Past Seminars and Events 2017
Nanostructured materials are promising platforms for a wide variety of applications. For example, nanoparticle solar cells were shown to exhibit multiple exciton generation (MEG), a process that could increase the efficiency of solar cells beyond 33%, the Shockley-Queisser limit. Understanding the physical principles of these materials, including MEG, charge transport, and electronic excitations, is challenging as they are heterogeneous by their very nature, with interfaces and defects playing a key role in determining their electronic and transport properties. Hence structural models at the atomistic scale are necessary in order to predict and eventually design nanostructured materials. I will show how theoretical and computational methods based on density functional and many body perturbation theory enable predictive design of nanostructured materials with tailored properties. In particular, I will discuss how MEG can be enhanced in exotic phase nanoparticles, and how interfacial structural defects influence charge transport and non-radiative recombination and what strategies could be used to lessen the impact of defects.
Marton Voros - https://www.linkedin.com/in/marton-voros-81a9b058