Interaction of Light with Si Nanowire Films

Tsakalakos, Loucas; Balch, Joleyn; Fronheiser, Jody; Shih, Min-Yi; LeBoeuf, S. F.; Pietrzykowski, Matthew; Codella, P. J.; Sulima, O.V.; Rand, James A.; Kumar, Avaneesh; Korevaar, B.A.

doi:10.1109/wcpec.2006.279376

Cited by 40 publications

(59 citation statements)

References 16 publications

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“…1c, d) even though PDMS is transparent to visible light and the top-down density of Si wires was less than 6.5% of the projected area of the film. This finding is in agreement with the reported enhanced light absorption in wire arrays [22,23] and suggests that these composite films may have direct application in solar energy conversion devices.…”

supporting

confidence: 91%

Flexible Polymer‐Embedded Si Wire Arrays

et al. 2009

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Arrays of Si rods are embedded in PDMS and removed from the rigid growth substrate, resulting in a composite material that merges the benefits of single‐crystalline silicon with the flexibility of a polymer. With this technique, solar cell absorber materials with the potential to achieve high efficiency can be prepared by high‐temperature processing and transformed into a flexible, processable form.

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supporting

confidence: 91%

Flexible Polymer‐Embedded Si Wire Arrays

et al. 2009

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“…Nanostructured silicon wires have been reported to exhibit a light trapping effect, 36 which can enhance 45 the current level for hydrogen production when the length of the Si nanowires is optimized to exhibit strong broadband optical absorption. 37 The nanowire structure also has the advantage of inducing the orthogonalization of light absorption and chargecarrier collection. 33 Thus, the minority carriers generated by 50 incident solar light can move to the lateral side of each nanowire and participate in the hydrogen evolution reaction more quickly than in the planar structure.…”

Section: Resultsmentioning

confidence: 99%

N-doped graphene quantum sheets on silicon nanowire photocathodes for hydrogen production

Sim

Moon

et al. 2015

Energy Environ. Sci.

140

105

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Photoelectrochemical hydrogen production from solar energy has been attracting much attention in the field of renewable energy technology. The realization of cost-effective hydrogen production by water splitting requires electrolysis or photoelectrochemical cells decorated with highly efficient co-catalysts. A critical requirement for catalysts in the photoelectrochemical cells is not only the ability to boost the 10 kinetics of a chemical reaction but also to exhibit durability against electrochemical and photoinduced degradation. In the race to replace previous noble-metal catalysts, the design of carbon-based catalysts represents an important research direction in the search for non-precious, environmentally benign, and corrosion-resistant catalysts. Herein, we suggest graphene quantum sheets as a catalyst for the solardriven hydrogen evolution reaction on Si nanowire photocathodes. The optimum nanostructures for the Si 15 photocathodes exhibit an enhanced photocurrent and a lower overpotential compared to those of a planar Si surface. This significant enhancement demonstrates how graphene quantum sheet catalysts can be used to produce Si nanowire photocathodes as hydrogen evolution reaction catalysts with high activity.

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“…[32][33][34][35][36][37], gallium arsenide nanowires in Ref. [38], indium arsenide nanowires in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…[64][65][66]. Furthermore, some authors introduce artificial periodicity with a unit cell containing from a few up to hundreds of nanowires, implicitly assuming that this measure does not introduce any spurious effect [34,67]. In the following sections, we shall focus on devices either featuring long-range periodicity or small extensions in terms of wavelength.…”

Section: Introductionmentioning

confidence: 99%

Computational electromagnetics for nanowire solar cells

Kupec

Witzigmann

2012

J Comput Electron

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This review article provides an overview of various novel nanowire array solar cells and highlights the aspects of electromagnetic simulations that are a valuable tool for understanding the optical processes leading to their distinct properties. As the computational methods commonly used for the task are well established, we focus on the question how numerical modeling can be used to assess the performance of a design and reveal the working principle of the devices. We conclude that scientific literature identifies numerical simulations as paramount for design and interpretation of experimental data.

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Interaction of Light with Si Nanowire Films

Cited by 40 publications

References 16 publications

Flexible Polymer‐Embedded Si Wire Arrays

Flexible Polymer‐Embedded Si Wire Arrays

N-doped graphene quantum sheets on silicon nanowire photocathodes for hydrogen production

Computational electromagnetics for nanowire solar cells

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