Harnessing Self‐Sensitized Scintillation by Supramolecular Engineering of CsPbBr <sub>3</sub> Nanocrystals in Dense Mesoporous Template Nanospheres
Perovskite-based nanoscintillators, such as CsPbBr<sub>3</sub> nanocrystals (NCs), are emerging as promising candidates for ionizing radiation detection, thanks to their high emission efficiency, rapid response, and facile synthesis. However, their nanoscale dimensions - smaller than the mean free path of secondary carriers - and relatively low emitter density per unit volume, limited by their high molecular weight and reabsorption losses, restrict efficient secondary carrier conversion and hamper their practical deployment. In this work, a strategy is introduced to enhance scintillation performance by organizing NCs into densely packed domains within porous SiO<sub>2</sub> mesospheres (MSNs). This engineered architecture achieves up to a 40-fold increase in radioluminescence intensity compared to colloidal NCs, driven by improved retention and conversion of secondary charges, as corroborated by electron release measurements. This approach offers a promising pathway toward developing next-generation nanoscintillators with enhanced performance, with potential applications in high-energy physics, medical imaging, and space technologies.
Authors
- Francesco Carulli (ORCID: https://orcid.org/0000-0002-8345-6606)
- Saptarshi Chakraborty (ORCID: https://orcid.org/0000-0001-8559-1089)
- Francesco Bruni (ORCID: https://orcid.org/0000-0003-0303-2916)
- Francesca Rossi (ORCID: https://orcid.org/0000-0003-1773-2542)
- Matteo L. Zaffalon (ORCID: https://orcid.org/0000-0002-1016-6413)
- Eugene P. Mazzola (ORCID: https://orcid.org/0009-0000-7231-893X)
- Liang Li (ORCID: https://orcid.org/0000-0003-3898-0641)
- Mengda He (ORCID: https://orcid.org/0000-0002-1971-8034)
- Francesco Meinardi (ORCID: https://orcid.org/0000-0002-6711-5211)
- C. Wang (ORCID: https://orcid.org/0000-0001-5826-4453)
- L. Gironi (ORCID: https://orcid.org/0000-0003-2019-0967)
- Sergio Brovelli (ORCID: https://orcid.org/0000-0002-5993-855X)
- Andrea Fratelli (ORCID: https://orcid.org/0009-0007-5239-977X)
- Xiaohe Zhou (ORCID: https://orcid.org/0000-0001-8995-7025)
- Leonardo Poletti (ORCID: https://orcid.org/0009-0002-8542-8737)
Institutions
- Macau University of Science and Technology (MO)
- Shanghai Jiao Tong University (CN)
- University of Macau (MO)
- Institute of Materials for Electronics and Magnetism (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca (IT)
- University of Milano-Bicocca (IT)
Publication Details
- Journal
- Advanced Materials
- Published
- 2025-10-15
- DOI
- https://doi.org/10.1002/adma.202513469
- Citations
- 4
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.92
Funders
- European Commission
- Agenzia Spaziale Italiana
- HORIZON EUROPE Framework Programme