Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 119, Issue 16, Pages 8755-8762Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b01485
Keywords
-
Funding
- German Research Council [PE 546/5-1, CH 132/23-1]
- Helmholtz Zentrum Berlin GmbH
Ask authors/readers for more resources
Interface properties of VOPc films on Ni(111) and graphene/Ni(111) were investigated by X-ray photoemission spectroscopy (XPS), ultraviolet photoemission spectroscopy (UPS), and X-ray absorption spectroscopy (XAS). The XAS spectra reveal that the molecules grow highly ordered on both substrates, flat lying on the substrate surface. On Ni(111), strong interactions between vanadium ions of the VOPc molecules and the substrate were observed. It seems, however, that not all molecules of the first monolayer interact with the substrate. Scanning tunneling microscopy (STM) suggests that the strength of the interaction depends on the molecular orientation (oxygen-up or oxygen-down). The interaction can be completely prevented by graphene as an intermediate layer. Graphene affects not only the strength of the interaction at the interface, but also the energy level alignment.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available