NY CREATES Emerging Technologies Seminar
Thursday June 16, 2022 from 11:30am - 12:30pm
"Ultra-thin 2D Semiconductors for Next Generation Devices"
By Dr. Joan Redwing
Distinguished Professor, Materials Sci & Eng. and Elec. Eng., Penn State University
Zoom Pre-Registration required by June 15
Abstract: The field of two-dimensional (2D) materials encompasses a wide class of materials
that occur naturally as layered crystals. Within this class, semiconducting transition metal
dichalcogenides (TMDs) such as MoS2 and WSe2 have attracted significant interest in condensed
matter physics and next generation devices. At the single layer limit, TMDs exhibit direct band
gaps and retain good carrier mobility. Furthermore, different TMD layers can be stacked to create
unique heterostructures. Practical device applications, however, require large area single layer
TMD films which presents unique challenges. Our work has focused on the development of
metalorganic chemical vapor deposition for wafer-scale semiconducting TMDs. Applications of
large area TMD films in photonics and nanoelectronics will be highlighted.
Biography: Dr. Joan Redwing is a Distinguished Professor of Materials Science and Engineering
and Electrical Engineering at Penn State University. She serves as Director of the 2D Crystal
Consortium, an NSF Materials Innovation Platform (MIP) national user facility that is focused on
the synthesis of 2D materials for next generation devices. Her research focuses on crystal growth
and epitaxy of electronic materials, with an emphasis on thin film and nanomaterial synthesis by
metalorganic chemical vapor deposition. She is a fellow of the Materials Research Society, the
American Physical Society, and the American Association for the Advancement of Science. She is
an author on over 300 publications in refereed journals and holds 8 U.S. patents.