CHEE Seminar: Song Jin
Monday, November 7, 2022 – 3:00 p.m.
Song Jin
Francis J. DiSalvo Professor of Physical Science
Department of Chemistry & Materials Science and Engineering
University of Wisconsin-Madison
“Metal Halide Perovskite Nanostructures and Heterostructures: Fundamental Studies and Potential Applications”
Harvill Bldg., Room 305
Social Hour immediately following the seminar in Old Engineering 157 (Graduate Student Lounge) at 4:00 p.m.
ABSTRACT
Metal halide perovskites are inexpensive semiconductor materials promising for high-performance solar cells and light-emitting diodes (LEDs) because they are easy to synthesize and tolerant of defects. A fundamental understanding of the factors controlling the carrier transfer mechanisms in heterostructures of halide perovskites is crucial for guiding the synthetic strategies to improve properties and device applications. Dr. Jin has developed new methods for synthesizing nanostructures of both three-dimensional (3D) perovskites and two-dimensional (2D) Ruddlesden–Popper (RP) layered perovskites, and using them to create novel and arbitrary heterostructures, such as 2D/3D perovskite, vertical and lateral 2D heterostructures, with a high-quality interface and tunable band alignments. Surface chemical modifications can stabilize metastable forms of halide perovskite polymorphs and unstable 2D perovskites. Various structural characterization and time-resolved spectroscopic methods have been employed to collaboratively study the carrier transfer mechanisms between these well-defined heterostructures of 2D and 3D perovskites. These diverse families of perovskite materials and their nanostructures and heterostructures can enable high-performance solar cells, lasers, LEDs, and spintronic applications.
BIOSKETCH
Song Jin received his BS in chemistry from Peking University in 1997 and his Ph.D. in 2002 from Cornell University under the direction of Prof. Francis J. DiSalvo and carried out his postdoctoral research under the direction of Prof. Charles M. Lieber at Harvard University. Dr. Jin is interested in the chemistry, physics and technological applications of nanoscale and solid-state materials. Dr. Jin developed the innovative synthesis of a variety of nanomaterials including metal chalcogenides, silicides, and halide perovskites, and discovered and developed the screw dislocation-driven growth of nanomaterials. Building on the fundamental understanding of novel physical properties, Jin advances the exploitation of (nano)materials for electrocatalysis, solar energy conversion, energy storage, optoelectronics, nanospintronics, and biotechnology. Dr. Jin has authored or co-authored over 250 publications and 9 patents. He has been recognized with an NSF CAREER Award, a Research Corporation Cottrell Scholar Award and as one of the world’s top 35 innovators under the age of 35 (TR35 Award) by the MIT Technology Review Magazine, the ACS ExxonMobil Solid State Chemistry Fellowship, the Alfred P. Sloan Research Fellowship, and the ACS Inorganic Nanoscience Award. He received the Vilas Associate Award, H. I. Romnes Faculty Fellowship and WARF Named Professorship at the University of Wisconsin-Madison. He also serves as a Senior Editor for ACS Energy Letters.