Molecularly Controlled Stark Effect Induces Significant Rectification in Polycyclic-Aromatic-Hydrocarbon-Terminated n-Alkanethiolates.

摘要: The variation of the electronic structure individual molecules as a function applied bias matters for performance molecular and organic devices. Understanding structure–electric-field relationship, however, remains challenge because lack in-operando spectroscopic technique complexity arising from ill-defined on-surface organic–electrode interfaces within We report that reliable reproducible diode can be achieved by control conjugation length in polycyclic-aromatic-hydrocarbon (PAH)-terminated n-alkanethiolate (denoted SC11PAH), incorporated into liquid-metal-based large-area tunnel junctions form self-assembled monolayer. By taking advantage structural simplicity tunability SC11PAH high-yielding feature junction technique, we demonstrate increase PAH terminal group leads to significant rectification ratio up t...