Perfluoropentacene thin films on Au(111) surfaces: Effect of kinetic energy and vibrational properties

Date

2022-06-01

Author

Yavuz, Adem
Danışman, Mehmet Fatih

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We studied vibrational properties and the effect of beam kinetic energy on perfluoropentacene (PFP) thin films grown by supersonic molecular beam deposition (SMBD) technique on gold surfaces. Though similar growth mechanism was observed for different beam kinetic energies, in the case of low coverage (less than 1 monolayer) films and for low deposition rates significant differences were observed in the properties of films grown by using helium and argon carrier gasses with the former case resulting in higher average grain size. For multilayer films however there were no significant differences between helium and argon grown films. Vibrational properties were investigated by using Infrared Scattering-type Scanning Nearfield Optical Microscopy (s-SNOM) on clean and m-carborane-1-thiol (M1) coated template-stripped gold (TSAu) substrates. For both substrates thick PFP films (15 nm) had similar spectra whereas there were significant differences in the spectra of thin films (1 nm) due to PFP-substrate interactions. Davydov splitting of the IR modes were observed for both 1 nm and 15 nm films indicating similar molecular arrangements in both type of films.

Subject Keywords

Perfluoropentacene, Supersonic molecular beam deposition, Carboranethiol, Scanning, Nearfield Optical Microscopy, MOLECULAR-BEAM DEPOSITION, SELF-ASSEMBLED MONOLAYERS, PENTACENE FILMS, INTERFACE ENERGETICS, GROWTH, NUCLEATION, FLUORINATION, ORIENTATION, TRANSITION, MOBILITY

URI

https://hdl.handle.net/11511/102266

Journal

APPLIED SURFACE SCIENCE

DOI

https://doi.org/10.1016/j.apsusc.2022.152690

Collections

Department of Chemistry, Article

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Citation Formats

A. Yavuz and M. F. Danışman, “Perfluoropentacene thin films on Au(111) surfaces: Effect of kinetic energy and vibrational properties,” APPLIED SURFACE SCIENCE, vol. 586, pp. 0–0, 2022, Accessed: 00, 2023. [Online]. Available: https://hdl.handle.net/11511/102266.