Session 11: Flexible Electronics Applications II
Inkjet-Printing of Optoelectronics Sensors
Wednesday, February 14, 2018
5:00 PM - 5:20 PM
Over the last 25 years, INO has been recognized as a leader in optics/photonics. Recently, printable photonics research activities have emerged based on INO’s solid expertise in the field of microfabrication and MEMS sensors. The fabrication of flexible multilayered optoelectronic devices has been addressed through state-of-the-art printing equipment combining inkjet and aerosol technologies, and including in-situ IR and UV post-treatment capabilities. Specific fabrication strategies have been used to carefully control deposition of layers from a broad range of functional inks on a wide variety of flexible substrates, for adequate sensor prototyping. In addition to the effects of jetting parameters, the influence of substrate wettability on drops coalescence forming a final percolated layer has been studied, supported by optical methods to quantify the percentage of surface coverage. The definition of critical feature dimensions of ~20μm width and ~10μm gap has also been achieved. This provides guidelines to further assess prototype fabrication towards future industrial scale-up manufacturing. Printable perovskite-based photodetector prototypes with a crystalline Methylammonium Lead Trihalide Perovskite ink layer sandwiched between HTL spiro and ETL TiO2 ink materials have been fabricated onto flexible polyimide substrates using various NIR and UV annealing means. The results of optoelectronics characterization from spectrally-calibrated I-V photocurrent measurements will be presented.
Martin Bolduc received a B.Sc. in Physics in 1998 and a Ph.D. in Materials Science from INRS-EMT (Montreal, Canada) in 2003 in the field of plasma physics and nanomaterials under an NSERC Scholarship. Martin worked as an NSERC Post-Doc Fellow from 2003-2005 in the fields of spintronics at SUNY-Albany / AlbanyNanotech (Albany, NY). His work has led to a US patent on the discovery of ferromagnetic silicon at room temperature and to a related paper published in Physical Review B that has been cited over 300 times so far. Martin also worked under a second Post-Doc Fellow from 2005-2006 in the field magnetooptics on silicon integrated optical isolators at MIT (Cambridge, MA). In 2006-2007, he worked as a consultant on an all-silicon laser in collaboration with Stocker Yale inc. (Montreal, Canada). He then obtained an NSERC Industrial R&D Fellowship from 2007-2009 at Tekna Plasma Systems Inc. (Sherbrooke, Canada). He is currently working at INO (Quebec City, Canada) since 2009. He was first enrolled in metamaterials and THz technologies for 3 years, and more recently on printable electronics and photonics materials and devices since 2012. During this period, he has received a Graduate Certificate in Printed Electronics and Functional Imaging from CalPoly (San Luis Obispo, CA) in 2015. Martin is Adjunct Professor at ÉTS Engineering School (Montreal, Canada) and member of the Advisory Board of IntelliFlex (formerly CPEIA Canadian Printable Electronics Industrial Association) since 2016. He is author/co-author of 58 publications and patents.
INO - National Optics Institute