Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/20105
Title: | Nucleation, Growth Mechanism, and Controlled Coating of ZnO ALD onto Vertically Aligned N-Doped CNTs |
Author: | Silva, R. M. Ferro, M. C. Araujo, J. R. Achete, C. A. Cavel, G. Silva, R. F. Pinna, N. |
Keywords: | ATOMIC LAYER DEPOSITION X-RAY PHOTOELECTRON CARBON NANOTUBE ARRAYS NITROGEN FUNCTIONALIZATION SPECTROSCOPY FILMS |
Issue Date: | 2016 |
Publisher: | AMER CHEMICAL SOC |
Abstract: | Zinc oxide thin films were deposited on vertically aligned nitrogen-doped carbon nanotubes (N-CNTs) by atomic layer deposition (ALD) from diethylzinc and water. The study demonstrates that doping CNTs with nitrogen is an effective approach for the \"activation\" of the CNTs surface for the ALD of metal oxides. Conformal ZnO coatings are already obtained after 50 ALD cycles, whereas at lower ALD cycles an island growth mode is observed. Moreover, the process allows for a uniform growth from the top to the bottom of the vertically aligned N-CNT arrays. X-ray photoelectron spectroscopy demonstrates that ZnO nucleation takes place at the N-containing species on the surface of the CNTs by the formation of the Zn-N bonds at the interface between the CNTs and the ZnO film. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20105 |
DOI: | 10.1021/acs.langmuir.6b00869 |
ISSN: | 0743-7463 |
Publisher Version: | 10.1021/acs.langmuir.6b00869 |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Nucleation Growth Mechanism and Controlled Coating of ZnO ALD onto Vertically Aligned N-Doped CNTs_10.1021acs.langmuir.6b00869.pdf | 9.56 MB | Adobe PDF |
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