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- W3184133031 abstract "Tin iodide phosphide (SnIP), an inorganic double-helix material, is a quasi-1D van der Waals semiconductor that shows promise in photocatalysis and flexible electronics. However, our understanding of the fundamental photophysics and charge transport dynamics of this new material is limited. Here, we use time-resolved terahertz (THz) spectroscopy to probe the transient photoconductivity of SnIP nanowire films and, with insight into the highly anisotropic electronic structure from quantum chemical calculations, measure an electron mobility as high as 280 $cm^2V^{-1}s^{-1}$. Additionally, the THz vibrational spectrum reveals a photoexcitation-induced charge redistribution that reduces the amplitude of a twisting mode of the outer SnI helix on picosecond timescales. Finally, we show that the carrier lifetime and mobility are limited by a trap density greater than $10^{18},cm^{-3}$. Our results provide insight into the optical excitation and relaxation pathways of SnIP and demonstrate a remarkably high carrier mobility for such a soft and flexible material." @default.
- W3184133031 created "2021-08-02" @default.
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- W3184133031 date "2021-07-19" @default.
- W3184133031 modified "2023-10-14" @default.
- W3184133031 title "Ultrafast Photoconductivity and Terahertz Vibrational Dynamics in Double‐Helix SnIP Nanowires" @default.
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- W3184133031 doi "https://doi.org/10.1002/adma.202100978" @default.
- W3184133031 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34278600" @default.
- W3184133031 hasPublicationYear "2021" @default.
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