Search: onr:"swepub:oai:research.chalmers.se:bbbe53ea-62a6-4ee3-98b6-d9b63591b494" >
Tuneable conductivi...
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Greijer, HelenaHitachi, Ltd.
(author)
Tuneable conductivity at extreme electric fields in ZnO tetrapod-silicone composites for high-voltage power cable insulation
- Article/chapterEnglish2022
Publisher, publication year, extent ...
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2022-04-11
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Springer Science and Business Media LLC,2022
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:research.chalmers.se:bbbe53ea-62a6-4ee3-98b6-d9b63591b494
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https://research.chalmers.se/publication/530052URI
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https://doi.org/10.1038/s41598-022-09966-4DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Resistive Field Grading Materials (RFGM) are used in critical regions in the electrical insulation system of high-voltage direct-current cable systems. Here, we describe a novel type of RFGM, based on a percolated network of zinc oxide (ZnO) tetrapods in a rubber matrix. The electrical conductivity of the composite increases by a factor of 108 for electric fields > 1 kV mm-1, as a result of the highly anisotropic shape of the tetrapods and their significant bandgap (3.37 eV). We demonstrate that charge transport at fields < 1 kV mm-1 is dominated by thermally activated hopping of charge carriers across spatially, as well as energetically, localized states at the ZnO-polymer interface. At higher electric fields (> 1 kV mm-1) band transport in the semiconductive tetrapods triggers a large increase in conductivity. These geometrically enhanced ZnO semiconductors outperform standard additives such as SiC particles and ZnO micro varistors, providing a new class of additives to achieve variable conductivity in high-voltage cable system applications.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Mirotta, NicolaIstituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
(author)
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Treossi, E.Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
(author)
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Valorosi, FilippoIstituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
(author)
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Schütt, FabianChristian-Albrechts-Universität zu Kiel,University of Kiel
(author)
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Siebert, LeonardChristian-Albrechts-Universität zu Kiel,University of Kiel
(author)
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Mishra, Yogendra KumarSyddansk Universitet,University of Southern Denmark
(author)
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Adelung, RainerChristian-Albrechts-Universität zu Kiel,University of Kiel
(author)
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Palermo, Vincenzo,1972Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR),Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)palermo
(author)
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Hillborg, HenrikHitachi, Ltd.
(author)
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Hitachi, Ltd.Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR)
(creator_code:org_t)
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In:Scientific Reports: Springer Science and Business Media LLC12:1, s. 6035-2045-23222045-2322
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Greijer, Helena
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Mirotta, Nicola
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Treossi, E.
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Valorosi, Filipp ...
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Schütt, Fabian
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Siebert, Leonard
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Mishra, Yogendra ...
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Adelung, Rainer
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Palermo, Vincenz ...
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Hillborg, Henrik
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