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Article Dans Une Revue Nano Letters Année : 2021

Unprecedented ON/OFF Ratios in Photoactive Diarylethene-Bisthienylbenzene Molecular Junctions

Résumé

Photoactive molecular junctions, based on 4 nm thick diarylethene (DAE) and 5 nm thick bisthienylbenzene (BTB) layers, were fabricated by electrochemical deposition. Total thickness was around 9 nm, that is, above the direct tunneling limit and in the hopping regime. The DAE units were switched between their open and closed forms. The DAE/BTB bilayer structure exhibits new electronic functions combining photoswitching and photorectification. The open form of DAE/BTB shows low conductance and asymmetric I–V curves while the closed form shows symmetric I–V curves and high conductance. More importantly, unprecedented ON/OFF current ratios of over 10 000 at 1 V were reproducibly measured.
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Dates et versions

hal-03420993 , version 1 (09-11-2021)

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Imen Hnid, Mingyang Liu, Denis Frath, Sebastien Bellynck, Frederic Lafolet, et al.. Unprecedented ON/OFF Ratios in Photoactive Diarylethene-Bisthienylbenzene Molecular Junctions. Nano Letters, 2021, 21 (18), pp.7555-7560. ⟨10.1021/acs.nanolett.1c01983⟩. ⟨hal-03420993⟩
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