Details

Autor(en) / Beteiligte

• Greulich, Katharina
• Belser, Axel
• Bölke, Sven
• Grüninger, Peter
• Karstens, Reimer
• Sättele, Marie S
• Ovsyannikov, Ruslan
• Giangrisostomi, Erika
• Basova, Tamara V
• Klyamer, Darya
• Chassé, Thomas
• Peisert, Heiko

Titel

Charge Transfer from Organic Molecules to Molybdenum Disulfide: Influence of the Fluorination of Iron Phthalocyanine

Ist Teil von

• Journal of physical chemistry. C, 2020-08, Vol.124 (31), p.16990-16999

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Layered transition metal dichalcogenides (TMDCs), such as molybdenum disulfide (MoS2), are currently in the focus of interest due to their novel electronic properties. The adsorption of molecules is a promising way to tune the electronic structure of TMDCs. We study interface properties between MoS2 and differently fluorinated iron phthalocyanines (FePcF x , x = 0, 4, 16) using X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), angle-resolved photoelectron spectroscopy (ARPES), and X-ray absorption spectroscopy (XAS). A key parameter for the charge transfer is the ionization potential of FePcF x . A distinct electron transfer from a molecule to a substrate is observed for FePc and FePcF4. From energy-momentum ARPES maps, we suppose that the substrate and FePc-related states hybridize at the interface. This study demonstrates that a controlled tuning of the electronic structure of MoS2 by electron donors is possible, driven by the ionization potential difference between the substrate and the adsorbate.