Exciton-plasmon interactions in superlattices of CsPbBr3 nanocrystals and Au nanoparticles

Aliki Souzou^a, Mariia Svyrydenko^b^,^c, Kyriacos Georgiou^d, Paris Papagiorgis^a, Chenglian Zhu^b^,^c, Maryna Bodnarchuk^b^,^c, Maksym Kovalenko^b^,^c, Grigorios Itskos^a

^aExperimental Condensed Matter Physics Laboratory Department of Physics, University of Cyprus, Nicosia 1678, Cyprus

^bLaboratory for Thin Films and Photovoltaics Empa-Swiss Federal Laboratories for Materials Science and Technology Dübendorf CH-8600, Switzerland

^cInstitute of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, CH-8093, Zürich, Switzerland

^dLaboratory of Ultrafast Science, Department of Physics, University of Cyprus, Nicosia 1678, Cyprus

Proceedings of MATSUS Spring 2026 Conference (MATSUSSpring26)

H2 Halide perovskites for quantum technologies

Barcelona, Spain, 2026 March 23rd - 27th

Organizers: Quinten Akkerman, Simon Boehme and Maksym Kovalenko

Oral, Aliki Souzou, presentation 369
Publication date: 15th December 2025

The assembly of monodisperse nanocrystals (NCs) into long-range ordered superlattices (SLs) provides a platform for engineering materials with programmable and distinct optoelectronic properties compared to those of the constituent building blocks [1]. SLs that integrate NCs of different materials can unite the different functionalities and generate new light-matter interactions [2], expanding the potential for integration into the next-generation optoelectronic devices. This work studies the novel collective optical properties in binary SLs comprising of cubic CsPbBr₃ NCs co-assembled with spherical Au nanoparticles (NPs). The study reveals modifications in the absorption and photoluminescence spectra of the binary SLs with reference to the respective single-component CsPbBr₃ SLs, attributed to electronic interactions between the nanocrystal excitons and the localized surface plasmons. The dependency of the collective optical properties to the size of the nanocrystal building blocks and the perovskite – plasmonic intercomponent distance is also presented.

References:

[1] Rainò G., Becker M.A., Bodnarchuk M.I., Mahrt R.F., Kovalenko M.V., Stöferle T. Superfluorescence from lead halide perovskite quantum dot superlattices. Nature 563 (2018)

[2] Redl, F. X., Cho, K. S., Murray, C. B. & O’Brien, S. Three-dimensional binary superlattices of magnetic nanocrystals and semiconductor quantum dots. Nature 423, 968–971 (2003)

nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.

MATSUS

Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.

International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics

The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.

International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics

The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.