Tuning functionality of printed conductive polymers using proximity ion beam lithograthy

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dc.contributor.advisorStein, Gila E.
dc.contributor.committeeMemberDonnelly, Vincent M.
dc.contributor.committeeMemberRuchhoeft, Paul
dc.creatorAhmadi Vaselabadi, Saeed
dc.date.accessioned2016-08-18T21:50:03Z
dc.date.available2016-08-18T21:50:03Z
dc.date.createdMay 2014
dc.date.issued2014-05
dc.date.updated2016-08-18T21:50:04Z
dc.description.abstractPolymer semiconductors are used in low-cost electronics such as plastic solar cells, thin film transistors, and light-emitting diodes. Their performance in these devices is partly dictated by molecular ordering and nanoscale structure, where the latter is particularly difficult to control. We demonstrate a simple approach to control the structure and function of polymer semiconductors by patterning with proximity ion beam lithography (PIBL). The lithographic process generates intermolecular cross-links that render the polymer insoluble in organic solvents. The effects of PIBL exposure dose on optoelectronic properties and molecular ordering were investigated with measurements of ultraviolet-visible absorbance, hole mobility in the space-charge-limited regime, and crystallinity. We find evidence that extensive cross-linking will disrupt intermolecular ordering and introduce electronic trap states that reduce absorbance and mobility.
dc.description.departmentChemical and Biomolecular Engineering, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10657/1406
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectPolymer semiconductors
dc.subjectProximity ion beam lithography
dc.subjectP3HT
dc.subjectCharge mobility
dc.subjectMolecular ordering
dc.titleTuning functionality of printed conductive polymers using proximity ion beam lithograthy
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCullen College of Engineering
thesis.degree.departmentChemical and Biomolecular Engineering, Department of
thesis.degree.disciplineChemical Engineering
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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