Tsoi, W C; Spencer, S J; Yang, L; Ballantyne, A M*; Nicholson, P G; Turnbull, A; Shard, A G; Murphy, C E; Bradley, D D C*; Nelson, J*; Kim, J S* (2011) Effect of crystallisation on the electronic energy levels and thin film morphology of P3HT:PCBM blends. Macromolecules, 44 (8). pp. 2944-2952.