Photonic crystal electrode to be used in organic LED structures L. Petti, M. Rippa, R. Capasso, G. Nenna, A. De Girolamo Del Mauro, V. La Ferrara, A. Pacheri Madathil and C. Minarini J. Eur. Opt. Soc.-Rapid Publ., 8 (2013) 13002 Published online: 31 January 2013 DOI: 10.2971/jeos.2013.13002