Photonic Processing of Printable Optoelectronic Device Materials for Flexible Hybrid Electronics (FHE) Applications

In this work, we present our recent progress on rapid photonic processing in the fabrication of printable and flexible hybrid electronic (FHE) devices and circuits. The pulsed photonic irradiation utilizes microseconds to milliseconds processing time onto thin flexible polymer or paper-based substrates, which suffer from low glass-transition temperatures. These new processing technologies show great promise in maintaining the integrity of the substrates without structural degradation due to shrinkage, charring or decomposition.<br/><br/>We will present flash-lamp [1-2] and laser [3] sintering experiments that show optimized sheet resistance values for silver and copper inks printed onto PET and SBS paper obtained at very high speed and spatial precision in comparison with conventional oven annealing. In addition, the results will show how these techniques can provide a greater control over the optoelectronic material properties in the fabrication of perovskite-based devices [4].<br/><br/>[1] B.N. Altay, B. Aksoy, D. Banerjee, D. Maddipatla, P.D. Fleming, M. Bolduc, S.G. Cloutier, and M. Demir, Lignin-Derived Carbon-Coated Functional Paper for Printed Electronics, ACS Applied Electronic Materials 3 (2021) 3904.<br/>[2] B.N. Altay, V.S. Turkani, A.P. Pekarovicova, P.D. Fleming, M.Z. Atashbar, M. Bolduc, S.G. Cloutier, “One-step photonic curing of screen-printed conductive Ni flake electrodes for flexible electronics”, Scientific Reports 11 (2021) 3393.<br/>[3] M. Bolduc, C. Trudeau, P. Beaupré, S.G. Cloutier and P. Galarneau, “Thermal Dynamic Effects using Pulse-Shaping Laser Sintering of Printed Silver Inks”, Scientific Report 8 (2018) 1418.<br/>[4] C. Trudeau, P. Beaupré, M. Bolduc, and S.G. Cloutier, All inkjet-printed perovskite-based bolometers, NPJ Flexible Electronics 4 (2021) 34.