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1.
PAPER CURRENT
Publication Date: 2013-01-11
Description: Organic LettersDOI: 10.1021/ol303214j
Print ISSN: 1523-7060
Electronic ISSN: 1523-7052
Topics: Chemistry and Pharmacology
2.
PAPER CURRENT
Publication Date: 2012-10-19
Description: Author(s): Gert-Jan A. H. Wetzelaer, Martijn Kuik, Yoann Olivier, Vincent Lemaur, Jérôme Cornil, Simone Fabiano, Maria Antonietta Loi, and Paul W. M. Blom Electron- and hole-transport properties of the n-type copolymer poly{[N,N′-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-dithiophene)} [P(NDI2OD-T2), PolyeraActivInk™ N2200] are investigated. Electron- and hole-only devices with Ohmic contacts are demonstrated, ... [Phys. Rev. B 86, 165203] Published Thu Oct 18, 2012
Keywords: Semiconductors I: bulk
Print ISSN: 1098-0121
Electronic ISSN: 1095-3795
Topics: Physics
3.
PAPER CURRENT
Toward Single Crystal Thin Films of Terthiophene by Directional Crystallization Using a Thermal Gradient (2011)
Publication Date: 2011-07-15
Description: Crystal Growth & DesignDOI: 10.1021/cg2007793
Print ISSN: 1528-7483
Electronic ISSN: 1528-7505
Topics: Chemistry and Pharmacology , Geosciences , Physics
4.
PAPER CURRENT
Origin of the different transport properties of electron and hole polarons in an ambipolar polyselenophene-based conjugated polymer (2011)
Publication Date: 2011-09-28
Description: Author(s): Zhuoying Chen, Matthew Bird, Vincent Lemaur, Guillaume Radtke, Jérôme Cornil, Martin Heeney, Iain McCulloch, and Henning Sirringhaus Understanding the mechanisms limiting ambipolar transport in conjugated polymer field-effect transistors (FETs) is of both fundamental and practical interest. Here, we present a systematic study comparing hole and electron charge transport in an ambipolar conjugated polymer, semicrystalline poly(3,3... [Phys. Rev. B 84, 115211] Published Tue Sep 27, 2011
Keywords: Semiconductors I: bulk
Print ISSN: 1098-0121
Electronic ISSN: 1095-3795
Topics: Physics
5.
PAPER CURRENT
Publication Date: 2014-11-05
Description: Nature advance online publication 05 November 2014. doi:10.1038/nature13854 Authors: Deepak Venkateshvaran, Mark Nikolka, Aditya Sadhanala, Vincent Lemaur, Mateusz Zelazny, Michal Kepa, Michael Hurhangee, Auke Jisk Kronemeijer, Vincenzo Pecunia, Iyad Nasrallah, Igor Romanov, Katharina Broch, Iain McCulloch, David Emin, Yoann Olivier, Jerome Cornil, David Beljonne & Henning Sirringhaus Conjugated polymers enable the production of flexible semiconductor devices that can be processed from solution at low temperatures. Over the past 25 years, device performance has improved greatly as a wide variety of molecular structures have been studied. However, one major limitation has not been overcome; transport properties in polymer films are still limited by pervasive conformational and energetic disorder. This not only limits the rational design of materials with higher performance, but also prevents the study of physical phenomena associated with an extended π-electron delocalization along the polymer backbone. Here we report a comparative transport study of several high-mobility conjugated polymers by field-effect-modulated Seebeck, transistor and sub-bandgap optical absorption measurements. We show that in several of these polymers, most notably in a recently reported, indacenodithiophene-based donor–acceptor copolymer with a near-amorphous microstructure, the charge transport properties approach intrinsic disorder-free limits at which all molecular sites are thermally accessible. Molecular dynamics simulations identify the origin of this long sought-after regime as a planar, torsion-free backbone conformation that is surprisingly resilient to side-chain disorder. Our results provide molecular-design guidelines for ‘disorder-free’ conjugated polymers.
Print ISSN: 0028-0836
Electronic ISSN: 1476-4687
Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
6.
PAPER CURRENT
Publication Date: 2014-11-20
Description: Approaching disorder-free transport in high-mobility conjugated polymers Nature 515, 7527 (2014). doi:10.1038/nature13854 Authors: Deepak Venkateshvaran, Mark Nikolka, Aditya Sadhanala, Vincent Lemaur, Mateusz Zelazny, Michal Kepa, Michael Hurhangee, Auke Jisk Kronemeijer, Vincenzo Pecunia, Iyad Nasrallah, Igor Romanov, Katharina Broch, Iain McCulloch, David Emin, Yoann Olivier, Jerome Cornil, David Beljonne & Henning Sirringhaus Conjugated polymers enable the production of flexible semiconductor devices that can be processed from solution at low temperatures. Over the past 25 years, device performance has improved greatly as a wide variety of molecular structures have been studied. However, one major limitation has not been overcome; transport properties in polymer films are still limited by pervasive conformational and energetic disorder. This not only limits the rational design of materials with higher performance, but also prevents the study of physical phenomena associated with an extended π-electron delocalization along the polymer backbone. Here we report a comparative transport study of several high-mobility conjugated polymers by field-effect-modulated Seebeck, transistor and sub-bandgap optical absorption measurements. We show that in several of these polymers, most notably in a recently reported, indacenodithiophene-based donor–acceptor copolymer with a near-amorphous microstructure, the charge transport properties approach intrinsic disorder-free limits at which all molecular sites are thermally accessible. Molecular dynamics simulations identify the origin of this long sought-after regime as a planar, torsion-free backbone conformation that is surprisingly resilient to side-chain disorder. Our results provide molecular-design guidelines for ‘disorder-free’ conjugated polymers.
Print ISSN: 0028-0836
Electronic ISSN: 1476-4687
Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics

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