Absorbing one-dimensional planar photonic crystal for amorphous silicon solar cell

Daïf, Ounsi El; Drouard, Emmanuel; Gomard, Guillaume; Kaminski, A.; Fave, Alain; Lemiti, M.; Ahn, Seung-Ho; Kim, Sihan; Cabarrocas, Pere Roca i; Jeon, Heonsu; Seassal, Christian

doi:10.1364/oe.18.00a293

Cited by 77 publications

(42 citation statements)

References 20 publications

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“…More specifically, for applications to photovoltaics it has been shown that trapping light beyond the commonly accepted limit of Lambertian light scattering is possible through the use of periodic photonic nanostructures [7][8]. The optical properties of such structures have been widely studied theoretically [9][10][11][12][13] and their integration has been mainly tried in a-Si, micromorph and organic based cells [14][15][16].…”

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confidence: 99%

Photonic assisted light trapping integrated in ultrathin crystalline silicon solar cells by nanoimprint lithography

Trompoukis

Daïf

Depauw

et al. 2012

Applied Physics Letters

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We report on the fabrication of two-dimensional periodic photonic nanostructures by nanoimprint lithography and dry etching, and their integration into a 1-μm-thin monocrystalline silicon solar cell. Thanks to the periodic nanopatterning, a better in-coupling and trapping of light is achieved, resulting in an absorption enhancement. The proposed light trapping mechanism can be explained as the superposition of a graded index effect and of the diffraction of light inside the photoactive layer. The absorption enhancement is translated into a 23% increase in short-circuit current, as compared to the benchmark cell, resulting in an increase in energy-conversion efficiency.

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confidence: 99%

Photonic assisted light trapping integrated in ultrathin crystalline silicon solar cells by nanoimprint lithography

Trompoukis

Daïf

Depauw

et al. 2012

Applied Physics Letters

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“…The focusing of the trapped light in the solar cells increases the productivity and decreases the thickness of the solar cell. Thus, several light trapping concepts aim to increase the way the light travels and penetrates into the solar cell [9][10][11][12][13][14][15][16][17][18][19][20][21].…”

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confidence: 99%

Optical visible wavelength region selective reflector design for photovoltaic cells using photonic crystal

Korkmaz¹,

Çetin²

2017

Turk J Phys

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Abstract:In this study, we have proposed an optical broadband angular reflector having a band selective feature and high reflectivity rate for photovoltaic implementations by using a photonic crystal structure made of two different dielectric layers. This paper presents new and useful information about a reflector that was designed by using a periodic structure composed of two Si based layers for the visible range in the solar spectrum region. The system has been adjusted in such a way that it could cover a wide wavelength area between the photonic band gaps at nearly λ ≈ 300-800 nm. We have tested the proposed reflector against different angles of incidence of the light. The reflectivity spectra of the optical structure have been calculated.

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“…Nowadays, light scattering at textured interfaces is the most successfully used approach to enhance the J sc [2]; all recent certified efficiency records reported for thin-film silicon solar cells [3] were achieved on a textured surface. In the meantime, other more exotic approaches with high potential using elongated architectures [4][5][6][7][8], photonic crystals [9,10] or plasmonic effects [11][12][13] are under development.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of flat light-scattering substrates in thin-film silicon solar cells

Söderström

Bugnon

Haug

et al. 2012

Solar Energy Materials and Solar Cells

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a b s t r a c tIn this work, a novel type of substrate for thin-film silicon solar cells is studied. The substrate has the advantage of being physically flat to allow the growth of cells with excellent material quality while being optically rough for enhanced light trapping that leads to high short-circuit current density. The substrate is made of rough zinc oxide (ZnO) which is grown on a flat silver reflector. The ZnO is then covered with amorphous silicon and the stack is polished to expose the tips of the pyramidal ZnO surface. The ZnO embedded in the amorphous matrix provides the desirable scattering of light while the surface onto which the cell is deposited is flat and allows for the growth of good-quality material.We present results of $ 4 mm thick microcrystalline silicon solar cells prepared on such substrates with high open-circuit voltages of 520 mV. We also demonstrate a large relative efficiency gain of 10% compared to a state-of-the-art cell which is grown directly on an optimized textured substrate.

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Absorbing one-dimensional planar photonic crystal for amorphous silicon solar cell

Cited by 77 publications

References 20 publications

Photonic assisted light trapping integrated in ultrathin crystalline silicon solar cells by nanoimprint lithography

Photonic assisted light trapping integrated in ultrathin crystalline silicon solar cells by nanoimprint lithography

Optical visible wavelength region selective reflector design for photovoltaic cells using photonic crystal

Experimental study of flat light-scattering substrates in thin-film silicon solar cells

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