Unraveling the Unconventional Order of a High-Mobility Indacenodithiophene-Benzothiadiazole Copolymer.

Autor: Cendra C; Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States., Balhorn L; Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States., Zhang W; Physical Science and Engineering Division KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia., O'Hara K; Materials Department, University of California-Santa Barbara, Santa Barbara, California 93106, United States., Bruening K; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States., Tassone CJ; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States., Steinrück HG; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States.; Department Chemie, Universität Paderborn, 33098 Paderborn, Germany., Liang M; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States., Toney MF; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States.; Department of Chemical and Biological Engineering, University of Colorado-Boulder, Boulder, Colorado 80303, United States., McCulloch I; Physical Science and Engineering Division KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.; Department of Chemistry, University of Oxford, Oxford OX1 3TA, United Kingdom., Chabinyc ML; Materials Department, University of California-Santa Barbara, Santa Barbara, California 93106, United States., Salleo A; Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States., Takacs CJ; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States.
Jazyk: angličtina
Zdroj: ACS macro letters [ACS Macro Lett] 2021 Oct 19; Vol. 10 (10), pp. 1306-1314. Date of Electronic Publication: 2021 Oct 05.
DOI: 10.1021/acsmacrolett.1c00547
Abstrakt: A new class of donor-acceptor (D-A) copolymers found to produce high charge carrier mobilities competitive with amorphous silicon (>1 cm 2 V -1 s -1 ) exhibit the puzzling microstructure of substantial local order, however lacking long-range order and crystallinity previously deemed necessary for achieving high mobility. Here, we demonstrate the application of low-dose transmission electron microscopy to image and quantify the nanoscale and mesoscale organization of an archetypal D-A copolymer across areas comparable to electronic devices (≈9 μm 2 ). The local structure is spatially resolved by mapping the backbone (001) spacing reflection, revealing nanocrystallites of aligned polymer chains throughout nearly the entire film. Analysis of the nanoscale structure of its ordered domains suggests significant short- and medium-range order and preferential grain boundary orientations. Moreover, we provide insights into the rich, interconnected mesoscale organization of this new family of D-A copolymers by analysis of the local orientational spatial autocorrelations.
Databáze: MEDLINE
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