Seminar & Colloquium
[세미나: 3월 22일(금), 오후 4시] Prof. David B. Mitzi, Duke University
Title
Organic-Inorganic Perovskites: A Perspective on Tailoring Hybrid Semiconductors for PV and Beyond
Speaker
Prof. David B. Mitzi, Duke University
* Education
- 1985 B.S.E, Electrical Eng./Eng. Physics, Princeton University
- 1990 Ph.D., Applied Physics, Stanford University
* Experience
- 2014. 7. ~ present Simon Family Professor, Depts. of Mechanical Eng. and Materials Science, and Chemistry, Duke University
- 2009. 6. ~ 2014. 6. Manager, Photovoltaic Science and Technology, IBM T. J. Watson Research Center
- 1990. 10. ~ 2009. 5. Research Staff Member, IBM T. J. Watson Research Center
| Date | Friday March 22nd , 2024
| Time | 16:00 ~
| Venue | 33동 228호
[Abstract]
Although known for many years, organic-inorganic perovskites and related metal halide-based hybrids have received extraordinary attention recently, due to uniquely diverse chemical components and physical properties, which make them outstanding candidates for applications in photovoltaic and other semiconductor devices. Perovskite structures consist of networks of corner-sharing metal halide octahedra that extend in three or fewer dimensions, providing opportunity to probe how dimensionality of the inorganic framework impacts semiconducting character. Incorporation of more complex organic cations enables combining outstanding inorganic-derived semiconducting character with organic-derived properties (e.g., energy level offset, luminescence, chirality, processibility), well-beyond what is attainable with established high-performance inorganic semiconductors (e.g., Si or GaAs). This talk will provide a brief historical perspective and introduction to halide perovskites, emphasizing chemical/structural versatility and organic-inorganic synergy. Examples of contemporary topics to be covered include self-assembly/engineering of multilayer hybrid quantum well structures, organic-cation-templated formation of difficult-to-realize structural paradigms, tailored reduced crystallographic symmetry (e.g., to induce spin splitting), and control over hybrid melting temperature for solvent-free film preparation and glass-crystal switching. Outstanding functionality and versatile processing provide two pillars for future energy, optoelectronic or spintronic application of this exciting materials family.
| Host | 강기훈 교수(02-880-7189)