Organic bilayer systems and heterostructures are of enormous importance for optoelectronic devices. We study interface properties and the structural ordering of cobalt phthalocyanine (CoPc) on a highly ordered monolayer hexa-peri-hexabenzocoronene (HBC), grown on Au(111), using photoemission, X-ray absorption, scanning tunneling microscopy, and low-energy electron diffraction. A charge transfer between CoPc and the gold substrate is almost completely prevented by the HBC intermediate layer. We show that HBC acts as a template for the initial growth of CoPc molecules. After annealing to 630 K, a molecular exchange takes place, resulting in a coexistence of domains of both CoPc and HBC molecules on the surface.

中文翻译：

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CoPc 在纳米石墨烯包覆的 Au(111) 上的界面特性和退火的影响

有机双层系统和异质结构对于光电器件具有极其重要的意义。我们使用光电发射、X 射线吸收、扫描隧道显微镜和低-能量电子衍射。HBC 中间层几乎完全阻止了 CoPc 和金基板之间的电荷转移。我们展示了 HBC 作为 CoPc 分子初始生长的模板。退火至 630 K 后，发生分子交换，导致 CoPc 和 HBC 分子域在表面共存。