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Cellulose nanofiber thin-films as transparent and durable flexible substrates for electronic devices
Centre for Biocomposite and Biomaterials Processing, Graduate Department of Forestry, John H. Daniels Faculty of Architecture, Landscape and Design, University of Toronto, Toronto, ON M5S3E8, Canada.
Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S3G8, Canada.
Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S3G8, Canada.
Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S3G8, Canada.
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2021 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 197, article id 109274Article in journal (Refereed) Published
Abstract [en]

This work reports for the first time an exceptionally high thermal stability of cellulosic nanofibers films at 190 °C after a 5 h exposure, a threshold required for their design and manufacturing in flexible electronic devices. A long-term durability validation of a flexible cellulose nanofiber over a period of 10 years exposure under ambient condition validated their life-span over a long period of operating condition. Arresting quinoid oxidative reactions pathways and thermal degradation of lignin or lignin-less cellulose are demonstrated to be two fundamental routes to enhance thermal processing of cellulose nanofiber substrates and to achieve long service life of energy devices made from them. One of the main highlights of this work is the first time validation of a long operating service life for a light-emitting device made from a cellulose nanofibers substrate, while continuously illuminating the fabricated prototype under ambient condition for an equivalent of 10 years. The unique durability of this flexible substrate will have potential applications in flexible lighting, energy and sensing devices. © 2020 The Authors

Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 197, article id 109274
Keywords [en]
Cellulose, Cellulose films, Cellulose nanocrystals, Durability, Electron devices, Electronics industry, Light emission, Lignin, Nanocellulose, Nanofibers, Thermodynamic stability, Thermoelectric equipment, Ambient conditions, Cellulose nanofibers, Flexible electronic devices, High thermal stability, Light emitting devices, Long term durability, Operating condition, Oxidative reaction, Substrates, Ambient Conditions, Cellulose, Durability, Exposure, Service Life, Substrates, Work
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-81450DOI: 10.1016/j.matdes.2020.109274ISI: 000595169400001Scopus ID: 2-s2.0-85095420021OAI: oai:DiVA.org:ltu-81450DiVA, id: diva2:1502104
Note

Validerad;2020;Nivå 2;2020-11-19 (johcin)

Available from: 2020-11-19 Created: 2020-11-19 Last updated: 2023-09-05Bibliographically approved

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Oksman, Kristiina

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