Ink-Based Semiconductors: From in situ Investigation to Autonomous Experimentation

Mar 12, 2020  |  4:00pm | ESB 1001
Dr. Aram Amassian
Associate Professor in the Materials Science and Engineering Department at North Carolina State University
Abstract

Semiconductor inks promise a new manufacturing paradigm for thin film (opto)electronics and photovoltaic materials and devices. Ink-based semiconductors include conjugated organic molecules, colloidal quantum dots and hybrid metal halide perovskites, all of which are making tremendous inroads in (opto)electronic and solar energy applications. The formation of solid-state materials is not well understood or controlled, especially in application-relevant processing conditions, which tend to be kinetically far-removed from equilibrium. Moreover, the chemical, structural and processing universe of these materials is vast, making it challenging to draw overarching design principals through traditional experimental approaches. In light of these challenges we have developed multi-modal in situ diagnostics techniques to help investigate and shed light on the mechanisms of ink-to-solid transformation of organic semiconductors and hybrid perovskite semiconductors and their impact on the operation and performance of semiconductor devices. More recent efforts have focused on tackling the vast chemical and processing universe of these materials, which demands implementation of machine learning strategies together with significant intensification of experiments toward implementation of a holistic co-design approach to inks, materials, processes and functional devices. This presentation will introduce students to these emerging materials, their solution deposition behavior through the perspective of in situ diagnostics approaches, and present our most recent efforts toward autonomous experimentation of ink-based semiconductors.

Biography

Aram Amassian is associate professor in the materials science and engineering and a member of the Organic and Carbon Electronics Laboratories (ORaCEL). He joined NC State University in summer 2018. Aram received his B.Eng. and PhD in Engineering Physics at the Ecole Polytechnique de Montreal in Canada and was NSERC postdoctoral fellow in the department of Materials Science and Engineering at Cornell University. He was founding faculty at the King Abdullah University of Science and Technology (KAUST) from 2009-2018. Dr. Amassian’s research interests are in the area of ink-based semiconductors, their processing, in situ characterization and (opto)electronic device applications. He has co-authored more than 180 publications in peer reviewed journals and was awarded the Career Development SABIC Chair for his work on solution processed optoelectronic materials.

HostProfessor Quyen NguyenEvent TypeSeminar