SKKU Team Publishes Review on Charge‑Carrier Dynamics in Organic Solar Cells

A research group from Sungkyunkwan University (SKKU) has published a comprehensive review on the ultrafast carrier dynamics of nonfullerene acceptor organic photovoltaics. Led by Professors Taeyeon Kim and Doo‑Hyun Ko of the Department of Chemistry, the study appears in the journal *ACS Nano* under the title “Carrier Dynamics in Nonfullerene Acceptor Organic Photovoltaics through Ultrafast Spectroscopy.” The paper synthesizes recent experimental findings that use time‑resolved spectroscopic techniques to probe how charge carriers are generated, separated, and recombine in next‑generation solar‑cell materials that replace traditional fullerene acceptors.

The review highlights the critical role of ultrafast spectroscopy in revealing the microscopic processes that govern efficiency in nonfullerene organic solar cells. By collating data from pump–probe, transient absorption, and two‑dimensional spectroscopy studies, the authors map out the timescales of exciton dissociation, charge transfer, and recombination. They also discuss how molecular design, interfacial engineering, and morphological control influence these dynamics, offering insights that could guide the development of higher‑performance, more stable organic photovoltaic devices.

Overall, the publication provides a valuable resource for researchers working on organic photovoltaics, summarizing current knowledge and outlining future directions for improving device performance through a deeper understanding of carrier dynamics.