Optical and EPR spectroscopy in pure and blended films of a novel low band gap polymer A. Aguirre, G. Janssen, E. Goovaerts, K. Colladet, D. Vanderzande and L. Lutsen Eur. Phys. J. Appl. Phys., 36 3 (2006) 285-287 Published online: 06 December 2006 DOI: 10.1051/epjap:2006143