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.
Controlling transistor threshold voltages using molecular dipoles
Smitha Vasudevan, Neeti Kapur, Tao He, Matthew Neurock, James M. Tour, Avik W. Ghosh; Controlling transistor threshold voltages using molecular dipoles. J. Appl. Phys. 1 May 2009; 105 (9): 093703. https://doi.org/10.1063/1.3091290
Download citation file: