Aqueous preparation of CsPbBr₃ perovskite nanocrystals under ambient conditions
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Published online version
Author(s)
Type
Journal Article
Abstract
Metal halide perovskites (MHPs) have had a profound impact on numerous emerging optoelectronic technologies, achieving performance metrics that rival or exceed incumbent materials. This impact is underpinned by the exceptional properties of MHPs, including tuneable band gaps, high absorption coefficients, long carrier diffusion lengths and combined with uncomplicated synthesis methods. However, current MHP production relies on toxic solvents, which pose significant environmental and health risks. Moreover, these methods often require complex multi component solvent systems and thermal processing to achieve the desired material phases, further hindering scalability and sustainability. Overcoming these challenges is critical to the future development of MHP-based technologies. Here, we present a novel water-based solvent system and synthetic approach for the preparation of size-controlled CsPbBr3 perovskite nanocrystals in ambient air and at room temperature, with a maximum photoluminescence quantum yield (PLQY) that exceeds 60%. To demonstrate the light to current conversion ability of our PNCs a series of photoconductors were prepared, with the best performing devices achieving a specific detectivity (D*) of 1.2 × 1011 Jones. Thus, this green, scalable, and low-cost approach offers a sustainable pathway for precise size and compositional control of MHP nanocrystals, opening new possibilities for environmentally friendly optoelectronic applications.
Date Issued
2026-07-23
Date Acceptance
2026-06-30
Citation
Energy and Environmental Science, 2026
ISSN
1754-5692
Publisher
Royal Society of Chemistry
Journal / Book Title
Energy and Environmental Science
Copyright Statement
© 2026 The Author(s). Published by the Royal Society of Chemistry This article is licensed under a Creative Commons Attribution-Non Commercial 4.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.
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Publication Status
Published online
Date Publish Online
2026-07-23