Title: The Chemical Design Principles of Goniopolar Crystals
Abstract:
Electronic materials generally exhibit a single majority carrier type, either electrons or holes, uniformly along all directions of the crystal. Then, these n-type and p-type materials are integrated together to create virtually all modern electronic devices. However, most solid-state materials have anisotropic bonding features, making it possible to create materials that simultaneously exhibit either n-type or p-type conduction along different crystallographic directions, a phenomenon we refer to as “goniopolarity.” Here, we will establish the origin of this unique effect, and describe the chemical and electronic principles for designing new goniopolar materials. This understanding has allowed us to rapidly expand the number of solid-state compounds to experimentally exhibit this phenomenon. Finally, we will show how the unique charge separation in goniopolar materials can be utilized to create new efficient energy-harvesting and electronic technologies.
Bio:
Josh Goldberger received his B.S. in chemistry from The Ohio State University in 2001. He received his Ph.D. in chemistry from the University of California at Berkeley with Professor Peidong Yang in 2006, as an NSF graduate fellow. He then did his postdoctoral research with Professor Sam Stupp at Northwestern University as part of the Institute for BioNanotechnology in Medicine, as an NIH-NRSA postdoctoral fellow (2007-2010). He joined The Ohio State University Chemistry and Biochemistry Department in August of 2010, and was promoted to Associate Professor in 2016, Professor in 2020, and the Charles H. Kimberly Professor in 2022. He has received many awards, including an MRS Graduate Student Finalist Award in 2003, an IUPAC Prize for Young Chemists in 2007, a Camille Dreyfus Teacher-Scholar Award in 2015, a Lumley Interdisciplinary Research Award in 2019, and an ASC Mid-Career Excellence Award in 2020. He was elected to the AAAS in 2022, and received a Friedrich Wilhelm Bessel Award from the Humboldt foundation in 2022. In 2023, he became the director of the Center for Emergent Materials, an NSF MRSEC center. He is a co-founder of Goniotech LLC.