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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Reordering and Disordering of the Copper Hexadecafluorophthalocyanine (F_(16)CuPc) Monolayer by K Doping
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Reordering and Disordering of the Copper Hexadecafluorophthalocyanine (F_(16)CuPc) Monolayer by K Doping

机译：通过K掺杂对六氟六氟酞菁铜（F_（16）CuPc）单层的重排和无序

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摘要

Potassium (K)-induced structural and electronic modifications in the copper hexadecafluorophthalocyanine (F_(16)CuPc) monolayer were investigated by scanning tunneling microscopy and photoemission spectroscopy. The adsorption of K was found to cause a rearrangement of the molecular ordering in the F_(16)CuPc monolayer, depending on the K concentration. For doping with one to two K atoms per molecule, K adsorbs in the intermolecular region adjacent to the aza-bridging nitrogen, forming new ordered phases. A further increase in K coverage causes the on-top adsorption of K, which in turn disorders the monolayer. The photoemission spectrum of the K-doped phase exhibits a small density of states immediately below the Fermi level. Both the formation of the new states and the K-induced structural ordering or disordering of the molecular layer may be responsible for the reported alteration of the macroscopic electronic conductivity.
机译：通过扫描隧道显微镜和光发射光谱研究了钾（K）诱导的六氟铜酞菁铜（F_（16）CuPc）单层的结构和电子修饰。发现K的吸附会导致F_（16）CuPc单分子层中的分子有序重新排列，具体取决于K的浓度。为了每个分子掺杂一到两个K原子，K吸附在氮杂桥连氮附近的分子间区域，形成新的有序相。钾离子覆盖率的进一步提高会导致钾离子在顶部的吸附，进而扰乱单分子层。掺杂K的相的光发射光谱在紧随费米能级以下的状态显示出很小的状态密度。新状态的形成和分子层的K诱导的结构有序性或无序性都可能与宏观电子电导率的报道变化有关。

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