Femtosecond stimulated Raman spectro-microscopy for probing chemical reaction dynamics in solid-state materials

Alyssa A. Cassabaum, Kajari Bera, Christopher C. Rich, Bailey R. Nebgen, Siu Yi Kwang, Margaret L. Clapham, Renee R. Frontiera

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Femtosecond stimulated Raman spectroscopy (FSRS) is a chemically specific vibrational technique that has the ability to follow structural dynamics during photoinduced processes such as charge transfer on the ultrafast timescale. FSRS has a strong background in following structural dynamics and elucidating chemical mechanisms; however, its use with solid-state materials has been limited. As photovoltaic and electronic devices rely on solid-state materials, having the ability to track the evolving dynamics during their charge transfer and transport processes is crucial. Following the structural dynamics in these solid-state materials will lead to the identification of specific chemical structures responsible for various photoinduced charge transfer reactions, leading to a greater understanding of the structure-function relationships needed to improve upon current technologies. Isolating the specific nuclear motions and molecular structures that drive a desired physical process will provide a chemical blueprint, leading to the rational design and fabrication of efficient electronic and photovoltaic devices. In this perspective, we discuss technical challenges and experimental developments that have facilitated the use of FSRS with solid-state samples, explore previous studies that have identified structure-function relationships in charge transfer reactions, and analyze the future developments that will broaden and advance the field.

Original languageEnglish (US)
Article number030901
JournalJournal of Chemical Physics
Issue number3
StatePublished - Jul 21 2020

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation (Grant No. CHE-1552849; K.B. and A.A.C.) and the Department of Energy (Grant No. DE-SC0018203; C.C.R., S.Y.K., and M.L.C.). K.B. acknowledges funding from a University of Minnesota Doctoral Dissertation Fellowship.

Publisher Copyright:
© 2020 Author(s).


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