Abstract:
Our society is faced with an increasing challenge of E-waste and with the proliferation of the internet of things and smart packaging this is only going to get worse. Low cost printed electronics, are facilitating the development of emerging technologies from artificial skin to stretchable and bendable cell phone displays. The desire to integrate these materials onto biodegradable substrates or to use compostable active materials is necessary. Furthermore, the chemical toolbox available to us enables the fine-tuning of the materials to design and engineer the desired properties. This seminar will cover our groups recent advances in 1) the simple fabrication of semiconductive single walled carbon nanotube transistors on high performing green dielectrics;[1,2], 2) advances towards the development of biodegradable and flexible transparent heaters [3,4] and 3) the use phthalocyanines as low cost semiconductors for the development of point-of-source sensors such as cannabinoid detection and speciation [5,6]. We aim to build structure property relationships between material design, thin film processing and device performance for the enabling of sustainable next-generation electronics.
[1] ACS Appl. Mater. & Interfaces, 2023, 15, 2, 3680-3688. [2] Adv. Mater. Interfaces, 2023, 10, 14, 2300079. [3] Flexible Printed Electron. 2023, 8, 2. [4] Adv. Mater. Technologies. 2022, 7, 9, 2200037.
[5] Adv. Funct. Mater., 2022, 32, 7, 2107138. [6] Commun. Chem. 2022, 5, 178.
Bio:
In 2015, Lessard joined the Department of Chemical & Biological Engineering at u Ottawa as an Assistant Professor, was promoted to Associate Professor in May 2019 and Cross Appointed to the School of Electrical Engineering and Computer Science in 2020. He was awarded the Tier 2 Canada Research Chair in Advanced Polymer Materials and Organic Electronics (renewed in 2020), 2018 Ontario Early Researcher Award, the 2015 Charles Polanyi Prize in Chemistry, The University of Ottawa Early Career Researcher of the Year Awards for 2021, the 2021 Chemical Engineering Innovation award (under 40), 2022 The Canadian Journal of Chemical Engineering Lectureship award and NOVA Chemicals MSED Early Career Investigator Award. Prof. Lessard was also named a 2018 J. Mater. Chem. C Emerging Researcher (RSC), Flexible and Printed Electronics Emerging Leaders of 2023 (IOPscience) and 2023 "Small" Nano Micro Rising Star (Wiley Journals).
Since 2008, Prof. Lessard has published 147 peer reviewed journal articles, 16 patent applications, and presented his work over 150 times at international and national conferences. Lessard is co-founder of Ekidna Sensing inc, a spinoff company based on cannabinoid sensors. Prior to joining uOttawa, Prof. Lessard completed an NSERC Banting Fellowship at the University of Toronto studying crystal engineering and OPV/OLED fabrication and obtained his PhD (2012) from McGill University in Polymer reaction engineering. For more info: www.benoitlessard.com