Conference PaperEngineering ultrafast photoconductive response in two-dimensional SnS2 through metal intercalationKhanmohammadi, Sepideh; Williams, Camille; Kushnir_Friedman, Kateryna; Grimm, Ronald L; Koski, Kristie; Titova, Lyubov VBetz, Markus; Elezzabi, Abdulhakem YSnS2 is a two-dimensional (2D) layered semiconductor with a visible-range bandgap (~2.3eV), high charge carrier mobility, long carrier lifetimes, and good environmental stability. This study explores the impact of zero-valent metal intercalation into the van der Waals gaps of SnS2 on charge carrier dynamics. We demonstrate that metal intercalation enhances optical absorption in the yellow-to-IR range and induces metal-dependent bandgap shifts. Time-resolved THz spectroscopy reveals that different metals uniquely influence photoconductivity dynamics: We find that intercalation with Bi, Ni, and Fe shortens the photoconductivity decay times, whereas Rh intercalation results in a slower decay. These findings highlight the potential of metal intercalation to tailor SnS2 properties for diverse applications, from solar energy conversion to high-speed photodetectors.SPIE2025-03-191062086239781510684768https://doi.org/10.1117/12.30435912021871; 1750944San Francisco, United StatesNational Science Foundation