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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sommer, Michael
Chemnitz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Meta-kinks are key to binder performance of poly(arylene piperidinium) ionomers for alkaline membrane water electrolysis using non-noble metal catalystscitations
- 2024Molecular-scale imaging enables direct visualization of molecular defects and chain structure of conjugated polymerscitations
- 2022Organogels from Diketopyrrolopyrrole Copolymer Ionene/Polythiophene Blends Exhibit Ground-State Single Electron Transfer in the Solid Statecitations
- 2020Glass transition temperature from the chemical structure of conjugated polymerscitations
- 2019Impact of Side Chains of Conjugated Polymers on Electronic Structure: A Case Studycitations
- 2019Effect of thionation on the performance of PNDIT2-based polymer solar cellscitations
- 2019Impact of side chains of conjugated polymers on electronic structure: a case studycitations
- 2018Tuning the Molecular Weight of the Electron Accepting Polymer in All-Polymer Solar Cellscitations
- 2018Drastic Improvement of Air Stability in an n-Type Doped Naphthalene-Diimide Polymer by Thionationcitations
- 2018Graphene exfoliation in the presence of semiconducting polymers for improved film homogeneity and electrical performancescitations
- 2018In Situ Synthesis of Ternary Block Copolymer/Homopolymer Blends for Organic Photovoltaicscitations
- 2018Impact of Acceptor Fluorination on the Performance of All-Polymer Solar Cellscitations
- 2017Polar Side Chains Enhance Processability, Electrical Conductivity, and Thermal Stability of a Molecularly p-Doped Polythiophenecitations
- 2017Unconventional Molecular Weight Dependence of Charge Transport in the High Mobility n-type Semiconducting Polymer P(NDI2OD-T2)citations
- 2017Signatures of Melting and Recrystallization of a Bulky Substituted Poly(thiophene) Identified by Optical Spectroscopycitations
- 2015High molecular weight mechanochromic spiropyran main chain copolymers via reproducible microwave-assisted Suzuki polycondensationcitations
- 2015High molecular weight mechanochromic Spiropyran main chain copolymers via reproducible microwave-assisted Suzuki polycondensationcitations
- 2013Hierarchical orientation of crystallinity by block-copolymer patterning and alignment in an electric fieldcitations
- 2013Crystallization-induced 10-nm structure formation in P3HT/PCBM blendscitations
- 2012Solvent additive control of morphology and crystallization in semiconducting polymer blendscitations
Places of action
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article
Unconventional Molecular Weight Dependence of Charge Transport in the High Mobility n-type Semiconducting Polymer P(NDI2OD-T2)
Abstract
<p>The charge transport and microstructural properties of five different molecular weight (MW) batches of the naphthalenediimide-thiophene copolymer P(NDI2OD-T2) are investigated. In particular, the field-effect transistor (FET) performance and thin-film microstructure of samples with MW varying from M<sub>n</sub> = 10 to 41 kDa are studied. Unlike conventional semiconducting polymers such as poly(3-hexylthiophene) where FET mobility dramatically drops with decreasing molecular weight, the FET mobility of P(NDI2OD-T2)-based transistors processed from 1,2-dichlorobenzene is found to increase with decreasing MW. Using a combination of grazing-incidence wide-angle X-ray scattering, near-edge X-ray absorption fine-structure spectroscopy, atomic force microscopy, and resonant soft X-ray scattering, the increase in FET mobility with decreasing MW is attributed to the pronounced increase in the orientational correlation length (OCL) with decreasing MW. In particular, the OCL is observed to systematically increase from <100 nm for the highest MW samples to ≈1 μm for the lowest MW samples. The improvement in OCL and hence mobility for low MW samples is attributed to the lack of aggregation of low MW chains in solution promoting backbone ordering, with the pre-aggregation of chains in 1,2-dichlorobenzene found to suppress longer-range liquid crystalline order.</p>