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Micrometer‐Thin Nanocellulose Foils for 3D Organic Electronics
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fiberprocesser. Deutsches Elektronen Synchrotron DESY Notkestraße 85 22607 Hamburg Germany.ORCID iD: 0000-0001-6465-2188
Deutsches Elektronen Synchrotron DESY Notkestraße 85 22607 Hamburg Germany;Institute of Nanostructure and Solid State Physics (INF) Hamburg Advanced Research Centre for Bioorganic Chemistry Universität Hamburg Luruper Chaussee 149 22761 Hamburg Germany.
Deutsches Elektronen Synchrotron DESY Notkestraße 85 22607 Hamburg Germany.
Deutsches Elektronen Synchrotron DESY Notkestraße 85 22607 Hamburg Germany;Institute for X‐ray Physics Goettingen University Friedrich Hund Platz 1 37077 Goettingen Germany.
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2024 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 34, no 40Article in journal (Refereed) Published
Abstract [en]

Cellulose is a natural polymer with great properties such as high optical transparency and mechanical strength, flexibility, and biodegradability. Hence, cellulose-based foils are suitable for the replacement of synthetic polymers as substrate materials in organic electronics. This article reports the fabrication of ultrathin, free-standing cellulose foils by spraying aqueous 2,2,6,6-tetramethylpiperidine-1-oxyl-nanocellulose (TEMPO) fibrils ink layer-by-layer on a hot substrate using a movable spray nozzle. The resulting foils are only 2 ± 1 µm in thickness with an average basis weight of 1.9 g m−2, which ranges in the same scale as the world's thinnest paper. The suitability of these ultra-thin nanocellulose foils as a sustainable substrate material for organic electronic applications is demonstrated by testing the foils resistance against organic solvents. Furthermore, silver nanowires (AgNWs) and the blend poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) are integrated into the foils, and the foils are molded into 3D paper structures in order to create conductive, paper-based building blocks for organic electronics.

Place, publisher, year, edition, pages
Wiley , 2024. Vol. 34, no 40
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-355997DOI: 10.1002/adfm.202403952ISI: 001227250700001Scopus ID: 2-s2.0-85193521275OAI: oai:DiVA.org:kth-355997DiVA, id: diva2:1911348
Funder
German Research Foundation (DFG), EXC 2089/1–390776260
Note

QC 20241107

Available from: 2024-11-07 Created: 2024-11-07 Last updated: 2024-11-07Bibliographically approved
In thesis
1. Utilizing Spray Coating for the Fabrication of Organic Electronics
Open this publication in new window or tab >>Utilizing Spray Coating for the Fabrication of Organic Electronics
2024 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The present thesis explores the utilization of spray coating for the sustainable fabrication of cellulose-based organic electronics in the framework of four different studies. The scope of this work is to contribute to the ongoing green transformation of our society in the context of industrial processing, responsible production, and clean energy. In this regard, spray coating was applied as a low-cost, fast, and industrially relevant technique for both the production as well as the quality enhancement of functional organic polymer films. In addition to that, wood-based nanocellulose, a non-toxic and biodegradable polymer, was used to replace synthetic polymers as transparent, flexible matrix- and substrate material, and as dispersing agent for the fabrication of highly conductive electrodes. Finally, spray solvents were evaluated regarding their sustainability, industrial fitness, and thus suitability for the large-scale production of organic electronics. In the course of this, various kinds of functional, hybrid organic films and foils were fabricated. Their properties were correlated with their respective structure and morphology, with a special focus on surface-sensitive analysis techniques, namely grazing incidence X-ray scattering, atomic force microscopy, scanning electron microscopy, and sheet resistance measurements.

Abstract [sv]

Den här avhandlingen undersöker användningen av spraybeläggning för en hållbar produktion av cellulosabaserade, organiska elektronik inom ramen för fyra olika studier. Syftet med detta arbete är att bidra till den pågående gröna omvandlingen av vårt samhälle inom ramen för industriell bearbetning, ansvarsfull produktion och ren energi.I avhandlingen studeras spraybeläggning som en billig, snabb och industriellt relevant teknik för både produktion och kvalitetsförbättring av funktionella, organiska polymerfilmer. Utöver detta undersöks träbaserad nanocellulosa, en giftfri och biologiskt nedbrytbar polymer, för att ersätta syntetiska polymerer som genomskinligt, flexibelt matris- och substratmaterial samt som dispergeringsmedel vid tillverkning av högkonduktiva elektroder. Slutligen utvärderas spraylösningsmedel utifrån hållbarhet, industriell användbarhet och därmed lämplighet för storskalig produktion av organisk elektronik. Under arbetets gång har olika typer av funktionella, hybrida organiska filmer och folier tillverkats. Deras egenskaper kan kopplas till deras struktur och morfologi, med hjälp av ytkänsliga analysmetoder, nämligen röntgenspridning vid låg infallsvinkel, atomkraftsmikroskopi och svepelektronmikroskopi.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2024. p. 93
Series
TRITA-CBH-FOU ; 51
Keywords
Spray Coating, Sustainability, Cellulose Nanofibrils, Organic Electronics, X-ray Scattering, Spraybeläggning, Hållbarhet, Cellulosa Nanofibriller, Organisk Elektronik, Röntgenspridning
National Category
Polymer Chemistry Paper, Pulp and Fiber Technology Materials Chemistry Composite Science and Engineering
Research subject
Fibre and Polymer Science
Identifiers
urn:nbn:se:kth:diva-355998 (URN)978-91-8106-105-5 (ISBN)
Public defence
2024-12-11, F3, Lindstedtsvägen 26, https://kth-se.zoom.us/j/68612966196, Stockholm, 14:00 (English)
Opponent
Supervisors
Note

QC 20241112

Embargo t.o.m. 2025-12-11 godkänt av skolchef Amelie Eriksson Karlström via e-post 2024-12-03

Available from: 2024-11-12 Created: 2024-11-07 Last updated: 2026-01-28Bibliographically approved

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Betker, MarieKurmanbay, AlisherAlon, YamitSöderberg, DanielRoth, Stephan V.

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