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Enhanced Vertical C...
Enhanced Vertical Charge Transport in a Semiconducting P3HT Thin Film on Single Layer Graphene
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- Skrypnychuk, Vasyl (författare)
- Umeå universitet,Institutionen för fysik
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- Boulanger, Nicolas (författare)
- Umeå universitet,Institutionen för fysik
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Yu, Victor (författare)
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Hilke, Michael (författare)
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Mannsfeld, Stefan C. B. (författare)
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Toney, Michael F. (författare)
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- Barbero, David R. (författare)
- Umeå universitet,Institutionen för fysik,Nano-engineered Materials and Organic Electronics
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(creator_code:org_t)
- 2014-11-06
- 2015
- Engelska.
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Ingår i: Advanced Functional Materials. - : Wiley. - 1616-301X .- 1616-3028. ; 25:5, s. 664-670
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The crystallization and electrical characterization of the semiconducting polymer poly(3-hexylthiophene) (P3HT) on a single layer graphene sheet is reported. Grazing incidence X-ray diffraction revealed that P3HT crystallizes with a mixture of face-on and edge-on lamellar orientations on graphene compared to mainly edge-on on a silicon substrate. Moreover, whereas ultrathin (10 nm) P3HT films form well oriented face-on and edge-on lamellae, thicker (50 nm) films form a mosaic of lamellae oriented at different angles from the graphene substrate. This mosaic of crystallites with - stacking oriented homogeneously at various angles inside the film favors the creation of a continuous pathway of interconnected crystallites, and results in a strong enhancement in vertical charge transport and charge carrier mobility in the thicker P3HT film. These results provide a better understanding of polythiophene crystallization on graphene, and should help the design of more efficient graphene based organic devices by control of the crystallinity of the semiconducting film.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- graphene
- organic semiconductor
- P3HT
- crystallization
- charge transport
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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