Plasmonic photo-thermoelectric energy converter with black-Si absorber

Komatsu, Ryosuke; Balčytis, Armandas; Seniutinas, Gediminas; Yamamura, Takuya; Nishijima, Yoshiaki; Juodkazis, Saulius

doi:10.1016/j.solmat.2015.06.035

Cited by 38 publications

(23 citation statements)

References 26 publications

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“…The resulting surfaces can be used in large surface area applications and can serve as templates for replication of the nanotexture for numerous applications in rapidly evolving fields such as super-capacitors, electrodes, and optical coatings. Light extraction surfaces for light-emitting diodes and for the control of surface emissivity represent another potential field of applications to add to use in photovoltaics, thermovoltaics, black body light sources, and broadband reflectance suppression coatings; 20,40 all these structures can benefit from hierarchical patterns of nano-microscale structures.…”

Section: Discussionmentioning

confidence: 99%

“…It was previously demonstrated how inductively coupled plasma reactive ion etched (ICP-RIE) b-Si with plasmonic nanoparticles can be used as a highly effective absorber for photo-thermoelectric conversion applications. 20 Nanospikes of b-Si coated with Au have shown high performance when used in surface-enhanced Raman spectroscopy/scattering (SERS) 21 and were also proven to be bactericidal through the mechanical destruction of bacterial membranes. 22 Using a simple chemical treatment in either gas phase or solution, these nanotextured surfaces can also be rendered super-hydrophobic.…”

Section: Introductionmentioning

confidence: 99%

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Anti-reflective surfaces: Cascading nano/microstructuring

Nishijima¹,

Komatsu²,

Ota³

et al. 2016

APL Photonics

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The creation of anti-reflective surfaces is reliant on the engineering of the surface textures and patterns to enable efficient trapping or transmission of light. Here we demonstrate anti-reflective layers composed of hierarchical nano/microscale features that are prepared on Si using a combination of wet and dry etching processes, and which are both scalable and affordable. The performance of the structured surfaces was tested through optical measurements of the reflectance, transmittance, and scattering spectra from the visible to mid-infrared wavelength regions, and the results were verified using numerical simulations to identify the performance of the textured anti-reflective layers. The anti-reflective properties of the layers were shown to be dramatically improved by the composite nanostructured surfaces over a broad spectral range, which thus provides a basis for the design rules that are essential for the progress towards effective anti-reflector fabrication. At normal incidence, the hierarchical surfaces achieve reflectances that are 10–80 times lower than that of conventional single-etch nano-microstructures. Portions of the absorbed, transmitted, scattered, and reflected light in the visible-IR spectrum are presented to illustrate the results.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anti-reflective surfaces: Cascading nano/microstructuring

Nishijima¹,

Komatsu²,

Ota³

et al. 2016

APL Photonics

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“…In general, semiconductor materials such as Si, GaAs, and CdS show Seebeck coefficient (thermoelectric power) and photoresponse under heating [1][2][3]. Nowadays, the BiTe elements are used as commercial Seebeck material, and it displays a thermoelectric power of 570 μV/K achieved with a working temperature up to 573 K in the hot side [4].…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Effect of Buckypaper/Copper Assembly

Pinheiro

Ferreira

Rodrigues

et al. 2019

Journal of Nanotechnology

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Carbon nanotubes (CNTs) exhibit excellent electrical and thermal properties that have been used in several device assemblies, such as electrode sheets made from an aggregate of CNTs, also called as buckypaper (BP). Despite that, the properties of single CNTs are reduced when randomly assembled to form a BP. In this way, this study investigated the thermoelectric effect of a BP electrode assembled on a copper electrode with an active area of 4.0 cm2. The micrographs were obtained by scanning electron microscopy and show morphology agglomerated of multiwalled CNTs, which permeated into the filter paper, forming a thickness of 67.33 μm. Moreover, indoor/outdoor tests were performed approaching the BP electrode from a heat source. Thus, the electrical responses in function of temperature variation show maximum thermovoltages of 9.0 mV and 40.73 mV from indoor and outdoor tests, respectively. Finally, an average Seebeck coefficient for the BP/copper electrodes array of 35.34 ± 6.0 mV/K was estimated from 298 to 304 K. These findings suggest that this assembly will be easily applied in thermoelectric device concepts.

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“…Plasmonic nanostructures are ideal candidates for such an energy conversion task20212223242526. They enable effective light absorption, with absorber thicknesses in the sub-wavelength regime, 1–2 orders of magnitude thinner than conventional broadband absorber coatings2728293031.…”

mentioning

confidence: 99%

“…Also, new materials such as graphene36 and carbon nanotubes37 have been exploited as tunable, ultra-low thermal capacity absorbers. On the other hand, much less attention has been devoted to the realization of thermoelectric-based visible/near-infrared light detectors, the reported response times being of the order of several seconds for light intensities of approximately 10 −4 kW/cm 2 (solar irradiation)222538. Similarly, commercially-available TE-based light sensors measuring visible/NIR radiation with intensities of the order of few kW/cm 2 still exhibit response times of the order of 1 second or greater3940 due to the large heat capacity of the overall system.…”

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confidence: 99%

A Rapid Response Thin-Film Plasmonic-Thermoelectric Light Detector

Pan

Tagliabue

Eghlidi

et al. 2016

Sci Rep

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Light detection and quantification is fundamental to the functioning of a broad palette of technologies. While expensive avalanche photodiodes and superconducting bolometers are examples of detectors achieving single-photon sensitivity and time resolutions down to the picosecond range, thermoelectric-based photodetectors are much more affordable alternatives that can be used to measure substantially higher levels of light power (few kW/cm2). However, in thermoelectric detectors, achieving broadband or wavelength-selective performance with high sensitivity and good temporal resolution requires careful design of the absorbing element. Here, combining the high absorptivity and low heat capacity of a nanoengineered plasmonic thin-film absorber with the robustness and linear response of a thermoelectric sensor, we present a hybrid detector for visible and near-infrared light achieving response times of the order of 100 milliseconds, almost four times shorter than the same thermoelectric device covered with a conventional absorber. Furthermore, we show an almost two times higher light-to-electricity efficiency upon replacing the conventional absorber with a plasmonic absorber. With these improvements, which are direct results of the efficiency and ultra-small thickness of the plasmonic absorber, this hybrid detector constitutes an ideal component for various medium-intensity light sensing applications requiring spectrally tailored absorption coatings with either broadband or narrowband characteristics.

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Plasmonic photo-thermoelectric energy converter with black-Si absorber

Cited by 38 publications

References 26 publications

Anti-reflective surfaces: Cascading nano/microstructuring

Anti-reflective surfaces: Cascading nano/microstructuring

Thermoelectric Effect of Buckypaper/Copper Assembly

A Rapid Response Thin-Film Plasmonic-Thermoelectric Light Detector

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