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2018
Conference Paper
Titel
High-Efficiency Diamond Wire-Sawn mc-Si-Based PERC Solar Cells Textured by Atmospheric Pressure Dry Etching
Abstract
In this paper, we present further results on the integration of a ""black-silicon"" texturing process on diamond-wire sawn multicrystalline silicon wafer, using atmospheric pressure dry texturing (ADE) in a passivated emitter and rear cell (PERC) solar cell architecture. Following on from our previous work on high-efficiency nanotextured solar cells, we present further optimization of our texturing process, resulting in the uniform formation of spherical caps-like surface morphology with low reflectivity and comparable reflection distribution to the wet-chemical acidic texture based on additives. First cell results show up to 19.8% conversion efficiency. Characterisation and analysis of the cells highlight current limitations and identify potential for improvement: optimization of the firing process and minimization the inherent bulk-related recombination losses in the mc-Si material, which is expected to lead to further gain in conversion efficiencies.
Author(s)
Tags
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Plasmatechnologie
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Photovoltaik
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Silicium-Photovoltaik
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Dotierung und Diffusion
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Oberflächen: Konditionierung
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Passivierung
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Lichteinfang
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Herstellung und Analyse von hocheffizienten Solarzellen
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Pilotherstellung von industrienahen Solarzellen
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Technologiebewertung
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Texturing
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silicon
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wire-sawing
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silicon wafer
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cell