Beilstein J. Nanotechnol.2020,11, 1492–1503, doi:10.3762/bjnano.11.132
of such decoupling layers may effectively change the electron donating properties of the substrate, for example, by lowering its work function and thus enhancing the charging of the molecular adsorbate layer through electron tunneling. Here, an experimental study of the charging of para-sexiphenyl
: decoupling; integer charge transfer; organic films; para-sexiphenyl; thin dielectric film; Introduction
Since the first scanning tunneling microscope (STM) imaging of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) of pentacene (5A) on NaCl/Cu(111) was
constant of the thin film, and dcs is the distance between the charge in the molecule and its image charge in the metal (i.e., the charge separation distance).
In this report, we demonstrate the robustness of the conclusions drawn from the 5A study by considering para-sexiphenyl (6P, C36H26). In contrast
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Figure 1:
Molecular level schematic of integer charge transfer across dielectric films. Top: The ratio of int...
Beilstein J. Nanotechnol.2012,3, 507–512, doi:10.3762/bjnano.3.58
MS and PFS, respectively. para-Sexiphenyl (6P) thin films were grown on Si{001} wafers covered by a native oxide in an UHV system with a base pressure of 1 × 10−10 mbar. Prior to thin-film growth the substrate was flashed to 500 °C. 6P was deposited at room temperature from a Knudsen cell [8][9]. For
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Figure 1:
HIM images with a FoV of 20 μm of thin organic layers on Si{001}. Data was recorded with a PE of 15...