Monolayer and bilayer pentacene on Cu(111)

Article

关键词: SCANNING-TUNNELING-MICROSCOPY;    ENERGY-LEVEL ALIGNMENT;    AU(111) SURFACES;    PHASES;    INTERFACE;    AG(111);    GROWTH;    FILMS;   

DOI  :  10.1103/PhysRevB.84.165436

来源: SCIE

【 摘 要 】

The morphology and electronic structure of pentacene (Pn) deposited on Cu(111) was studied using scanning tunneling microscopy (STM) and spectroscopy (STS). Deposition of a multilayer followed by annealing to reduce coverage to a monolayer results in the formation of either of two unique phases: a two-dimensional herringbone structure previously unobserved for any linear acene to our knowledge, or a random-tiling structure. Coverage greater than a monolayer promotes the formation of a bilayer phase similar to that observed for Pn/Ag(111). STS shows that the electronic structure of the first layer is strongly modified due to its proximity to the substrate, while the second layer exhibits nearly bulklike electronic structure.

【 授权许可】

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