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Micropatterning of organic electronic materials using a facile aqueous photolithographic process
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-5154-0291
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2799-3490
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2018 (English)In: AIP Advances, ISSN 2158-3226, E-ISSN 2158-3226, Vol. 8, no 10, article id 105116Article in journal (Refereed) Published
Abstract [en]

Patterning organic semiconductors via traditional solution-based microfabrication techniques is precluded by undesired interactions between processing solvents and the organic material. Herein we show how to avoid these problems easily and introduce a simple lift-off method to pattern organic semiconductors. Positive tone resist is deposited on the substrate, followed by conventional exposure and development. After deposition of the organic semiconductor layer, the remaining photoresist is subjected to a flood exposure, rendering it developable. Lift-off is then performed using the same aqueous developer as before. We find that the aqueous developers do not compromise the integrity of the organic layer or alter its electronic performance. We utilize this technique to pattern four different organic electronic materials: epindo-lidione (EPI), a luminescent semiconductor, p-n photovoltaic bilayers of metal-free phthalocyanine and N, N-dimethyltetracarboxylic diimide, and finally the archetypical conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT). The result of our efforts is a facile method making use of well-established techniques that can be added to the toolbox of research and industrial scientists developing organic electronics technology. (c) 2018 Author(s).

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2018. Vol. 8, no 10, article id 105116
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-152828DOI: 10.1063/1.5052221ISI: 000448957900130OAI: oai:DiVA.org:liu-152828DiVA, id: diva2:1265228
Conference
21st International Conference on Magnetism (ICM)
Note

Funding Agencies|Swedish Foundation for Strategic Research (SSF); Knut and Alice Wallenberg Foundation within the Wallenberg Centre for Molecular Medicine at Linkoping University

Available from: 2018-11-22 Created: 2018-11-22 Last updated: 2019-03-07

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