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Band gap tuning of carbon nanotubes for sensor and interconnect applications — A quantum simulation study

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7 Author(s)
Jan Sommer ; Center for Microtechnologies, Chemnitz Univ. of Technol., Chemnitz, Germany ; Andreas Zienert ; Sibylle Gemming ; Helmholtz Zentrum
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Carbon nanotubes (CNTs) are a promising material for novel sensor and interconnect applications. In both cases, the device performance depends strongly on the electronic properties of the tubes. Methods for tuning the electronic structure and especially the band gap are highly desirable. A computational study of cobalt decorated CNTs, by means of density functional theory, reveals that very few cobalt atoms can have a significant impact on the electronic structure, turning semiconducting CNTs into the metallic state. This is further verified by quantum transport simulations. The influence of different amounts of cobalt is also investigated.

Published in:

Systems, Signals and Devices (SSD), 2012 9th International Multi-Conference on

Date of Conference:

20-23 March 2012