Optimized plasmonic nanoparticle distributions for solar spectrum harvesting

Cole, Joseph R.; Halas, Naomi J.

doi:10.1063/1.2360918

Cited by 189 publications

(135 citation statements)

References 21 publications

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“…Only those eigenstates ͑or resonances͒ with strong near electric fields are physically meaningful. [1][2][3][4][5][6][7][8] To select those SPRs, we have defined the resonance capacity in the function of the internal energy of the nanostructures. 19 In binary nanostructures, for each s n , the joint resonance capacity is …”

Section: ͑5͒mentioning

confidence: 99%

“…However, in branches 4 and 7, there is a giant near field enhancement within the gaps, which is caused by the redistribution or polarization of electrons 23 in the neighboring metal and can be applied to various plasmonic devices. [1][2][3][4][5] Next, let us focus on branches 5 and 6 in Fig. 2.…”

Section: Fig 2 ͑Color Online͒ Spr With Varying For the Parallel Casmentioning

confidence: 99%

“…Surface plasmon resonances ͑SPRs͒ of metallic nanoparticles enable important applications based on surfaceenhanced Raman scattering, 1 biosensors and nanometer plasmonic waveguides, 2 optical antennas, 3 solar cells, 4,5 and nonlinear optical frequency mixing. [6][7][8] In practice, it is necessary to adjust the resonance wavelength as well as to design the enhanced near field.…”

Section: Introductionmentioning

confidence: 99%

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Controlling plasmonic resonances in binary metallic nanostructures

Martin

et al. 2010

Journal of Applied Physics

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Investigation on the interplay of plasmonic resonances in binary nanostructures indicated that, at a fixed wavelength, with a variation in the difference permittivity ratio = ͑⑀ 2 − ⑀ 0 / ⑀ 1 − ⑀ 0 ͒, resonances exhibit the dielectric effect, resonance chaos, collective resonance, resonance flat, and new branch regions. This means that plasmonic resonances can be controlled by material parameters ⑀ 1 and ⑀ 2 . In this work, using the Green's matrix method of solving the surface plasmon resonances, we first study the resonance combination of symmetrical binary three-nanostrip systems. Several resonance branches extend across the above mentioned regions. Near fields within the gaps and at the ends of nanostrips are greatly enhanced due to the influence of neighboring metallic material. Then, along each resonance branch, resonances in the dielectric permittivity region are mapped into the wavelength region of gold. Through adjusting material parameters ⑀ 1 and ⑀ 2 , the resonance wavelength is tuned from R = 500 to 1500 nm, while for a single nanostrip it is only at R = 630 nm. We also find that comparable permittivity parameters ⑀ 1 ͑or ⑀ 2 ͒ and ⑀ Au ͑ ͒ can control resonance wavelength and intensity effectively. High dielectric permittivity of the neighboring metal has also an advantage in a giant enhancement of the near field. These findings provide new insights into design of hybrid plasmonic devices as plasmonic sensors.

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Section: ͑5͒mentioning

confidence: 99%

Section: Fig 2 ͑Color Online͒ Spr With Varying For the Parallel Casmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Controlling plasmonic resonances in binary metallic nanostructures

Martin

et al. 2010

Journal of Applied Physics

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“…This is in part because of the relatively narrow optical wavelength range in which typical donor and acceptor molecules absorb strongly. Seemingly the tunability of particle plasmon resonances via variation of their shapes, size, and dielectric environment should allow a broader spectral absorption range [4] for hybrid metallic nanostructure/OSC devices, which might be expected to produce enhanced solar cell efficiency [5][6][7][8][9][10], as has been found for Si-based devices [11]. Reports of the efficacy of this approach [5][6][7][8][9][10]12] however are contradictory.…”

Section: Introductionmentioning

confidence: 99%

Effect of Extended Extinction from Gold Nanopillar Arrays on the Absorbance Spectrum of a Bulk Heterojunction Organic Solar Cell

et al. 2015

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Abstract:We report on the effects of enhanced absorption/scattering from arrays of Au nanopillars of varied size and spacing on the spectral response of a P3HT:PCBM bulk heterojunction solar cell. Nanopillar array-patterned devices do show increased optical extinction within a narrow range of wavelengths compared to control samples without such arrays. The measured external quantum efficiency and calculated absorbance, however, both show a decrease near the corresponding wavelengths. Numerical simulations indicate that for relatively narrow nanopillars, the increased optical extinction is dominated by absorption within the nanopillars, rather than scattering, and is likely dissipated by Joule heating.

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“…In metallic nanoparticles, the dominant resonant absorption peak typically occurs in the visible spectrum but can be modified by varying the particle size, shape or shell material. Cole et al proposed that a combination of as little as three metallic nanoparticles types can selectively absorb the majority of the solar spectrum [90]; in this case, the optimized composition of nanoparticles was found to contain nanospheres and nanoshells ranging from 32 nm to 58 nm.…”

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confidence: 99%

Heat Transfer Fluids

Lenert

Nam

Wang

2012

Annual Rev Heat Transfer

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The choice of heat transfer fluids has significant effects on the performance, cost and reliability of solar thermal systems. In this chapter, we evaluate existing heat transfer fluids such as oils and molten salts based on a new figure of merit capturing the combined effects of thermal storage capacity, convective heat transfer characteristics and hydraulic performance of the fluids.Thermal stability, freezing point and safety issues are also discussed. Through a comparative analysis, we examine alternative options for solar thermal heat transfer fluids including watersteam mixtures (direct steam), ionic liquids/melts and suspensions of nanoparticles (nanofluids), focusing on the benefits and technical challenges. DOI: 10.1615/AnnualRevHeatTransfer.2012004122 SOURCE: Lenert, Andrej, Youngsuk Nam, and Evelyn N. Wang. "Heat Transfer Fluids." Annual Review of Heat Transfer 15, 2012. 2 DOI: 10.1615/AnnualRevHeatTransfer.2012004122 SOURCE: Lenert, Andrej, Youngsuk Nam, and Evelyn N. Wang. "Heat Transfer Fluids." Annual Review of Heat Transfer 15, 2012. 3 V averaged bulk velocity (ms -1 )

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Optimized plasmonic nanoparticle distributions for solar spectrum harvesting

Cited by 189 publications

References 21 publications

Controlling plasmonic resonances in binary metallic nanostructures

Controlling plasmonic resonances in binary metallic nanostructures

Effect of Extended Extinction from Gold Nanopillar Arrays on the Absorbance Spectrum of a Bulk Heterojunction Organic Solar Cell

Heat Transfer Fluids

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