of these shifts together with the ability to routinely measure them has broad implications in the interpretation of experiments involving resonant molecules on metallic surfaces, such as surface-enhanced spectroscopies and many aspects of molecular plasmonics.Over the last two decades, the optical properties of metallic nanoparticles (NPs) of various sizes and shapes [1] [18][19][20]. Many of these existing and emerging applications are underpinned by the fact that the optical (electronic) absorption of molecules on the surface of metallic NPs is enhanced. But spectral changes induced by molecular adsorption are often ignored because of the experimental challenge of measuring surface absorbance spectra on nanoparticles, despite early attempts more than 30 years ago [21].This question is not directly addressed in the great number of recent studies devoted to the topic of strongcoupling between plasmons and molecules [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]; in this regime, the plasmon-molecule interaction is evidenced by a typical anti-crossing of the two resonances as a function of detuning [25,33], but in such a strongly interacting system the molecular response cannot be isolated. Moreover, in such studies the dye concentration is often large (typically monolayer coverage and above) to maximize dye/plasmon interactions. Dye-dye interactions cannot therefore be neglected and are expected to induce resonance shifts of the dye layer independently of any plas- * Eric.LeRu@vuw.ac.nz monic effects; in fact many studies specifically work with J-aggregates rather than isolated dyes [22, 25-27, 31, 33]. As a result, the intrinsic effect (chemical and/or electromagnetic) of the NP on an isolated adsorbed molecule cannot be elucidated. To this aim, we will show that it is necessary to measure the absorbance of the dye when the dye and plasmon resonances are detuned (to avoid dye-plasmon interaction effects) and at low surface coverage (to avoid dye-dye interaction effects). This low surface coverage poses a significant experimental challenge because the dye absorbance is then very small and obscured by the large optical response (absorption and scattering) of the NPs.We here propose to measure NP/d...

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mentioning

confidence: 99%

Modified optical absorption of molecules on metallic nanoparticles at sub-monolayer coverage

Darby¹,

Auguié²,

Meyer³

et al. 2015

Nature Photon

137

192

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“…The former could overcome the traditional diffraction limit in dielectric optics and be the key approach to overcoming the bottleneck of the miniaturization of nanophotonic devices and large-scale on-chip integrated circuits for next-generation information technology. [5][6][7][8][9][10][11] The extremely enhanced EM field caused by the latter has great application values in various fields, such as surface-enhanced spectrum, [12][13][14][15] surface plasmon resonance sensors, [16][17][18][19] ultra transmission, 20,21 plasmonic trapping, 22,23 plasmonic-enhanced emission, 24,25 quantum communication, 26,27 super-resolution microscopy, 28 cloaking, 29 photothermal cancer therapy, 30,31 steam generation, 30,32,33 holography, 34 photovoltaics [35][36][37] and water splitting. [38][39][40] One of the most promising applications of SPPs, especially localized SPPs, is surface-enhanced Raman scattering (SERS), which has been studied both theoretically and experimentally for many decades.…”

Section: Introductionmentioning

confidence: 99%

Nanowire-supported plasmonic waveguide for remote excitation of surface-enhanced Raman scattering

et al. 2014

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Due to its amazing ability to manipulate light at the nanoscale, plasmonics has become one of the most interesting topics in the field of light-matter interaction. As a promising application of plasmonics, surface-enhanced Raman scattering (SERS) has been widely used in scientific investigations and material analysis. The large enhanced Raman signals are mainly caused by the extremely enhanced electromagnetic field that results from localized surface plasmon polaritons. Recently, a novel SERS technology called remote SERS has been reported, combining both localized surface plasmon polaritons and propagating surface plasmon polaritons (PSPPs, or called plasmonic waveguide), which may be found in prominent applications in special circumstances compared to traditional local SERS. In this article, we review the mechanism of remote SERS and its development since it was first reported in 2009. Various remote metal systems based on plasmonic waveguides, such as nanoparticle-nanowire systems, single nanowire systems, crossed nanowire systems and nanowire dimer systems, are introduced, and recent novel applications, such as sensors, plasmon-driven surface-catalyzed reactions and Raman optical activity, are also presented. Furthermore, studies of remote SERS in dielectric and organic systems based on dielectric waveguides remind us that this useful technology has additional, tremendous application prospects that have not been realized in metal systems.

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“…In particular, aluminum in nanostructured form has received much recent attention for several reasons: its plasmon resonance is tunable across the entire visible wavelength range, it is an inherently low-cost, sustainable material, and it is compatible with complementary metal-oxide semiconductor (CMOS) manufacturing techniques. 15,17 These factors make aluminum particularly attractive for large-area technological applications, including solar cells, 18,19 filters for color imaging, [20][21][22][23][24] photodetectors, 25 solid-state lighting components, 26 and flat-panel displays. 27,28 To construct plasmonic color devices, nanostructures are typically grouped into micron-scale arrays known as pixels.…”

mentioning

confidence: 99%

High Chromaticity Aluminum Plasmonic Pixels for Active Liquid Crystal Displays

Olson¹,

Manjavacas

Basu³

et al. 2015

ACS Nano

156

179

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Chromatic devices such as flat panel displays could, in principle, be substantially improved by incorporating aluminum plasmonic nanostructures instead of conventional chromophores that are susceptible to photobleaching. In nanostructure form, aluminum is capable of producing colors that span the visible region of the spectrum while contributing exceptional robustness, low cost, and streamlined manufacturability compatible with semiconductor manufacturing technology. However, individual aluminum nanostructures alone lack the vivid chromaticity of currently available chromophores because of the strong damping of the aluminum plasmon resonance in the visible region of the spectrum. In recent work, we showed that pixels formed by periodic arrays of Al nanostructures yield far more vivid coloration than the individual nanostructures. This progress was achieved by exploiting far-field diffractive coupling, which significantly suppresses the scattering response on the long-wavelength side of plasmonic pixel resonances. In the present work, we show that by utilizing another collective coupling effect, Fano interference, it is possible to substantially narrow the short-wavelength side of the pixel spectral response. Together, these two complementary effects provide unprecedented control of plasmonic pixel spectral line shape, resulting in aluminum pixels with far more vivid, monochromatic coloration across the entire RGB color gamut than previously attainable. We further demonstrate that pixels designed in this manner can be used directly as switchable elements in liquid crystal displays and determine the minimum and optimal numbers of nanorods required in an array to achieve good color quality and intensity.

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

Cited by 342 publications

References 45 publications

Modified optical absorption of molecules on metallic nanoparticles at sub-monolayer coverage

Modified optical absorption of molecules on metallic nanoparticles at sub-monolayer coverage

Nanowire-supported plasmonic waveguide for remote excitation of surface-enhanced Raman scattering

High Chromaticity Aluminum Plasmonic Pixels for Active Liquid Crystal Displays

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