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Proceedings Paper

Directly imprinted laser feedback structures in electroactive conjugated polymers using soft lithography
Author(s): Martin Gaal; Christoph Gadermaier; Harald Plank; Erik Moderegger; Alexander Pogantsch; Guenther Leising; Emil J.W. List
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Paper Abstract

A fundamental aim in organic electronics is an implementation of a polymeric laser diode. For this purpose, an essential step towards this goal is the understanding and fabrication of feedback structures for conjugated polymer lasers. In this work we will present the realization and characterization of a directly imprinted distributed feedback structure into a highly luminescent conjugated polymer, poly(2-methoxy-5(2-ethyl-hexyloxy)-1,4-phenylevevinylene, which was utilized as a model polymer for conjugated laser materials. The presented method permits to directly imprint a distributed feedback grating into the conjugated polymer. Such distributed feedback structures may be fabricated either in the substrate or in the active polymer layer itself. Therefore we chose two accomplished techniques from soft lithography, which has proven itself as a useful tool to pattern a wide variety of materials. By the combination of these two techniques, namely micrmolding in capillaries and liquid embossing, we created a novel technique. We called this new technique liquid imprinting. Under photo-excitation of a frequency doubled Nd:YAG laser, our corrugated distributed feedback structures showed lasing. Because of the inexpensiveness and repeatability, this approach is a very promising candidate for the mass production of conjugated polymer laser devices.

Paper Details

Date Published: 8 September 2004
PDF: 8 pages
Proc. SPIE 5464, Organic Optoelectronics and Photonics, (8 September 2004); doi: 10.1117/12.545868
Show Author Affiliations
Martin Gaal, Technische Univ. Graz (Austria)
Institute of Nanostructured Materials and Photonics (Austria)
Christoph Gadermaier, Technische Univ. Graz (Austria)
Institute of Nanostructured Materials and Photonics (Austria)
Harald Plank, Technische Univ. Graz (Austria)
Institute of Nanostructured Materials and Photonics (Austria)
Erik Moderegger, Austria Technologie und Systemtechnik AG (Austria)
Alexander Pogantsch, Technische Univ. Graz (Austria)
Guenther Leising, Austria Technologie und Systemtechnik AG (Austria)
Emil J.W. List, Technische Univ. Graz (Austria)
Institute of Nanostructured Materials and Photonics (Austria)

Published in SPIE Proceedings Vol. 5464:
Organic Optoelectronics and Photonics
Paul L. Heremans; Michele Muccini; Hans Hofstraat, Editor(s)

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