Dynamic response of polycrystalline organic thin film transistors

dc.contributor.advisorDodabalapur, Ananth, 1963-en
dc.contributor.committeeMemberTutuc, Emanuelen
dc.contributor.committeeMemberBank, Sethen
dc.contributor.committeeMemberRegister, Leonard F.en
dc.contributor.committeeMemberLi, Xiaoqinen
dc.creatorCobb, Brian Hardy, 1982-en
dc.date.accessioned2011-01-07T20:18:21Zen
dc.date.available2011-01-07T20:18:21Zen
dc.date.available2011-01-07T20:18:27Zen
dc.date.issued2010-05en
dc.date.submittedMay 2010en
dc.date.updated2011-01-07T20:18:27Zen
dc.descriptiontexten
dc.description.abstractIn this dissertation, charge transport through organic field effect transistors is explored. In particular, small molecule-based devices consisting of Pentacene semiconducting thin films are investigated. The relationship between electric field and carrier velocity is explored over a wide range of electric fields. These velocities are then compared to directly measured velocities measured from transient measurements. New device structures are fabricated in order to provide low voltage operation, along with a method to stabilize the output response and reduce bias stress effects. A novel method is proposed to investigate the dynamics of trap response rate in highly localized systems through the characterization of the large signal frequency response of a vii device. This method is then used to gain greater insight into bias stress effects and the ability of a transistor to respond to a rapidly changing input. A greater understanding of the transport of charge through a channel is obtained, leading to a more realistic picture in which a single mobility value is an insufficient description of carrier transport through a material.en
dc.description.departmentElectrical and Computer Engineeringen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2010-05-794en
dc.language.isoengen
dc.subjectOrganic transistoren
dc.subjectTransporten
dc.subjectThin filmsen
dc.subjectElectric fielden
dc.subjectVelocityen
dc.titleDynamic response of polycrystalline organic thin film transistorsen
dc.type.genrethesisen
thesis.degree.departmentElectrical and Computer Engineeringen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorUniversity of Texas at Austinen
thesis.degree.levelDoctoralen
thesis.degree.nameDoctor of Philosophyen

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