Supporting Information Charge-Transfer Dynamics in the Lowest Excited State of a Pentacene-Fullerene Complex: Implications for Organic Solar Cells Saju Joseph, 1,‡,# Mahesh Kumar Ravva, 1,# and Jean-Luc Bredas * ,1,2 1 KAUST Solar Center, Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900, Kingdom of Saudi Arabia 2 School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics Georgia Institute of Technology Atlanta, Georgia 30332-0400 # These authors contributed equally. ‡ Current address: International and Interuniversity Centre for Nanoscience and Nanotechnology (IIUCNN), Mahatma Gandhi University, Kottayam, Kerala 686560, India *Corresponding author: jean-luc.bredas@chemistry.gatech.edu