Photophysical study of P3HT/NDI based hybrid nanoparticles Soumitra Satapathi, Mijanur Rahaman Molla, Santanu Bhattacharyya, Suhrit Ghosh and Amitava Patra Eur. Phys. J. D, 68 11 (2014) 350 Published online: 21 November 2014 DOI: 10.1140/epjd/e2014-50328-7