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Título: | Controlled generation of atomic vacancies in chemical vapor deposited graphene by microwave oxygen plasma |
Autor: | Rozada Rodríguez, Rubén CSIC; Solís Fernández, Pablo CSIC; Paredes Nachón, Juan Ignacio CSIC ORCID ; Martínez Alonso, Amelia CSIC ORCID ; Ago, H.; Díez Tascón, Juan Manuel CSIC ORCID | Fecha de publicación: | 2014 | Editor: | Elsevier | Citación: | Carbon 79: 664-669 (2014) | Resumen: | The introduction of atomic-scale defects in a controllable manner and the understanding of their effect on the characteristics of graphene are essential to develop many applications based on this two-dimensional material. Here, we investigate the use of microwave-induced oxygen plasma towards the generation of small-sized atomic vacancies (holes) in graphene grown by chemical vapor deposition. Scanning tunneling microscopy revealed that tunable vacancy densities in the 103–105 μm−2 range could be attained with proper plasma parameters. Transport measurements and Raman spectroscopy revealed p-type doping and a decrease in charge carrier mobility for the vacancy-decorated samples. This plasma-modified graphene could find use in, e.g., gas or liquid separation, or molecular sensing. | Versión del editor: | http://dx.doi.org/10.1016/j.carbon.2014.08.015 | URI: | http://hdl.handle.net/10261/103431 | DOI: | 10.1016/j.carbon.2014.08.015 | ISSN: | 0008-6223 |
Aparece en las colecciones: | (INCAR) Artículos |
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Controlled_generation_Rozada.pdf | 507,03 kB | Adobe PDF | Visualizar/Abrir |
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