| People | Locations | Statistics |
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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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Li, Ruipeng
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Using spatial confinement to decipher polymorphism in the organic semiconductor p-DTS(FBTTh2)2citations
- 2023Synergistic Role of Water and Oxygen Leads to Degradation in Formamidinium-Based Halide Perovskites
- 2023Synergistic Role of Water and Oxygen Leads to Degradation in Formamidinium-Based Halide Perovskitescitations
- 2023Solvent and A-Site Cation Control Preferred Crystallographic Orientation in Bromine-Based Perovskite Thin Films
- 2023Hexanary blends: a strategy towards thermally stable organic photovoltaicscitations
- 2020Moisture-Induced Crystallographic Reorientations and Effects on Charge Carrier Extraction in Metal Halide Perovskite Solar Cellscitations
- 2019Managing local order in conjugated polymer blends via polarity contrastcitations
- 2017Programmable and coherent crystallization of semiconductors.citations
- 2017Hybrid perovskite solar cells: In situ investigation of solution-processed PbI2 reveals metastable precursors and a pathway to producing porous thin filmscitations
- 2016Hybrid Perovskite Thin-Film Photovoltaics: In Situ Diagnostics and Importance of the Precursor Solvate Phasescitations
- 2015Semi-metallic, strong and stretchable wet-spun conjugated polymer microfiberscitations
- 2015Solution-printed organic semiconductor blends exhibiting transport properties on par with single crystalscitations
- 2014One-dimensional self-confinement promotes polymorph selection in large-area organic semiconductor thin filmscitations
- 2011Nanocomposite characterization on multiple length scales using μSAXScitations
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article
One-dimensional self-confinement promotes polymorph selection in large-area organic semiconductor thin films
Abstract
A crystal's structure has significant impact on its resulting biological, physical, optical and electronic properties. In organic electronics, 6,13(bis-triisopropylsilylethynyl)pentacene (TIPS-pentacene), a small-molecule organic semiconductor, adopts metastable polymorphs possessing significantly faster charge transport than the equilibrium crystal when deposited using the solution-shearing method. Here, we use a combination of high-speed polarized optical microscopy, in situ microbeam grazing incidence wide-angle X-ray-scattering and molecular simulations to understand the mechanism behind formation of metastable TIPS-pentacene polymorphs. We observe that thin-film crystallization occurs first at the air-solution interface, and nanoscale vertical spatial confinement of the solution results in formation of metastable polymorphs, a one-dimensional and large-area analogy to crystallization of polymorphs in nanoporous matrices. We demonstrate that metastable polymorphism can be tuned with unprecedented control and produced over large areas by either varying physical confinement conditions or by tuning energetic conditions during crystallization through use of solvent molecules of various sizes. © 2014 Macmillan Publishers Limited.