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Local Charge Trapping in Conjugated Polymers Resolved by Scanning Kelvin Probe Microscopy

Hallam, Toby (author)
University of Cambridge, England
Lee, MiJung (author)
University of Cambridge, England
Zhao, Ni (author)
University of Cambridge, England
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Nandhakumar, Iris (author)
University of Southampton, England
Kemerink, Martijn (author)
University of Cambridge, England; Eindhoven University of Technology, Netherlands
Heeney, Martin (author)
University of London Imperial Coll Science Technology and Med, England
McCulloch, Iain (author)
University of London Imperial Coll Science Technology and Med, England
Sirringhaus, Henning (author)
University of Cambridge, England
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 (creator_code:org_t)
American Physical Society, 2009
2009
English.
In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 103:25
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The microstructure of conjugated polymers is heterogeneous on the length scale of individual polymer chains, but little is known about how this affects their electronic properties. Here we use scanning Kelvin probe microscopy with resolution-enhancing carbon nanotube tips to study charge transport on a 100 nm scale in a chain-extended, semicrystalline conjugated polymer. We show that the disordered grain boundaries between crystalline domains constitute preferential charge trapping sites and lead to variations on a 100 nm scale of the carrier concentration under accumulation conditions.

Subject headings

NATURVETENSKAP  -- Kemi -- Polymerkemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Polymer Chemistry (hsv//eng)

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ref (subject category)
art (subject category)

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