The metal–organic interface between polycrystalline gold and hexafluorotetracyanonaphthoquinodimethane (F₆TCNNQ) was investigated by photoelectron spectroscopy with the focus on the charge transfer characteristics from the metal to the molecule. The valence levels, as well as the core levels of the heterojunction, indicate a full electron transfer and a change in the chemical environment. The changes are observed in the first F₆TCNNQ layers, whereas for further film growth, only neutral F₆TCNNQ molecules could be detected. New occupied states below the Fermi level were observed in the valence levels, indicating a lowest unoccupied molecular orbital (LUMO) occupation due to the charge transfer. A fitting of the spectra reveals the presence of a neutral and a charged F₆TCNNQ molecules, but no further species were present.

中文翻译：

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F6TCNNQ-金接口的电荷转移特性

通过光电子能谱研究了多晶金和六氟四氰基萘并喹二甲烷（F ₆ TCNNQ）之间的金属-有机界面，重点是从金属到分子的电荷转移特性。价态以及异质结的核心能级表示电子完全转移，化学环境发生了变化。在最初的F ₆ TCNNQ层中观察到了这种变化，而对于进一步的膜生长，仅中性的F ₆可以检测到TCNNQ分子。在价态水平上观察到了费米能级以下的新占据态，这表明由于电荷转移，最低未占据分子轨道（LUMO）占据。光谱的拟合揭示了中性和带电的F ₆ TCNNQ分子的存在，但没有其他物种存在。