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Proceedings Paper

Nanoscale concave structures for field enhancement in organic thin films
Author(s): Arkadiusz Jarosław Goszczak; Jost Adam; Paweł Piotr Cielecki; Jacek Fiutowski; Horst-Günter Rubahn; Morten Madsen
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Paper Abstract

A promising method for improving light-absorption in thin-film devices is demonstrated via electrode structuring using Anodic Alumina Oxide (AAO) templates. We present nano-scale concave Al structures of controlled dimensions, formed after anodic oxidation of evaporated high purity aluminum (Al) films and alumina etching. We investigate both experimentally and theoretically the field-enhancement supported by these concave nanostructures as a function of their dimensions. For the experimental investigations, a thin layer of organic polymer coating allows the application of a nondestructive laser ablation technique that reveals field-enhancement at the ridges of the Al nanostructures. The experimental results are complemented by finite-difference time-domain (FDTD) simulations, to support and explain the outcome of the laser ablation experiments. Our method is easily up-scalable and lithography-free and allows one to generate nanostructured electrodes that potentially support field-enhancement in organic thin-film devices, e.g., for the use in future energy harvesting applications.

Paper Details

Date Published: 28 August 2015
PDF: 11 pages
Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 95473I (28 August 2015); doi: 10.1117/12.2189484
Show Author Affiliations
Arkadiusz Jarosław Goszczak, Univ. of Southern Denmark (Denmark)
Jost Adam, Univ. of Southern Denmark (Denmark)
Paweł Piotr Cielecki, Univ. of Southern Denmark (Denmark)
Jacek Fiutowski, Univ. of Southern Denmark (Denmark)
Horst-Günter Rubahn, Univ. of Southern Denmark (Denmark)
Morten Madsen, Univ. of Southern Denmark (Denmark)

Published in SPIE Proceedings Vol. 9547:
Plasmonics: Metallic Nanostructures and Their Optical Properties XIII
Allan D. Boardman; Din Ping Tsai, Editor(s)

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