Selective decoration of isolated carbon nanotubes by potassium evaporation: scanning photoemission microscopy and density functional theory
| Autor: | Rony Snyders, Maureen J. Lagos, Matteo Amati, Claudia Struzzi, Gustaaf Van Tendeloo, Mattia Scardamaglia, Carla Bittencourt, Dogan Erbahar, Christopher P. Ewels, Luca Gregoratti |
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| Přispěvatelé: | Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN), Centre d'Innovation et de Recherche en Matériaux Polymères (CIRMAP), Université de Mons (UMons), Elettra Sincrotrone Trieste, EMAT, University of Antwerp (UA), Chimie des Interactions Plasma-Surface (ChIPS) (ChIPS), Université de Mons-Hainaut, LCIA (LCIA) |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Selective chemistry of single-walled nanotubes chemistry.chemical_element Nanotechnology 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences law.invention Condensed Matter::Materials Science law Microscopy Materials Chemistry ComputingMilieux_MISCELLANEOUS Physics General Chemistry 021001 nanoscience & nanotechnology Alkali metal Evaporation (deposition) 0104 chemical sciences Optical properties of carbon nanotubes chemistry Chemical physics [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Density functional theory 0210 nano-technology Carbon |
| Zdroj: | Journal of Materials Chemistry C Journal of Materials Chemistry C, Royal Society of Chemistry, 2015, 3 (11), pp.2518-2527. ⟨10.1039/c4tc02478h⟩ Journal of materials chemistry C : materials for optical and electronic devices |
| ISSN: | 2050-7534 2050-7526 |
| Popis: | Site selective doping of aligned carbon nanostructures represents a promising approach for their implementation in actual devices. In the present work we report on alkali metals decoration on low density vertically aligned carbon nanotubes, disclosing the possibility of engineering site selective depositions of potassium atoms on the carbon systems. Photoemission measurements were combined with microscopy demonstrating the effective spatial control of alkali deposition. The changes of electronic structures of locally doped carbon regions were studied by exploiting the ability of the scanning photoemission microscopy technique. From the analysis of experimental data supported by theoretical calculations, we show the tuning of the charge transfer from potassium to carbon atoms belonging to neighboring nanotubes or along the same tube structure. |
| Databáze: | OpenAIRE |
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