Abstract
As electrical devices shrink to the atomic scale, it is expected that Moore's law will soon be obsolete for semiconductor devices. In 1974, Avriam and Ratner predicted that organic devices could replace semiconductor technology, leading to extensive research on molecular-based organic devices. This dissertation delves into the theoretical frameworks used to examine the transport in molecular junctions and aims to enhance our comprehension of charge transport and conduction properties. The studies presented in this thesis illustrates that a molecule's alteration by just a single atom can change it from an insulator to a conductor, and also that, by fine-tuning the molecule-electrode coupling strength and the tunneling distance in a molecular junction, the mechanism of charge transport across molecular wires can be switched between the normal and Inverted Marcus regions. The dissertation also presents molecular devices that function as reliable electrical switches, both static and dynamic. The findings of this research provide evidence of the feasibility of organic devices, including rectifiers and switches, with applications ranging from traditional semiconductor device replacement to neuromorphic computing.
Notes
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Graduation Date
2023
Semester
Summer
Advisor
Del Barco, Enrique
Degree
Doctor of Philosophy (Ph.D.)
College
College of Sciences
Department
Physics
Degree Program
Physics
Identifier
CFE0009681; DP0027788
URL
https://purls.library.ucf.edu/go/DP0027788
Language
English
Release Date
August 2023
Length of Campus-only Access
None
Access Status
Doctoral Dissertation (Open Access)
STARS Citation
Adoah, Francis, "Theoretical Analysis of Charge Conduction and Rectification in Self-Assembled-Monolayers in Molecular Junctions" (2023). Electronic Theses and Dissertations, 2020-. 1873.
https://stars.library.ucf.edu/etd2020/1873