High Seebeck coefficient from isolated oligo-phenyl arrays on single layered graphene via stepwise assembly

Abstract

Organic thin films composed of highly ordered molecular arrays have great potential for thermoelectric energy harvesting. Molecular arrays bound to graphene substrates via non-covalent interactions have shown better thermoelectric behavior...

Tailoring quantum transport efficiency in molecular junctions via doping of graphene electrodes

“…5,6,41,52 Consequently, this molecular junction design with graphene doping could exhibit favorable thermoelectric properties, given that the thermoelectric power factor is proportional to S 2 and G. [53][54][55] In the case of C 6 NH 2 -doped systems, the conductance shift in both SAM 1 and SAM 2 was less significant compared to those doped with PBase. Despite this, C 6 NH 2 's large HOMO-LUMO gap and its propensity to form high-quality densely packed monolayers on graphene 11,56 indicate its potential application as a dielectric layer for controlling the Fermi level.…”

“…53–55 In the case of C 6 NH 2 -doped systems, the conductance shift in both SAM 1 and SAM 2 was less significant compared to those doped with PBase. Despite this, C 6 NH 2 's large HOMO–LUMO gap and its propensity to form high-quality densely packed monolayers on graphene 11,56 indicate its potential application as a dielectric layer for controlling the Fermi level.…”

Tuning quantum interference through molecular junctions formed from cross-linked OPE-3 dimers

“…[1][2][3] To realize this target, various strategies have been developed to measure the conductance, current-voltage characteristics, inelastic electron tunneling spectra, transition voltage spectra (TVS), and current-induced local heating of single molecules located between two electrodes. [4][5][6][7] Theories of electron transport in singlemolecule junctions are built on the concept that electrons passing through a molecule from a source electrode to a drain electrode are phase coherent and that the energy E of the electron does not change during the passage. [8][9][10] Consequently, if the source-drain voltage is small, the electrical conductance G of the molecular junction is given by the Landauer formula G = G 0 T(E F ), where G 0 is the quantum of conductance and T(E F ) is the transmission coefficient, evaluated at the Fermi energy E F of the electrodes.…”

Three distinct conductance states in polycyclic aromatic hydrocarbon derivatives

“…As an illustration, π-stacks of single molecules have been structured by employing guest aromatic molecules into host aromatic cages [23] or by covalently linking aromatics using strained paracyclophane backbones [13]. Nonetheless, a full control over the stacking distribution in the π-stacks has not been achieved because of the random molecular orientation [17][18][19][23][24][25]. The same work [16] of the π-stacks demonstrated that the molecular orientation of the π-stacks was not controlled on a gold surface.…”