Relationship between Interchain Interaction, Exciton Delocalization, and Charge Separation in Low-Bandgap Copolymer Blends

• Published in: Journal of the American Chemical Society Vol. 136; no. 28; pp. 10024 - 10032
• Main Authors: Guo, Zhi, Lee, Doyun, Schaller, Richard D, Zuo, Xiaobing, Lee, Byeongdu, Luo, TengFei, Gao, Haifeng, Huang, Libai
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 16.07.2014
• Subjects: composite polymers; crystal structure; energy; photovoltaic cells; spectroscopy

We present a systematic study of the roles of crystallinity, interchain interaction, and exciton delocalization on ultrafast charge separation pathways in donor–acceptor copoloymer blends. We characterize the energy levels, excited state structures, and dynamics of the interchain species by combined...