Thin-film silicon solar cell development on imprint-textured glass substrates

Paetzold, Ulrich W.; Zhang, Wendi; Prömpers, Michael; Kirchhoff, J.; Merdzhanova, Tsvetelina; Michard, S.; Carius, R.; Gordijn, A.; Meier, Matthias

doi:10.1016/j.mseb.2013.01.005

Cited by 27 publications

(16 citation statements)

References 20 publications

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“…The random texture on the PET substrate is obtained by replicating a texture of high temperature magnetron sputtered and wet chemically etched ZnO:Al with optimized light scattering morphology [16]. This texture has shown excellent light management properties in former studies on non-flexible glass substrates.…”

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confidence: 99%

Nanoimprint texturing of transparent flexible substrates for improved light management in thin‐film solar cells

Wilken

Paetzold

Meier

et al. 2015

Physica Rapid Research Ltrs

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We present a nanoimprint based approach to achieve efficient light management for solar cells on low temperature transparent polymer films. These films are particularly low-priced, though sensitive to temperature, and therefore limiting the range of deposition temperatures of subsequent solar cell layers. By using nanoimprint technology, we successfully replicated optimized light trapping textures of etched high temperature ZnO:Al on a low temperature PET film without deterioration of optical properties of the substrate. The imprint-textured PET substrates show excellent light scattering properties and lead to significantly improved incoupling and trapping of light in the solar cell, resulting in a current density of 12.9 mA/cm(2), similar to that on a glass substrate. An overall efficiency of 6.9% was achieved for a flexible thin-film silicon solar cell on low cost PET substrate

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confidence: 99%

Nanoimprint texturing of transparent flexible substrates for improved light management in thin‐film solar cells

Wilken

Paetzold

Meier

et al. 2015

Physica Rapid Research Ltrs

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“…Even higher efficiencies could be projected if the sub-cell J sc was matched at 12.5 mA cm À 2 with a slightly thicker bottom cell. The other advantage of depositing a Ag layer at the top of the texture is that we can easily incorporate any type of texture via the potentially low-cost nanoimprinting process [46][47][48][49], permitting the deposition of thinner devices. For example, we could easily incorporate a nanoimprinted replica of plasma-etched LP-CVD ZnO or the honeycomb patterns on which Sai et al reported J sc above 26 mA cm À 2 for 1-mm-thick single-junction mc-Si:H cells [50].…”

Section: Discussionmentioning

confidence: 99%

New progress in the fabrication of n–i–p micromorph solar cells for opaque substrates

Biron

Hänni

Boccard

et al. 2013

Solar Energy Materials and Solar Cells

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a b s t r a c tIn this paper, we investigate tandem amorphous/microcrystalline silicon solar cells with asymmetric intermediate reflectors grown in the n-i-p substrate configuration. We compare different types of substrates with respect to their light-trapping properties as well as their influence on the growth of single-junction microcrystalline cells. Our most promising back reflector combines a textured zinc oxide film grown by low-pressure chemical vapor deposition, a silver film for reflection, and a zinc oxide buffer layer. Grown on this substrate, microcrystalline cells exhibit excellent response in the infrared while keeping high open-circuit voltage and fill factor, leading to efficiencies of up to 10.0%. After optimizing the morphology of the asymmetric intermediate reflector, we achieve an n-i-p micromorph solar cell stabilized efficiency of 11.6%, using 270 nm and 1.7 mm of silicon for the absorber layer of the amorphous top cell and the microcrystalline bottom cell, respectively. Using this original device architecture, we reach efficiencies close to those of state-of-the-art n-i-p and p-i-n micromorph devices, demonstrating a promising route to deposit high-efficiency thin-film silicon solar cells on opaque substrates.

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“…A polymer mold was used to transfer the nanopattern onto a glass superstrate. Details on the nanoimprint processes are described in 5,6 . On top of these electrodes a 25 nm thick PEDOT:PSS layer is spin coated as hole transport layer.…”

Section: Organic Solar Cellmentioning

confidence: 99%

Progress on nanopatterned front electrodes for organic solar cells

Paetzold

Smeets

Hadipour

et al. 2014

Light, Energy and the Environment

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We present our recent progress in the development of nanopatterned front electrodes for improved light management in organic solar cell. First, experimental results of a prototype nanophotonic solar cell which demonstrates improved conversion efficiency compared to a planar device are presented. Second, three-dimensional simulations are employed to explain in-depth the light management effect in these devices.

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Thin-film silicon solar cell development on imprint-textured glass substrates

Cited by 27 publications

References 20 publications

Nanoimprint texturing of transparent flexible substrates for improved light management in thin‐film solar cells

Nanoimprint texturing of transparent flexible substrates for improved light management in thin‐film solar cells

New progress in the fabrication of n–i–p micromorph solar cells for opaque substrates

Progress on nanopatterned front electrodes for organic solar cells

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