Seminar Prof. JaeHong Park [Ehwa Womans University] - Exciton and Charge-Carrier Dynamics Through Pump-Probe Spectroscopy
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Date: Thursday, September 26th, 2024, 5 p.m.
Venue: Science Hall B130
Abstract: For semiconductors in molecular optronics, photoinduced dynamics of excitons and free-carriers (electrons and holes) such as exciton-dissociation and carrier-recombination dynamics is the key process of the device operation. To probe this dynamics, various spectroscopic and electrical techniques have been utilized. In this presentation, first, I will introduce flash-photolysis time-resolved microwave conductivity (fp-TRMC) experiments, which are visible-pump/microwave-probe spectroscopic measurements and specialized in examining the dynamics of free-carriers. Exemplary free-carrier dynamics in various organic and inorganic systems studied by fp-TRMC will be discussed. Secondly, my presentation will discuss the exciton/carrier dynamics studies in organic semiconductors.