DataVXACS Energy LettersPaper
journal article·2022-01-14

Intercalating-Organic-Cation-Induced Stability Bowing in Quasi-2D Metal-Halide Perovskites

Jiyun Zhang, Stefan Langner, Jianchang Wu, Christian Kupfer, Larry Lüer, Wei Meng, Baolin Zhao, Chao Liu, Manuel Daum, Andres Osvet, Ning Li, Marcus Halik, Tobias Stubhan, Yicheng Zhao, Jens A. Hauch, Christoph J. Brabec

ACS Energy Letters· Volume 7· Issue 1
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Source abstract

Abstract

Quasi-2D metal-halide perovskites with Ruddlesden–Popper structures have shown promising stability due to the protective effects of the intercalating organic cations. However, a systematic study of the effect of intercalating organic cations on stability has rarely been reported. Here we use a high-throughput-robot platform to fabricate over 300 perovskite films and study the effect of cations and their concentrations on the thermal stability of perovskite films. We find that approximately 20–25 mol % of intercalating organic cations into MAPbI3 (nominal n = 4/5) can maximize the film stability, while higher/lower concentrations lead to inferior stability, which is termed stability bowing in analogy to band-gap bowing. A model with two competitive effects of the intercalating organic cation (better protection vs more defects) is proposed to rationalize this behavior. We anticipate this work to provide new insights into the stability of quasi-2D perovskites.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Advanced battery technologies research

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

Affiliations

Helmholtz-Institute Erlangen-Nürnberg (HI-ERN), 91058 Erlangen, Germany

Institute of Materials for Electronics and Energy Technology (i-MEET), Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058, Erlangen, Germany

Organic Materials and Devices, Institute of Polymer Materials, Department of Materials Science, Friedrich-Alexander-Universität Erlangen- Nürnberg (FAU), 91058 Erlangen, Germany

SCIPRIOS GmbH, 90429, Nuremberg, Germany

Funding

Deutsche Forschungsgemeinschaft · China Scholarship Council · Alexander von Humboldt-Stiftung · Solar Technologies go Hybrid · Sino-German Postdoc Scholarship Program · Bavarian Initiative ???Solar Technologies go Hybrid??? · State of Bavaria

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