Yana Vaynzof

Metal Halide Perovskites – Photovoltaics and Beyond

TU Dresden, Germany

Abstract:

In recent years, remarkable progress has been made in the field of perovskite solar cells, resulting in power conversion efficiencies (PCE) that surpass 26%. The vast majority of research efforts are dedicated to their processing from solution, yet metal halide perovskites can also be deposited by vapor deposition and other solvent-free, scalable methods. In the first part of this talk, I will discuss the importance of understanding the solvent-antisolvent interactions for solution processing of metal halide perovskites demonstrating not only how they impact the efficiency and stability of the devices,[1,2] but also proposing a strategy for selecting green solvents that enable a more sustainable processing on a large scale.[3] In the second half of the talk, I will introduce a range of applications in which the utilization of vapor deposited perovskites offers clear advantages to their processing from solution.[4,5] For example, I will introduce a new concept for photovoltaic devices that exploits the polymorphism of perovskite materials to form a phase heterojunction solar cell.[6] I will also introduce an outlook to utilizing vapor deposited perovskites in applications beyond photovoltaics.[7]

[1] A. D. Taylor et al., Nature Communications 2021, 12, 1878.
[2] M. Degani et al., Science Advances 2021, 7, eabj7930.
[3] J. R. Bautista-Quijano et al., Chemical Communications 2023, 59, 10588-10603.
[4] Z. Zhang et al., Advanced Energy Materials 2021, 11 (29), 2100299.
[5] Z. Zhang et al., Advanced Functional Materials 2024, Early View.
[6] R. Ji et al. Nature Energy 2022, 7, 1170.
[7] T. Schramm et al., Advanced Materials 2024, Early View.

Short Bio:
Prof. Dr. Yana Vaynzof is the Chair for Emerging Electronic Technologies at the Technical University of Dresden (Germany) and a Director at the Leibniz Institute for Solid State and Materials Research Dresden. She received a B.Sc. in Electrical Engineering from the Technion – Israel Institute of Technology (Israel) in 2006 and a M. Sc. In Electrical Engineering from Princeton University (USA) in 2008. In 2011, she received a Ph.D. in Physics from the University of Cambridge (UK). Yana was a postdoctoral research associate at the Cavendish Laboratory, University of Cambridge (UK) and an assistant professor at Heidelberg University (Germany) from 2014 to 2019. Yana Vaynzof is the recipient of a number of fellowships and awards, including the ERC Starting Grant, ERC Consolidator Grant, Gordon Wu Fellowship, Henry Kressel Fellowship, Fulbright-Cottrell Award and the Walter Kalkhof-Rose Memorial Prize. She is a Fellow of the Royal Society of Chemistry and the winner of the Energy & Environmental Science Lectureship Award. Her research interests lie in the field of emerging photovoltaics focusing on the study of material and device physics of organic, quantum dot and perovskite solar cells by integrating device fabrication and characterisation with the application and development of advanced spectroscopic methods.