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Medientyp: E-Artikel Titel: Direct growth of periodic silicon nanostructures on imprinted glass for photovoltaic and photonic applications Beteiligte: Becker, Christiane; Preidel, Veit; Sontheimer, Tobias; Klimm, Carola; Rudigier‐Voigt, Eveline; Bockmeyer, Matthias; Rech, Bernd Erschienen: Wiley, 2012 Erschienen in: physica status solidi c Sprache: Englisch DOI: 10.1002/pssc.201200158 ISSN: 1862-6351; 1610-1642 Schlagwörter: Condensed Matter Physics Entstehung: Anmerkungen: Beschreibung: <jats:title>Abstract</jats:title><jats:p>Large‐area (50 cm<jats:sup>2</jats:sup>) two‐dimensionally periodic crystalline silicon structures with lattice constants between 350 nm and 2 µm were prepared by high‐rate electron‐beam evaporation of silicon on nanoimprinted glass substrates. All processing steps have little technological intricacy, are up‐scalable to large areas, and thus hold the potential for low‐cost production of advanced nanostructured photovoltaic devices or large‐area 2D photonic crystals. The 2 µm‐periodic materials exhibit a promising absorption enhancement with light path enhancement factors larger 40 at λ=1000 nm enabling the development of highly effective light trapping architectures for polycrystalline silicon thin‐film solar cells. Photonic band structure effects at near infrared wavelengths could be identified by angular resolved reflection measurements in hexagonal 350nm‐periodically patterned silicon films inspiring the formation of large‐area two‐dimensional photonic crystals for telecommunication wavelengths. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</jats:p>