High-throughput in situ sizing and quantum yield determination of individual perovskite nanocrystals
Abstract Colloidal nanocrystals exhibit high tunability and low-cost solution processing attractive for next-generation electronic applications. However, colloidal nanocrystals are inherently heterogeneous and the impact of this heterogeneity on device performance has been largely disregarded, since analytical techniques cannot assess the functionality of individual nanocrystals on a large scale. Here we introduce a rapid, in situ method to determine the size and quantum yield of thousands of individual nanocrystals within minutes, based on interferometric scattering microscopy and photoluminescence imaging. Monitoring the life cycle of CsPbBr 3 perovskite nanocubes, our approach uncovers phenomena masked by bulk averaging. We find a substantial performance spread across the nanocubes and an anticorrelation of quantum yield and size. During a subsequent solution-phase defect engineering process, we uncover size-dependent enhancement kinetics, which initially favour the enhancement of smaller nanocubes. Finally, we image light-induced degradation by tracking the size reduction and photobleaching of single sub-20-nm nanocrystals, finding material loss decreases at higher laser powers due to the trapping of photoinduced electrons by the formed metallic lead.
Authors
- Stefan Alexander Maier (ORCID: https://orcid.org/0000-0001-9704-7902)
- Andrea Mancini (ORCID: https://orcid.org/0000-0001-5927-9032)
- Olivier Henrotte (ORCID: https://orcid.org/0000-0002-7512-3377)
- Y Li
- Carola Lampe (ORCID: https://orcid.org/0000-0001-7833-7306)
- Franz Gröbmeyer (ORCID: https://orcid.org/0000-0003-0815-6889)
- Emiliano Cortés (ORCID: https://orcid.org/0000-0001-8248-4165)
- Andreas Singldinger (ORCID: https://orcid.org/0000-0002-3613-6570)
- Christoph Gruber (ORCID: https://orcid.org/0000-0002-6272-0543)
- Michael F. Lichtenegger (ORCID: https://orcid.org/0000-0001-6480-4145)
- Nina A. Henke (ORCID: https://orcid.org/0009-0008-6339-8577)
- Alexander S. Urban (ORCID: https://orcid.org/0000-0001-6168-2509)
Institutions
- Center for NanoScience (DE)
- Southern University of Science and Technology (CN)
- Imperial College London (GB)
- Monash University (AU)
- Ludwig-Maximilians-Universität München (DE)
Publication Details
- Journal
- Nature Materials
- Published
- 2026-05-21
- DOI
- https://doi.org/10.1038/s41563-026-02607-5
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Solar Technologies go Hybrid
- European Commission
- Deutsche Forschungsgemeinschaft
- Bayerisches Staatsministerium für Bildung und Kultus, Wissenschaft und Kunst
- Ludwig-Maximilians-Universität München
- Horizon 2020 Framework Programme
- HORIZON EUROPE Framework Programme
- Engineering and Physical Sciences Research Council
- Center for NanoScience, Ludwig-Maximilians-Universität München