Transport properties of copper phthalocyanine based organic electronic devices C. Schuster, M. Kraus, A. Opitz, W. Brütting and U. Eckern Eur. Phys. J. Special Topics, 180 (2009) 117-134 Published online: 11 June 2010 DOI: 10.1140/epjst/e2010-01214-3