Center for Excitonics

Events

Fundamental studies and new applications of hybrid lead halide perovskites*

November 10, 2015 at 4:30pm/Duboc Room: 4-331

Riccardo Comin
University of Toronto

In recent years light-harvesting devices based on a new class of organometallic lead iodide perovskites (CH3NH3PbI3) were demonstrated to exhibit power conversion efficiencies beyond 20%, rapidly approaching the performance of commercial silicon-based modules. Besides photovoltaics, important milestones and breakthroughs were also achieved in other optoelectronic contexts, such as light emission, lasing, light sensing, and photocatalysis.

In this talk I will first discuss a series of fundamental studies of single-crystalline perovskite materials, including investigations of their electronic structure, carrier dynamics, and photophysical properties. I will then present some recent developments of innovative perovskite-based composite materials and hierarchical structures, and show how they can be tailored and functionalized for specific optoelectronic applications, and in particular for light emission technologies

Riccardo Comin received his PhD degree from the University of British Columbia in 2013 under the supervision of Prof. Andrea Damascelli.  He has investigated and discovered new electronic properties of several oxide-based quantum materials (cuprates, ruthenates, iridates), using a variety of techniques, in primis angle-resolved photoemission and various type of x-ray spectroscopies.  He is currently a NSERC post-doctoral fellow in the the Sargent group at the University of Toronto exploring the link between the fundamental electronic properties and the functionality of novel organometallic halide perovskites for photovoltaic applications.

*This talk is part of the Perovskites Seminar Series organized by Sam Stranks and sponsored by the Center for Excitonics. For more info contact Sam: stranks@mit.edu