On the other hand, the experimental work of Zotti et al, 4,4-biscyanotolane (BCT), 4,4-bisthiotolane(BTT) and 4,4 bisnitrotolane (BNT) molecular junctions showed mild and low energy offset, ~0.45 eV to ~0.27 eV depending on the anchoring group (figurer 4d and I-V shown in supporting information S7). The results observed in this study has shown clearly different between three models particularly on BNT molecular junction while no substantial difference for BTT and BCT molecular junctions. The larger difference displayed on BNT molecular junction in Eq 3 can be highly related to low value of energy offset as shown in table 1. In the condition of low energy offset and high applied bias, the resonance effect emerges, which Eq 3 cannot account for (figure ). This behavior can significantly result to alter the value of extracted fitting parameters when performing numerical simulation as it violate the condition at which Eq 3 can be applied.