Gehrig, D. W., Howard, I. A., & Laquai, F. (2015). Charge Carrier Generation Followed by Triplet State Formation, Annihilation, and Carrier Recreation in PBDTTT-C/PC60BM Photovoltaic Blends. The Journal of Physical Chemistry C, 119(24), 13509-13515. doi:10.1021/acs.jpcc.5b03467.