Self-ordering of Ge islands on step-bunched Si(111) surfaces
| Autor: | Anna Sgarlata, Adalberto Balzarotti, Pierre-David Szkutnik, Nunzio Motta, Federico Rosei |
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| Rok vydání: | 2003 |
| Předmět: |
Silicon
Lithography Nanostructure Materials science Physics and Astronomy (miscellaneous) Nucleation chemistry.chemical_element Germanium Nanotechnology Settore FIS/03 - Fisica della Materia law.invention law Chemical vapor deposition Scanning tunneling microscopy Island distributions Monolayers Substrates Wetting layers (WL) Condensed matter physics Nanostructured materials Self assembly Template chemistry Growth (materials) Self-assembly Scanning tunneling microscope |
| Zdroj: | Applied Physics Letters. 83:4002-4004 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.1626260 |
| Popis: | By using step-bunched Si(111) surfaces as templates, we demonstrate the self-assembly of an ordered distribution of Ge islands without lithographic patterning. Initially, islands nucleate and evolve at step edges, up to complete ripening, forming long ribbons. Subsequently, island nucleation takes place at the center of flat terraces. Ge islands appear to be regularly spaced in scanning tunneling microscope images. The exploitation of this effect provides a possible route to grow ordered arrays of semiconducting nanostructures. |
| Databáze: | OpenAIRE |
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