CINE WEBINAR: "Strategies for Efficient Inverted Architecture Perovskite Solar Cells"

CINE WEBINAR: "Strategies for Efficient Inverted Architecture Perovskite Solar Cells"

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Abstract

In recent years, remarkable progress has been made in the field of solution-processed perovskite solar cells, resulting in power conversion efficiencies (PCE) of >25%. These high efficiencies are demonstrated for devices in a standard architecture, in which a perovskite layer is deposited on top of an electron transport layer (ETL) and capped with a hole transport layer (HTL). Despite significant interest in the development of inverted architecture solar cells, in which the order of extraction layers is reversed, their efficiency remains below that of devices made in the standard structure. In this talk, I will introduce three strategies for the fabrication of efficient perovskite solar cells in an inverted architecture. First, I will describe how controlling the rate of antisolvent deposition allows for the fabrication of efficient perovskite solar cells from any antisolvent.[1] Next, I will show that changing the antisolvent deposition method increases the device performance by better preserving the intended perovskite stoichiometry.[2] Finally, I will present a novel dual modification approach that simultaneously increases all the device photovoltaic parameters, leading to a maximum power conversion efficiency of 23.7%.[3] 

[1] A General Approach to High Efficiency Perovskite Solar Cells by Any Antisolvent”, A. D Taylor, Q. Sun, K. P. Goetz, Q. An, T. Schramm, Y. Hofstetter, M. Litterst, F. Paulus, Y. Vaynzof, Nature Communications, 12, 1878 (2021).

[2] “Preserving the Stoichiometry of Triple-Cation Perovskites by Carrier-Gas-Free Antisolvent Spraying”, O. Telschow, M. Albaladejo-Siguan, L. Merten, A. D. Taylor, K. P. Goetz, T. Schramm, O. V. Konovalov, M. Jankowski, A. Hinderhofer, F. Paulus, F. Schreiber and Y. Vaynzof, submitted.

[3] 23.7% Efficient Inverted Perovskite Solar Cells by Dual Interfacial Modification, M. Degani, Q. An, M. Albaladejo-Siguan, Y. J. Hofstetter, C. Cho, F. Paulus, G. Grancini and Y. Vaynzof, Science Advances, in press (2021).

Speaker


Prof. Dr. Yana Vaynzof

Technische Universität Dresden


Prof. Dr. Yana Vaynzof is the Chair for Emerging Electronic Technologies at the Technical University of Dresden (Germany). 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). Prior to commencing her current position in 2019, Yana was a postdoctoral research associate at the Cavendish Laboratory, University of Cambridge (UK) and an assistant professor at Heidelberg University (Germany). Yana Vaynzof is the recipient of a number of fellowships and awards, including the ERC Starting Grant, Gordon Wu Fellowship, Henry Kressel Fellowship, Fulbright-Cottrell Award and the Walter Kalkhof-Rose Memorial Prize. 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.

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