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Journal of Nanomaterials
Volume 2006, Article ID 91635, 10 pages

Porous and Nanoporous Semiconductors and Emerging Applications

Chair for General Materials Science, Faculty of Engineering, Christian-Albrechts-University of Kiel, Kiel 24143, Germany

Received 15 March 2006; Revised 14 September 2006; Accepted 3 October 2006

Copyright © 2006 Helmut Föll et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Pores in single-crystalline semiconductors can be produced in a wide range of geometries and morphologies, including the “nanometer” regime. Porous semiconductors may have properties completely different from the bulk, and metamaterials with, for example, optical properties not encountered in natural materials are emerging. Possible applications of porous semiconductors include various novel sensors, but also more “exotic” uses as, for example, high explosives or electrodes for micro-fuel cells. The paper briefly reviews pore formation (including more applied aspects of large area etching), properties of porous semiconductors, and emerging applications.