Highly efficient charge transport at molecule-electrode interfaces

Scientific Achievement

Our results show that resonant transport offers a highly efficient intramolecular charge transport mechanism that will enable long-range transport in electronic devices. We further develop a general quantitative relation to describe the non-resonant to resonant transition voltage VT as a function of molecular properties.

Significance and Impact

This work highlights the importance of frontier orbital energy alignment in achieving efficient charge transport in molecular systems. Our work holds the potential to aid in the design of new chemistries enabling highly efficient charge transport at electrode interfaces in organic or redox-active energy storage systems.

Research Details

  • Transient bias-switching experiments show that the non-resonant to resonant transition is reversible as a function of the applied bias.
  • Our results show that the transition voltage VT decreases with increasing HOMO energy levels (EHOMO), following general a linear relationship.

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DOI: 10.1021/acs.nanolett.1c02915

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