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journal article·2023-09Open access

Coordination Chemistry as a Universal Strategy for a Controlled Perovskite Crystallization

Weiwei Zuo, Mahdi Malekshahi Byranvand, Tim Kodalle, Mohammadreza Zohdi, Jaekeun Lim, Brian Carlsen, Theresa Magorian Friedlmeier, Małgorzata Kot, Chittaranjan Das, Jan Ingo Flege, Wansheng Zong, Antonio Abate, Carolin M. Sutter‐Fella, Meng Li, Michael Saliba

Advanced Materials· Volume 35· Issue 39
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Abstract

Abstract The most efficient and stable perovskite solar cells (PSCs) are made from a complex mixture of precursors. Typically, to then form a thin film, an extreme oversaturation of the perovskite precursor is initiated to trigger nucleation sites, e.g., by vacuum, an airstream, or a so‐called antisolvent. Unfortunately, most oversaturation triggers do not expel the lingering (and highly coordinating) dimethyl sulfoxide (DMSO), which is used as a precursor solvent, from the thin films; this detrimentally affects long‐term stability. In this work, (the green) dimethyl sulfide (DMS) is introduced as a novel nucleation trigger for perovskite films combining, uniquely, high coordination and high vapor pressure. This gives DMS a universal scope: DMS replaces other solvents by coordinating more strongly and removes itself once the film formation is finished. To demonstrate this novel coordination chemistry approach, MAPbI3 PSCs are processed, typically dissolved in hard‐to‐remove (and green) DMSO achieving 21.6% efficiency, among the highest reported efficiencies for this system. To confirm the universality of the strategy, DMS is tested for FAPbI3 as another composition, which shows higher efficiency of 23.5% compared to 20.9% for a device fabricated with chlorobenzene. This work provides a universal strategy to control perovskite crystallization using coordination chemistry, heralding the revival of perovskite compositions with pure DMSO.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Solid-state spectroscopy and crystallography · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute for Photovoltaics (ipv) University of Stuttgart Pfaffenwaldring 47 70569 Stuttgart Germany

Helmholtz Young Investigator Group FRONTRUNNER IEK5‐Photovoltaik Forschungszentrum Jülich 52425 Jülich Germany

Molecular Foundry Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA

Laboratory of Photomolecular Science École Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland

Zentrum für Sonnenenergie‐ und Wasserstoff‐Forschung Baden‐Württemberg (ZSW) Meitnerstrasse 1 70563 Stuttgart Germany

Applied Physics and Semiconductor Spectroscopy, Brandenburg University of Technology Cottbus‐Senftenberg Konrad‐Zuse‐Strasse 1 03046 Cottbus Germany

Organisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany

Helmholtz‐Zentrum Berlin für Materialien und Energie GmbH Hahn‐Meitner‐Platz 1 14109 Berlin Germany

Department of Chemical Materials and Production Engineering University of Naples Federico II pzz.le Vincenzo Tecchio 80 Naples 80125 Italy

Key Lab for Special Functional Materials of Ministry of Education National & Local Joint Engineering Research Center for High‐efficiency Display and Lighting Technology School of Materials Science and Engineering Collaborative Innovation Center of Nano Functional Materials and Applications Henan University Kaifeng 475004 China

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