Thermoconformational Behavior of Cellulose Nanofiber Films as a Device Substrate and Their Superior Flexibility and Durability to Glass
- Viktoriya PakharenkoViktoriya PakharenkoCenter 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, CanadaMore by Viktoriya Pakharenko
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- Sankha MukherjeeSankha MukherjeeDepartment of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto M5S3E4, CanadaDepartment of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, IndiaMore by Sankha Mukherjee
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- Otavio Augusto Titton DiasOtavio Augusto Titton DiasCenter 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, CanadaMore by Otavio Augusto Titton Dias
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- Crystal WuCrystal WuCenter 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, CanadaMore by Crystal Wu
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- Joseph ManionJoseph ManionDepartment of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S3H6, CanadaMore by Joseph Manion
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- Chandra Veer SinghChandra Veer SinghDepartment of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto M5S3E4, CanadaMore by Chandra Veer Singh
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- Dwight SeferosDwight SeferosDepartment of Chemistry, University of Toronto, 80 St. George Street, Toronto M5S3H6, CanadaMore by Dwight Seferos
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- Jimi TjongJimi TjongDepartment of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto M5S3G8, CanadaMore by Jimi Tjong
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- Kristiina OksmanKristiina OksmanDepartment of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto M5S3G8, CanadaDivision of Materials Science, Luleå University of Technology, Luleå 97187, SwedenMore by Kristiina Oksman
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- Mohini Sain*Mohini Sain*Email: [email protected]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, CanadaDepartment of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto M5S3G8, CanadaMore by Mohini Sain
Abstract
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.
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