Ultrafast IR Spectroscopy: a Real-Time Observation of Charge, Energy, and Structural Dynamics in Soft Optoelectronic Systems’
Abstract: The ‘soft’ character of organic and hybrid semiconducting materials leads to a strong coupling between their rich structural dynamics and optoelectronic properties. Vibrational and low-energy electronic optical transition thus provide a unique, fast and sensitive, probe for observing the photophysics of such systems. In my talk, I will present a number of ultrafast IR spectroscopy methods we are developing and show how these methods can be applied to evaluate different aspects of soft semiconductors’ performance – from local structural and electronic excited-state dynamics to their effect on the overall device efficiency.