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Nanoscale mobility mapping in semiconducting polymer films
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dc.contributor.author | Alekseev, A. | |
dc.contributor.author | Yedrissov, A. | |
dc.contributor.author | Hedley, G. J. | |
dc.contributor.author | Ibraikulov, O. | |
dc.contributor.author | Heiser, T. | |
dc.contributor.author | Samuel, I. D.W. | |
dc.contributor.author | Kharintsev, S. | |
dc.date.accessioned | 2021-07-21T23:35:23Z | |
dc.date.available | 2021-07-21T23:35:23Z | |
dc.date.issued | 2020-11 | |
dc.identifier | 269495608 | |
dc.identifier | 4d3c65b6-6d2a-4679-99d3-c933306b6240 | |
dc.identifier | 85088753775 | |
dc.identifier | 000588015200007 | |
dc.identifier.citation | Alekseev , 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.2020.113081 | en |
dc.identifier.issn | 0304-3991 | |
dc.identifier.uri | https://hdl.handle.net/10023/23615 | |
dc.description | This work was supported by grant No 19-12-00066 of the Russian Science Foundation. | en |
dc.description.abstract | Local 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.extent | 1351683 | |
dc.language.iso | eng | |
dc.relation.ispartof | Ultramicroscopy | en |
dc.subject | Charge carrier mobility | en |
dc.subject | Conductive AFM | en |
dc.subject | Current distribution | en |
dc.subject | Organic semiconductor | en |
dc.subject | Space charge limited current | en |
dc.subject | QC Physics | en |
dc.subject | Electronic, Optical and Magnetic Materials | en |
dc.subject | Atomic and Molecular Physics, and Optics | en |
dc.subject | Instrumentation | en |
dc.subject | NDAS | en |
dc.subject.lcc | QC | en |
dc.title | Nanoscale mobility mapping in semiconducting polymer films | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Centre for Biophotonics | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.identifier.doi | https://doi.org/10.1016/j.ultramic.2020.113081 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2021-07-22 |
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