Title:
When Like meets Unlike: Electronic Structure and Dynamics at Interfaces
Abstract(s):
Molecular interfaces play a dominant role in much of Chemistry, and are of vital importance in diverse applications such as sensing, catalysis and electron transfer. Yet the mere fact of coupling two fundamentally different materials, e.g. a molecular solid with an inorganic substrate, makes interfaces typically difficult to understand, and robust means to tailor electronic structure and dynamics at interfaces are still missing. Yet, a fundamental understanding of interfaces may offer insights into how to inject or extract charges, spin or energy in optoelectronic devices.
I will highlight recent efforts in LabMonti aimed at developing such an understanding, focusing in particular on the different spectroscopic approaches necessary to observe both the electronic structure and attosecond to femtosecond carrier and spin dynamics at interfaces. I will show how organic semiconductors provide a powerful means to manipulate interfacial electronic structure, with applications in 2D materials, spintronics and for hybrid organic/inorganic optoelectronics.
Speaker Bio(s):
Dr. Oliver Monti is an associate professor with the Department of Physics and the Department of Chemistry and Biochemistry at the University of Arizona. Dr. Monti’s research focuses on the fundamental investigation of electronic structure and charge transfer and transport in excitonic semiconductors for novel power conversion and low power optoelectronic devices, with particular emphasis on 2D materials and organic semiconductors. His group develops and implements state-of-the-art techniques combining time- and angle-resolved photoemission spectroscopy, scanning tunneling microscopy, advanced core electron spectroscopies and single molecule transport measurements.