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Abstract Chalcogenide perovskites have garnered increasing attention as stable, non‐toxic alternatives to lead halide perovskites. However, their conventional synthesis at high temperatures (>1000 °C) has hindered widespread adoption. Recent studies have developed low‐to‐moderate temperature synthesis methods (<600 °C) using reactive precursors, yet a comprehensive understanding of the pivotal factors affecting reproducibility and repeatability remains elusive. This study delineates the critical factors in the low‐temperature synthesis of BaMS3(M═Zr, Hf, Ti) compounds and presents a generalized framework. Innovative approaches are developed for synthesizing BaMS3compounds using this framework involving organometallics for solution deposition. The molecular precursor routes, employing metal acetylacetonates to generate soluble metal–sulfur bonded complexes and metal–organic compounds to produce soluble metal‐thiolate, metal‐isothiocyanate, and metal‐trithiocarbonate species, are demonstrated to yield carbon‐free BaMS3. These methods have achieved the most contiguous films of BaZrS3and BaHfS3using solution deposition to date. Furthermore, a hybrid solution processing method involving stacking sputter‐deposited Zr and solution‐deposited BaS layers is employed to synthesize a contiguous, oxygen‐free BaZrS3film. The diffuse reflectance measurements indicate a direct bandgap of ≈ 1.85 eV for the BaZrS3films and ≈ 2.1 eV for the BaHfS3film under investigation.
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Solution-phase synthesis of the chalcogenide perovskite barium zirconium sulfide as colloidal nanomaterials
Chalcogenide perovskites such as BaZrS 3 have promising optoelectronic properties. Methods to produce these materials at low temperatures, especially in the solution phase, are currently scarce. We describe a solution-phase synthesis of colloidal nanoparticles of BaZrS 3 using reactive metal amide precursors. The nanomaterials are crystallographically and spectroscopically characterized.
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- Award ID(s):
- 2004421
- PAR ID:
- 10462628
- Date Published:
- Journal Name:
- Chemical Communications
- Volume:
- 58
- Issue:
- 75
- ISSN:
- 1359-7345
- Page Range / eLocation ID:
- 10512 to 10515
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.1039/D2CC03494H
