Morphology and photochemical stability of P3HT:PCBM active layers of organic solar cells A. Dupuis, A. Tournebize, P.-O. Bussière, A. Rivaton and J.-L. Gardette Eur. Phys. J. Appl. Phys., 56 3 (2011) 34104 Published online: 23 November 2011 DOI: 10.1051/epjap/2011110132