Controlling transistor threshold voltages using molecular dipoles

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Authors
Vasudevan, Smitha
Kapur, Neeti
He, Tao
Neurock, Matthew
Tour, James M.
Ghosh, Avik W.
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Abstract
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We develop a theoretical model for how organic molecules can control the electronic and transport properties of an underlying transistor channel to whose surface they are chemically bonded. The influence arises from a combination of long-ranged dipolar electrostatics due to the molecular head-groups, as well as short-ranged charge transfer and interfacial dipole driven by equilibrium band-alignment between the molecular backbone and the reconstructed semiconductor surface atoms.
Comment: 5 pages, 5 figures, 1 table
Keywords
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
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