Interfacial charge transfer in nanoscale polymer transistors

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dc.contributor.advisorNatelson, Douglas
dc.creatorWorne, Jeffrey Howard
dc.date.accessioned2011-07-25T01:39:25Z
dc.date.available2011-07-25T01:39:25Z
dc.date.issued2009
dc.description.abstractInterfacial charge transfer plays an essential role in establishing the relative alignment of the metal Fermi level and the energy bands of organic semiconductors. While the details remain elusive in many systems, this charge transfer has been inferred in a number of photoemission experiments. We present electronic transport measurements in very short channel (L < 100 nm) transistors made from poly(3-hexylthiophene) (P3HT). As channel length is reduced, the evolution of the contact resistance and the zero gate voltage conductance are consistent with such charge transfer. Short channel conduction in devices with Pt contacts is greatly enhanced compared to analogous devices with Au contacts, consistent with charge transfer expectations. Alternating current scanning tunneling microscopy (ACSTM) provides further evidence that holes are transferred from Pt into P3HT, while much less charge transfer takes place at the Au/P3HT interface.
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS E.E. 2009 WORNE
dc.identifier.citationWorne, Jeffrey Howard. "Interfacial charge transfer in nanoscale polymer transistors." (2009) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/61914">https://hdl.handle.net/1911/61914</a>.
dc.identifier.urihttps://hdl.handle.net/1911/61914
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectElectronics
dc.subjectElectrical engineering
dc.subjectCondensed matter physics
dc.titleInterfacial charge transfer in nanoscale polymer transistors
dc.typeThesis
dc.type.materialText
thesis.degree.departmentElectrical Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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