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Design of a Three-Terminal Nanodevice: Controlled Molecular Rectifier

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The fabrication of nanodevices with specific molecular rectifying function is one of the most significant needs in nanotechnology. In this paper we show by first principle quantum mechanics calculations, the design of an organic three-terminal device. This molecular structure has a molecular source, drain and gate. Our results are consistent with significant features as a controlled molecular rectifier (CMR) and can be summarized as: (i) it works as three devices in one integrated (TRIAC, SCR and Schottky diode) depending of operational conditions; (ii) it could be used as bi-directional rectifier; (iii) Inherent from quantum transport properties could be switched on without gate current (for voltages equal or lower [greater] than −3.5 V [2.0 V]); (iv) the molecular device doesn't allow depletion capacitance under reverse bias. In this work we apply a scheme for the transport mechanism based on properties of σ and π bonds type that can be extremely useful to construct organic devices with applications in nanotechnology.
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Keywords: QUANTUM MECHANICS METHODOLOGY; SOURCE-DRAIN-GATE DEVICE; THREE-TERMINAL DEVICE

Document Type: Research Article

Publication date: 2008-04-01

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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