Interface dipoles of Ir(ppy)3 on Cu(111)

Tutkimustuotos: Lehtiartikkeli

Tutkijat

  • Fabian Queck
  • Florian Albrecht
  • Pingo Mutombo
  • Ondrej Krejci

  • Pavel Jelínek
  • Alastair McLean
  • Jascha Repp

Organisaatiot

  • University of Regensburg
  • Czech Academy of Sciences
  • Palacký University Olomouc
  • Queen's University Kingston

Kuvaus

The interplay of adsorption geometry and interface dipoles of the transition-metal complex Ir(ppy)3 on Cu(111) was studied using low-temperature scanning probe microscopy and density-functional-theory calculations. We find that the orientation of the molecule's intrinsic dipole moment with respect to the surface has a strong influence on the total energy of the different configurations, where the most stable one has the molecular dipole moment pointing out of the surface plane along the surface normal. Adsorption-induced redistribution of charges results in an additional dipole moment that also points out of the surface plane for all configurations. Submolecularly resolved maps of the resulting local contact potential difference suggest that any in-plane dipole moment is very effectively screened.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut12695-12703
Sivumäärä9
JulkaisuNanoscale
Vuosikerta11
Numero26
TilaJulkaistu - 14 heinäkuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 35441030