Media type: E-Article Title: Analysis of absorption enhancement in tailor‐made periodic polycrystalline silicon microarrays Contributor: Preidel, Veit; Lockau, Daniel; Sontheimer, Tobias; Back, Franziska; Rudigier‐Voigt, Eveline; Rech, Bernd; Becker, Christiane imprint: Wiley, 2013 Published in: physica status solidi (RRL) – Rapid Research Letters, 7 (2013) 12, Seite 1045-1049 Language: English DOI: 10.1002/pssr.201308098 ISSN: 1862-6254; 1862-6270 Keywords: Condensed Matter Physics ; General Materials Science Origination: Footnote: Description: <jats:title>Abstract</jats:title><jats:p>We present a design study of 3D photonic poly‐Si microarchitectures on 2 µm periodically textured glass substrates for application as absorber layers in crystalline Si thin‐film solar cells. Different arrays of microholes and microcones were fabricated in a low‐cost process, by combining high rate electron beam evaporation, nanoimprint technology and self‐organized solid phase crystallization. Two promising designs exhibiting strong absorption enhancement were identified by optical analysis. High angular acceptance and calculated maximum achievable short‐circuit current density of 27.6 mA/cm<jats:sup>2</jats:sup> for an effective Si thickness of 1.1 µm highlight the optical potential of these microarchitectures as broadband absorbers in polycrystalline Si thin‐film solar cells.</jats:p><jats:p><jats:boxed-text content-type="graphic" position="anchor"><jats:graphic xmlns:xlink="http://www.w3.org/1999/xlink" mimetype="image/gif" position="anchor" specific-use="enlarged-web-image" xlink:href="graphic/mrrl0809805.gif"><jats:alt-text>magnified image</jats:alt-text></jats:graphic></jats:boxed-text></jats:p><jats:p>Tailor‐made 2 µm periodic polycrystalline silicon micro‐arrays on nanoimprint patterned glass substrates for an application as light harvesting architectures in polycrystalline Si thin‐film solar cells.</jats:p><jats:p>(© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</jats:p>