Characterization of antireflection moth-eye film on crystalline silicon photovoltaic module

Yamada, Noboru; Ijiro, Toshikazu; Okamoto, E.; Hayashi, Kentaro; Masuda, Hideki

doi:10.1364/oe.19.00a118

Cited by 73 publications

(36 citation statements)

References 14 publications

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“…Control of the anti-reflective properties of semiconductor surfaces, preferably based on the use of existing semiconductor processing techniques or self-assembly methods, is being vigorously pursued for use in solar cell applications, [1][2][3][4][5] where hierarchical structures in particular have demonstrated superior performance. 6,7 In addition, these surfaces are required for other uses, including displays, optical lenses, and defense applications, which would benefit from suppressed reflectance.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

Anti-reflective surfaces: Cascading nano/microstructuring

Nishijima¹,

Komatsu²,

Ota³

et al. 2016

APL Photonics

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“…Antireflective sub-wavelength structures (ARS) have been proved as an ideal approach to enhance the light transmittance over a broad spectral bandwidth [10][11][12][13]. Applying the ARS on SiC has been studied on the monochromatic LEDs with undoped SiC as substrate materials [14,15] and on the 4H-SiC photodiodes [16].…”

Section: Introductionmentioning

confidence: 99%

Broadband and omnidirectional light harvesting enhancement of fluorescent SiC

Ou¹,

Jokubavičius²,

Hens³

et al. 2012

Opt. Express

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Abstract:In the present work, antireflective sub-wavelength structures have been fabricated on fluorescent 6H-SiC to enhance the white light extraction efficiency by using the reactive-ion etching method. Broadband and omnidirectional antireflection characteristics show that 6H-SiC with antireflective sub-wavelength structures suppress the average surface reflection significantly from 20.5 % to 1.01 % over a wide spectral range of 390-784 nm. The luminescence intensity of the fluorescent 6H-SiC could be enhanced in the whole emission angle range. It maintains an enhancement larger than 91 % up to the incident angle of 70 degrees, while the largest enhancement of 115.4 % could be obtained at 16 degrees. The antireflective sub-wavelength structures on fluorescent 6H-SiC could also preserve the luminescence spectral profile at a large emission angle by eliminating the Fabry-Pérot microcavity interference effect.

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“…A fabricated coating textured with nanonipples was placed on top of a crystalline silicon photovoltaic module and characterized indoors and outdoors for performance [37]. Typically, the optical-to-electrical efficiency of the module improved by 5%, which may turn out be cost-effective if the coating production becomes inexpensive.…”

Section: Biomimeticsmentioning

confidence: 99%

Engineered biomimicry for harvesting solar energy: a bird's eye view

Martín-Palma

Lakhtakia

2013

International Journal of Smart and Nano Materials

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All three methodologies of engineered biomimicry -bioinspiration, biomimetics, and bioreplication -are represented in current research on harvesting solar energy. Both processes and porous surfaces inspired by plants and certain marine animals, respectively, are being investigated for solar cells. Whereas dye-sensitized solar cells deploy artificial photosynthesis, bioinspired nanostructuring of materials in solar cells improves performance. Biomimetically textured coatings for solar cells have been shown to reduce optical reflectance and increase optical absorptance over a broad spectral regime. Compound lenses fabricated by a bioreplication technique offer similar promise for reduced reflectance by increasing the angular field of view.

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Characterization of antireflection moth-eye film on crystalline silicon photovoltaic module

Cited by 73 publications

References 14 publications

Anti-reflective surfaces: Cascading nano/microstructuring

Anti-reflective surfaces: Cascading nano/microstructuring

Broadband and omnidirectional light harvesting enhancement of fluorescent SiC

Engineered biomimicry for harvesting solar energy: a bird's eye view

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