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dc.contributor.authorNam, Sungho
dc.contributor.authorde la Rosa, Victor R.
dc.contributor.authorCho, Yuljae
dc.contributor.authorHamilton, Rick
dc.contributor.authorCha, SeungNam
dc.contributor.authorHoogenboom, Richard
dc.contributor.authorBradley, Donal
dc.date.accessioned2019-10-02T06:44:55Z
dc.date.available2019-10-02T06:44:55Z
dc.date.issued2019-10-01
dc.identifier.citationNam, S., de la Rosa, V. R., Cho, Y., Hamilton, R., Cha, S., Hoogenboom, R., & Bradley, D. D. C. (2019). Poly(2-alkyl-2-oxazoline) electrode interlayers for improved n-type organic field effect transistor performance. Applied Physics Letters, 115(14), 143302. doi:10.1063/1.5118337
dc.identifier.doi10.1063/1.5118337
dc.identifier.urihttp://hdl.handle.net/10754/656834
dc.description.abstractThin film interlayer materials inserted at the metal/semiconductor interface provide an effective means to improve charge injection and reduce the threshold voltage for organic field-effect transistors. Here, we report the use of poly(2-alkyl-2-oxazoline) interlayers for gold electrodes within n-type poly[[N,N′-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-bithiophene)] field-effect transistors. We specifically show that the use of poly(2-ethyl-2-oxazoline) yields a reduction in the work function from 5.07 to 4.73 eV (ΔE = 0.34 eV), an increase in the electron mobility from 0.04 to 0.15 cm2/V s (3.75 times), and a reduction in the threshold voltage from 27.5 to 16.5 V (ΔV = 11 V) relative to bare gold. The alkyl side chain of the poly(2-alkyl-2-oxazoline) has a significant influence on the film microstructure and, as a consequence, also device performance.
dc.description.sponsorshipD.D.C.B. thanks the University of Oxford for startup funds including a research fellowship for S.N.
dc.publisherAIP Publishing
dc.relation.urlhttp://aip.scitation.org/doi/10.1063/1.5118337
dc.rightsThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Applied Physics Letters and may be found at http://doi.org/10.1063/1.5118337.
dc.titlePoly(2-alkyl-2-oxazoline) electrode interlayers for improved n-type organic field effect transistor performance
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentOffice of the VP
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalApplied Physics Letters
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Physics, Division of Mathematical, Physical and Life Sciences, University of Oxford, Oxford OX1 3PU, United Kingdom
dc.contributor.institutionSupramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
dc.contributor.institutionDepartment of Engineering Science, Division of Mathematical, Physical and Life Sciences, University of Oxford, Oxford OX1 3PJ, United Kingdom
dc.contributor.institutionDepartment of Physics, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, South Korea
kaust.personBradley, Donal
refterms.dateFOA2019-10-02T06:46:20Z
dc.date.published-online2019-10-01
dc.date.published-print2019-09-30


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