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Thermoconformational Behavior of Cellulose Nanofiber Films as a Device Substrate and Their Superior Flexibility and Durability to Glass
Center for Biocomposites and Biomaterials Processing, Graduate Department of Forestry, John H. Daniels Faculty of Architecture, Landscape and Design, University of Toronto, 33 Willcocks Street, Toronto M5S3E8, Canada.
Department of Materials Science and Engineering, University of Toronto, Toronto M5S3E4, Canada; Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India.
Center for Biocomposites and Biomaterials Processing, Graduate Department of Forestry, John H. Daniels Faculty of Architecture, Landscape and Design, University of Toronto, Toronto M5S3E8, Canada.
Center for Biocomposites and Biomaterials Processing, Graduate Department of Forestry, John H. Daniels Faculty of Architecture, Landscape and Design, University of Toronto, Toronto M5S3E8, Canada.
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2021 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 13, no 34, p. 40853-40862Article in journal (Refereed) Published
Abstract [en]

The design and high-throughput manufacturing of thin renewable energy devices with high structural and atomic configurational stability are crucial for the fabrication of green electronics. Yet, this concept is still in its infancy. In this work, we report the extraordinary durability of thin molecular interlayered organic flexible energy devices based on chemically tuned cellulose nanofiber transparent films that outperform glass by decreasing the substrate weight by 50%. The nanofabricated flexible thin film has an exceptionally low thermal coefficient of expansion of 1.8 ppm/K and a stable atomic configuration under a harsh fabrication condition (over 190 °C for an extended period of 5 h). A flexible optoelectronic device using the same renewable cellulose nanofiber film substrate was found to be functionally operational over a life span of 5 years under an intermittent operating condition. The success of this device’s stability opens up an entirely new frontier of applications of flexible electronics. 

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2021. Vol. 13, no 34, p. 40853-40862
Keywords [en]
conformationally tuned cellulose nanofiber, sustainable electronics, hydrogen bond length, dihedral angles, flexible substrate
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-86773DOI: 10.1021/acsami.1c10589ISI: 000693050200064PubMedID: 34403248Scopus ID: 2-s2.0-85114103118OAI: oai:DiVA.org:ltu-86773DiVA, id: diva2:1586468
Note

Validerad;2021;Nivå 2;2021-09-02 (alebob)

Available from: 2021-08-20 Created: 2021-08-20 Last updated: 2023-09-05Bibliographically approved

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Oksman, Kristiina

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