Oana Jurchescu1
Wake Forest University1
Electronic devices with various functionalities are now integrated into all aspects of our lives, they impact large industries and keep us connected even during the worst pandemic lockdowns. New products promise to expand this reach ever further and to transform the way we interact with electronics, but they first need to reach the necessary standards in performance and stability. The development of processing techniques that can address the manufacturability/scalability/sustainability/performance balance represents the next key step in the integration of these materials into next-generation electronic devices. In this presentation, I will introduce an environment-friendly printing process that enables a rapid, scalable and low-cost manufacturing technique for deposition and patterning of electronic materials on flexible substrates. This solvent-free method relies on laser printing and it is compatible with flexible substrates, thus exploiting the advantages of printing, but eliminating the need of hazardous solvents typically used for printed electronics. I will discuss this method in the context of manufacturing organic semiconductor and hybrid halide perovskite devices and compare the structural and electrical properties with those of similar devices obtained from standard solution-based deposition methods.<sup>1-3</sup> While the performance of highly optimized devices is on par with the best obtained for the materials of focus, the lack of uniformity is a serious drawback that needs to be addressed next in the laser printing of functional materials for optoelectronic devices.<br/>1. Peter J. Diemer, Angela F. Harper, Muhammad R. Niazi, Anthony J. Petty II, John E. Anthony, Aram Amassian, and Oana D. Jurchescu, Laser-Printed Organic Thin-Film Transistors, Adv. Mater. Technol. 2 (11), 1700167 (2017).<br/>2. Angela F. Harper, Peter J. Diemer, and Oana D. Jurchescu, Contact patterning by laser printing for flexible electronics on paper, npj Flexible electronics 3, 11 (2019).<br/>3. Colin Tyznik, Zachary A. Lamport, Jeni Sorli, David Becker-Koch, Yana Vaynzof, Yueh-Lin Loo and Oana D. Jurchescu, Laser Printed Metal Halide Perovskites, J. Phys. Mater. 3, 034010 (2020).