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Proceedings Paper

Angle selective light management in photovoltaics using self-assembled anodized aluminum oxide nanopatterns
Author(s): Brian Roberts; P.-C. Ku
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Paper Abstract

Semitransparent photovoltaics are of interest for building integration and window coatings, though demonstrate an intrinsic tradeoff between transparency and absorption / efficiency. We propose alleviating this tradeoff using light management nanostructures which selectively scatter light based on incident wavelength and angle, allowing transmission of normally incident light for window visibility and absorption of light at elevated angles. Two structures of interest are proposed and described: metal nanorods which scatter light via their localized surface plasmon resonance properties, and arrays of subwavelength nanopores in a dielectric which demonstrate coherent multiple scattering. Both structures can potentially be patterned over large areas by electrochemical oxidation of aluminum into self assembled nanoporous anodized aluminum oxide (AAO) films.

Paper Details

Date Published: 16 March 2015
PDF: 7 pages
Proc. SPIE 9358, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IV, 935809 (16 March 2015); doi: 10.1117/12.2079541
Show Author Affiliations
Brian Roberts, Univ. of Michigan (United States)
P.-C. Ku, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 9358:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IV
Alexandre Freundlich; Jean-François Guillemoles; Masakazu Sugiyama, Editor(s)

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