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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 2021-02-25T20:34:55Z
dc.date.available 2021-02-25T20:34:55Z
dc.date.issued 2020
dc.identifier.issn 0304-3991
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/161841
dc.description.abstract © 2020 Elsevier B.V. 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.relation.ispartofseries Ultramicroscopy
dc.subject Charge carrier mobility
dc.subject Conductive AFM
dc.subject Current distribution
dc.subject Organic semiconductor
dc.subject Space charge limited current
dc.title Nanoscale mobility mapping in semiconducting polymer films
dc.type Article
dc.relation.ispartofseries-volume 218
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS03043991-2020-218-SID85088753775

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  • Публикации сотрудников КФУ Scopus [22633]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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