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Anisotropic optical behavior of an amorphous organic polymer locally aligned by inkjet-printing

The molecular arrangement of polymeric organic semiconductors alter the macroscopic optoelectronic properties of the material. Most existing solution-based deposition methods are however, limited in both resolution as well as pattern design and often result in molecular disorder upon drying. Here, a...

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Main Authors: Lindberg, Frida (Author) , Synnatschke, Kevin (Author) , Rödlmeier, Tobias (Author) , Brenner, Philipp (Author) , Krings, Maximilian (Author) , Dietl, Martin C. (Author) , Lemmer, Uli (Author) , Backes, Claudia (Author) , Hernandez-Sosa, Gerardo (Author)
Format: Article (Journal)
Language:English
Published: 18 February 2021
In: Progress in organic coatings
Year: 2021, Volume: 154, Pages: 1-8
DOI:10.1016/j.porgcoat.2021.106184
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.porgcoat.2021.106184
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0300944021000552
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Author Notes:Frida W. Lindberg, Kevin Synnatschke, Tobias Rödlmeier, Philipp Brenner, Maximilian Krings, Martin C. Dietl, Uli Lemmer, Claudia Backes, Gerardo Hernandez-Sosa
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Summary:The molecular arrangement of polymeric organic semiconductors alter the macroscopic optoelectronic properties of the material. Most existing solution-based deposition methods are however, limited in both resolution as well as pattern design and often result in molecular disorder upon drying. Here, a method for aligning the amorphous polymer polyindenofluoren-8-triarylamine (PIF8-TAA) via inkjet printing is presented. By tuning the printing speed and including different amounts of the solid solvent crystallization agent 1,3,5-trichlorobenzene (TCB), fibrous structures with varying morphology can be fabricated. The resulting optical properties are analyzed using photoluminescence and Raman spectroscopy. The findings show an optical anisotropic behavior dependent on the fiber size and alignment. This is likely caused by the increased molecular arrangement within the structures. Methods enabling tailored structuring of the molecular arrangement in a material, provide the possibility to develop novel applications, as well as to optimize existing devices with improved properties such as, charge carrier transport and emission efficiency.
Item Description:Gesehen am 12.06.2021
Physical Description:Online Resource
DOI:10.1016/j.porgcoat.2021.106184

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