Interface driven engineering of charge transport across molecular tunneling junctions

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dc.contributor.advisor Martin Thuo
dc.contributor.author Chen, Jiahao
dc.contributor.department Materials Science and Engineering
dc.date 2018-08-12T00:07:36.000
dc.date.accessioned 2020-06-30T03:08:42Z
dc.date.available 2020-06-30T03:08:42Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2017
dc.date.embargo 2018-01-16
dc.date.issued 2017-01-01
dc.description.abstract <p>Molecular electronics uses organic molecules to replace inorganic electrical components in circuits. Molecular electronics is a promising field that can extend the Moore’s law since scaling down transistors with molecules is comparatively easier than inorganic componnets fabricated using optical lithography.</p> <p>This thesis describes a platform that can be used to study molecular electronics, which is self-assembled monolayers based large area tunneling junction with Eutectic Gallium Indium as top electrode and metal thin film as bottom electrode.</p> <p>The role of interfaces in the junctions has been evaluated. The morphology of both bottom electrode and top electrode affects the charge transport behavior (in these system, it is quantum tunneling) across those molecular tunneling junctions. The effect of the bottom electrode morphology on the molecular structure of the SAM has been discussed in details.</p> <p>Effect of molecular dipole on charge transport across the junctions has been studied. The dipole can affect the coupling between the molecule and the substrate and hence the charge transport. For a more complex system where the dipole has been decoupled from the substrate, the effect of dipole on tunneling can only be delineated from a statistical analysis.</p> <p>From these studies, it has been acknowledged that interfaces plays an important role in molecular junctions. Therefore, to design or control the charge transport by engineering the interfaces is made possible.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/16099/
dc.identifier.articleid 7106
dc.identifier.contextkey 11454782
dc.identifier.doi https://doi.org/10.31274/etd-180810-5728
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/16099
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/30282
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/16099/Chen_iastate_0097E_16806.pdf|||Fri Jan 14 20:54:56 UTC 2022
dc.subject.disciplines Materials Science and Engineering
dc.subject.disciplines Mechanics of Materials
dc.subject.keywords Molecular electronics
dc.subject.keywords Self-assembled monolayer
dc.subject.keywords Tunneling junctions
dc.title Interface driven engineering of charge transport across molecular tunneling junctions
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
thesis.degree.discipline Materials Science and Engineering
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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