journal article·2011-06-28

Millimeter-Long Carbon Nanotubes: Outstanding Electron-Emitting Sources

Néstor Perea-López, Bernabé Rebollo-Plata, Juan Antonio Briones-León, Aarón Morelos-Gómez, Daniel Hernández-Cruz, Gustavo A. Hirata, Vincent Meunier, Andrés R. Botello-Méndez, Jean-Christophe Charlier, Benji Maruyama, Emilio Muñoz-Sandoval, Florentino López-Urías, Mauricio Terrones, Humberto Terrones

ACS Nano· Volume 5· Issue 6
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Abstract

We are reporting the fabrication of a very efficient electron source using millimeter-long and highly crystalline carbon nanotubes. These devices start to emit electrons at fields as low as 0.17 V/μm and reach threshold emission at 0.24 V/μm. In addition, these electron sources are very stable and can achieve a peak current density of 750 mA cm(-2) at only 0.45 V/μm. In order to demonstrate intense electron beam generation, these devices were used to produce visible light by cathodoluminescence. Finally, density functional theory calculations were used to rationalize the measured electronic field emission properties in open carbon nanotubes of different lengths. The modeling establishes a clear correlation between length and field enhancement factor.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Carbon Nanotubes in Composites · Fullerene Chemistry and Applications · Molecular Junctions and Nanostructures

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, The Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania 16802-6300, United States

Advanced Materials Department, IPICYT, Camino a la Presa San José 2055, Lomas 4a. Sección, San Luis Potosí 78216, México

Center for Nanoscience and Nanotechnology-UNAM, Km 107 Carretera Tijuana-Ensenada, Ensenada, B. C, 22860, México

Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12280, United States

Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, Place Croix du Sud 1 (NAPS-Boltzmann), B-1348 Louvain-la-Neuve, Belgium

Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, Ohio 45433, United States

Department of Physics, Department of Materials Science and Engineering, and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802-6300, United States, and Research Center for Exotic Nanocarbons (JST), Shinshu University, Wakasato 4-17-1, Nagano 380-8553, Japan

Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, Tennessee 37831-6367, United States

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