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dc.contributor.authorAlekseev, A.
dc.contributor.authorYedrissov, A.
dc.contributor.authorHedley, G. J.
dc.contributor.authorIbraikulov, O.
dc.contributor.authorHeiser, T.
dc.contributor.authorSamuel, I. D.W.
dc.contributor.authorKharintsev, S.
dc.date.accessioned2021-07-21T23:35:23Z
dc.date.available2021-07-21T23:35:23Z
dc.date.issued2020-11
dc.identifier269495608
dc.identifier4d3c65b6-6d2a-4679-99d3-c933306b6240
dc.identifier85088753775
dc.identifier000588015200007
dc.identifier.citationAlekseev , A , Yedrissov , A , Hedley , G J , Ibraikulov , O , Heiser , T , Samuel , I D W & Kharintsev , S 2020 , ' Nanoscale mobility mapping in semiconducting polymer films ' , Ultramicroscopy , vol. 218 , 113081 . https://doi.org/10.1016/j.ultramic.2020.113081en
dc.identifier.issn0304-3991
dc.identifier.urihttps://hdl.handle.net/10023/23615
dc.descriptionThis work was supported by grant No 19-12-00066 of the Russian Science Foundation.en
dc.description.abstractLocal electrical properties of thin films of the polymer PTB7 are studied by conductive atomic force microscopy (C-AFM). Non-uniform nanoscale current distribution in the neat PTB7 film is revealed and connected with the existence of ordered PTB7 crystallites. The shape of local I-V curves is explained by the presence of space charge limited current. We modify an existing semi-empirical model for estimation of the nanoscale hole mobility from our experimental C-AFM measurements. The procedure of nanoscale charge mobility estimation was described and applied to the PTB7 films. The calculated average C-AFM hole mobility is in good agreement with macroscopic values reported for this material. Mapping of nanoscale hole mobility was achieved using the described procedure. Local mobility values, influenced by nanoscale structure, vary more than two times in value and have a root-mean-square value 0.22 × 10−8 m2/(Vs), which is almost 20% from average hole mobility.
dc.format.extent1351683
dc.language.isoeng
dc.relation.ispartofUltramicroscopyen
dc.subjectCharge carrier mobilityen
dc.subjectConductive AFMen
dc.subjectCurrent distributionen
dc.subjectOrganic semiconductoren
dc.subjectSpace charge limited currenten
dc.subjectQC Physicsen
dc.subjectElectronic, Optical and Magnetic Materialsen
dc.subjectAtomic and Molecular Physics, and Opticsen
dc.subjectInstrumentationen
dc.subjectNDASen
dc.subject.lccQCen
dc.titleNanoscale mobility mapping in semiconducting polymer filmsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doi10.1016/j.ultramic.2020.113081
dc.description.statusPeer revieweden
dc.date.embargoedUntil2021-07-22


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