Monolayer and bilayer pentacene on Cu (111)

Smerdon, Joe orcid iconORCID: 0000-0002-7387-8362, Bode, M., Guisinger, N. P. and Guest, J. R. (2011) Monolayer and bilayer pentacene on Cu (111). Physical Review B (PRB), 84 (16). p. 165436.

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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.

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