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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
Hierarchical orientation of crystallinity by block-copolymer patterning and alignment in an electric field
Abstract
Electron and hole conducting 10-nm-wide polymer morphologies hold great promise for organic electro-optical devices such as solar cells and light emitting diodes. The self-assembly of block-copolymers (BCPs) is often viewed as an efficient way to generate such materials. Here, a functional block copolymer that contains perylene bismide (PBI) side chains which can crystallize via π–π stacking to form an electron conducting microphase is patterned harnessing hierarchical electrohydrodynamic lithography (HEHL). HEHL film destabilization creates a hierarchical structure with three distinct length scales: (1) micrometer-sized polymer pillars, containing (2) a 10-nm BCP microphase morphology that is aligned perpendicular to the substrate surface and (3) on a molecular length scale (0.35–3 nm) PBI π–π-stacks traverse the HEHL-generated plugs in a continuous fashion. The good control over BCP and PBI alignment inside the generated vertical microstructures gives rise to liquid-crystal-like optical dichroism of the HEHL patterned films, and improves the electron conductivity across the film by 3 orders of magnitude.