Electronic structures of highly-ordered films of self-assembled graphitic nano-columns
| Autor: | R. Friedlein, X. Crispin, C.D. Simpson, M.D. Watson, F. Jäckel, W. Osikowicz, S. Marciniak, M.P. de Jong, P. Samorì, S.K.M. Jönsson, M. Fahlman, K. Müllen, J.P. Rabe, W.R. Salaneck |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | 68 (2003): 195414. info:cnr-pdr/source/autori:R. Friedlein, X. Crispin, C.D. Simpson, M.D. Watson, F. Jäckel, W. Osikowicz, S. Marciniak, M.P. de Jong, P. Samorì, S.K.M. Jönsson, M. Fahlman, K. Müllen, J.P. Rabe, W.R. Salaneck/titolo:Electronic structures of highly-ordered films of self-assembled graphitic nano-columns/doi:/rivista:/anno:2003/pagina_da:195414/pagina_a:/intervallo_pagine:195414/volume:68 |
| Popis: | Highly ordered, several nanometers thick films of alkylated large planar, polycyclic aromatic hydrocarbon (PAH) molecules have been grown on semi-metallic molybdenum disulfide substrates. The films are characterized by a two-dimensional lateral arrangement of columns standing at the surface on a macroscopic scale. The self-assembly of such insulated columns of face-to-face disks with surface-induced vertical alignment has been achieved directly from solution processing. Angle-resolved photoelectron spectra revealed a highly anisotropic quasi-one-dimensional electronic structure with an extended p-electronic wave function. An intermolecular dispersion of the highest occupied band of at least 0.15 eV along the stacking direction has been measured. A partial breakdown of the concept of quasimomentum due to the finite size of the nano-objects perpendicular to the stacks is observed. |
| Databáze: | OpenAIRE |
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