We use 2D electronic photon-echo spectroscopy to study ultrafast singlet exciton fission in pentacene. Our observations and analysis of vibronic coherences provide insight to the role played by dark multiexcitonic states in mediating fission.

Ultrafast Spectroscopy

Rao, A., Bakulin, A., Egorova, D., Chin, A., Zigmantas, D., & Morgan, S. (2014). Vibrational Coherence Reveals the Role of Dark Multiexciton States in Ultrafast Singlet Exciton Fission. In 19th International Conference on Ultrafast Phenomena : held in Okinawa/ Japan, July 7-11, 2014. doi:10.1364/UP.2014.11.Fri.A.4