Strong Coupling in Bulk Nanoplasmonic Nanoplatelet Perovskite Scintillators

Strong Coupling in Bulk Nanoplasmonic Nanoplatelet Perovskite Scintillators | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Strong Coupling in Bulk Nanoplasmonic Nanoplatelet Perovskite Scintillators Michal Makowski, Dominik Kowal, Anna Pniakowska, Kamil Misztal, and 10 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8327061/v2 This work is licensed under a CC BY 4.0 License Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Abstract Control of light emission in solids underpins modern photonics, quantum technologies, and radiation detection. Strong coupling between excitons and confined electromagnetic modes forms hybrid light–matter states known as polaritons, enabling new regimes of emission control. To date, such effects have been largely restricted to nanoscale or ultrathin architectures and mostly reported under optical or electrical excitations, limiting their relevance for bulk scintillator applications. Here, macroscopic exciton–plasmon strong coupling is demonstrated in bulk nanocomposite scintillators based on lead-halide perovskite nanoplatelets coupled with silver nanocubes. Precise resonance alignment between excitonic and plasmonic modes is achieved through nanocube size engineering and temperature tuning, resulting in pronounced Rabi splitting and clear mode anticrossing. The extracted coupling strength exceeds both excitonic and plasmonic dissipation rates, confirming operation well within the strong-coupling regime. Angular-resolved photoluminescence measurements directly reveal polaritonic dispersion, providing unambiguous evidence of hybrid mode formation. Strong coupling is realized in a bulk scintillating composite, demonstrating that polaritonic hybridization can be implemented directly in materials designed for ionizing radiation detection. These results establish a scalable route to polaritonic scintillators in which light yield and temporal response can be engineered through controlled light–matter hybridization, opening opportunities for next-generation radiation detectors and medical imaging technologies. Physical sciences/Optics and photonics/Optical materials and structures/Nanoparticles Physical sciences/Optics and photonics/Optical physics/Nanophotonics and plasmonics Physical sciences/Physics/Optical physics/Nanophotonics and plasmonics Physical sciences/Optics and photonics/Optical materials and structures/Nanocavities strong coupling scintillators nanoplatelets Full Text Additional Declarations The authors declare no competing interests. Supplementary Files supporting.pdf Supporting Information for Strong Coupling in Bulk Nanoplasmonic Nanoplatelet Perovskite Scintillators Cite Share Download PDF Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-8327061","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":561624332,"identity":"d6440948-72d8-4d10-92b4-87756a1aa608","order_by":0,"name":"Michal Makowski","email":"data:image/png;base64,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","orcid":"https://orcid.org/0000-0001-7758-2326","institution":"Łukasiewicz Research Network - 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