Unprecedented ON/OFF Ratios in Photoactive Diarylethene-Bisthienylbenzene Molecular Junctions.
basic_science · Level V
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- Record sourced from PubMed, PMID 34478314.
- Also identified by DOI 10.1021/acs.nanolett.1c01983.
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Abstract
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>I</i>-<i>V</i> curves while the closed form shows symmetric <i>I</i>-<i>V</i> curves and high conductance. More importantly, unprecedented ON/OFF current ratios of over 10 000 at 1 V were reproducibly measured.
Medical subject headings
- Electronics