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Challenges and Strategies to Integrate Dissimilar Materials
Julia W.P. Hsu
Professor of Materials Science and Engineering at the University of Texas, Dallas
Abstract: Modern devices ubiquitously consist of materials with very different structures and properties, e.g., metal with organics or oxides with plastics. However, a fundamental scientific understanding of materials' interactions at these interfaces is still in its infancy. I will highlight some surprising interactions at the interfaces between dissimilar materials. In this talk, I will discuss three examples of integrating dissimilar materials: 1) doping in the active layers in organic photovoltaics induced by charge transfer to MoO3 hole transport layer; 2) change in halide perovskite degradation pathways when in contact with metal oxides; 3) challenges of synthesizing inorganic thin films on plastic substrates. Understanding these complex material interfaces will lay the groundwork to control and manipulate them, expanding the frontier for next-generation materials and devices.
Bio: Julia W.P. Hsu is Professor of Materials Science and Engineering at the University of Texas at Dallas and holds the Texas Instruments Distinguished Chair in Nanoelectronics. She received her B.S.E. degree from Princeton University in Chemical Engineering and M.S. and Ph.D. degrees from Stanford University in Physics. She previously worked at the University of Virginia, Bell Labs, and Sandia National Laboratories. Dr. Hsu is a winner of a Hertz Foundation Fellowship, the American Physical Society Apker Award, a National Science Foundation Young Investigator Award, and a Sloan Foundation Research Fellowship. Her work has covered diverse fields of materials, including superconductors, epitaxial inorganic semiconducting films, metal oxides, polymer and organic semiconductors, and organic-inorganic halide perovskites for energy, environment, and electronic applications. Much of her research revolves around electronic structures, electrical transport, and chemical reactions at the interfaces of dissimilar materials. Her current research focuses on solution synthesis of binary and complex oxides for photovoltaics, environmental catalysis, and flexible electronics. Additionally, she is exploring thin-film synthesis using intense pulsed light that will facilitate high-throughput and low-energy manufacturing. Dr. Hsu is a Fellow of the American Physical Society (APS), the American Association for the Advancement of Science (AAAS), and the Materials Research Society (MRS). She served on the MRS Board of Director and as MRS Treasurer, Member-at-large on the APS Division of Materials Physics, and is currently a member of DOE's Basic Energy Sciences Advisory Committee and of several review panels for the National Academies.