SKM 2021 – scientific programme

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SYSD: Symposium SKM Dissertation Prize 2021

SYSD 1: Presentations of the Finalists for the 2021 SKM Dissertation Prize

SYSD 1.2: Invited Talk

Monday, September 27, 2021, 10:25–10:50, Audimax 2

Co-evaporated Hybrid Metal-Halide Perovskite Thin-Films for Optoelectronic Applications — •Juliane Borchert — Cavendish Laboratory, University of Cambridge — AMOLF Institut, Amsterdam — Clarendon Laboratory, University of Oxford

Perovskite materials are a highly promising material class for the realisation of the next generation of thin, lightweight, bendable solar cells. Here I focus on co-evaporation of perovskites which is a versatile method to deposit thin films. Co-evaporated films are exceptionally smooth and uniform and, due to the additive nature of the technique, can be deposited onto solvent-sensitive substrates. This is crucial for the fabrication of flexible substrates or when building a multi-layer stack for tandem solar cells. In my dissertation research, I realised the first reported co-evaporation of formamidinium lead triiodide (FAPbI₃) solar cells which achieved high efficiencies. Subsequently, I studied the impact of impurities on the co-evaporation of methylammonium lead triiodide (MAPbI₃) and gained crucial insights to improve the process control and reproducibility of the co-evaporation of perovskite thin films. Finally, the experience and knowledge gained from these two studies were combined to fabricate co-evaporated patterned FAPbI₃ thin films for applications in semi-transparent solar cells and micro-lasers. These results are important contributions towards the deeper understanding of organic-inorganic halide perovskites and their properties as well as towards the development of stable, efficient, large-scale perovskites solar cells.