Field Emission with Ultralow Turn On Voltage from Metal Decorated Carbon Nanotubes
- 15 July 2014
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 8 (8) , 7763-7770
Abstract
A simple and scalable method of decorating 3D-carbon nanotube (CNT) forest with metal particles has been developed. The results observed in aluminum (Al) decorated CNTs and copper (Cu) decorated CNTs on silicon (Si) and Inconel are compared with undecorated samples. A significant improvement in the field emission characteristics of the cold cathode was observed with ultralow turn on voltage (Eto ∼ 0.1 V/μm) due to decoration of CNTs with metal nanoparticles. Contact resistance between the CNTs and the substrate has also been reduced to a large extent, allowing us to get stable emission for longer duration without any current degradation, thereby providing a possibility of their use in vacuum microelectronic devices.Keywords
Funding Information
- U.S. Department of War (FA9550-12-1-0035)
- Secretaría de Ciencia, Humanidades, Tecnología e Innovación (213780)
- Indian Institute of Science
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