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"text": "<!-- image -->\n\nRESEARCH ARTICLE | NOVEMBER 22 2023\n\n## Tuning perovskite nanocrystal superlattices for superradiance in the presence of disorder\n\nSpecial Collection: 2023 JCP Emerging Investigators Special Collection\n\nT. P. Tan Nguyen\n\n; Dmitry Baranov\n\n\ue923\n\n<!-- image -->\n\nCheck for updates\n\nJ. Chem. Phys. 159, 204703 (2023)\n\nhttps://doi.org/10.1063/5.0167542\n\n\ue918 CHORUS\n\n## Articles You May Be Interested In\n\nTheory of high-temperature superfluorescence in hybrid perovskite thin films\n\n- J. Chem. Phys. (September 2024)\n\nElectromagnetic enhancement spectra of one-dimensional plasmonic hotspots along silver nanowire dimer derived via surface-enhanced fluorescence\n\n- J. Chem. Phys. (January 2024)\n\nShape-dependent oxidation rates of nano-structured silver particles\n\n- J. Chem. Phys. (September 2024)\n\n## Webinar From Noise to Knowledge\n\n13th Register now May\n\n<!-- image -->\n\nInstruments\n\nUniversit\u00e4t Konstanz\n\n<!-- image -->\n\n\ue929 \ue92d\n\n<!-- image -->\n\n<!-- image -->\n\n<!-- image -->\n\n<!-- image -->\n\n## Tuning perovskite nanocrystal superlattices for superradiance in the presence of disorder\n\n<!-- image -->\n\n<!-- image -->\n\n## AFFILIATIONS\n\n- 1 M2I Formation, Sophia Antipolis, Mougins 06250, France\n- 2 Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA\n- 3 Division of Chemical Physics, Department of Chemistry, Lund University, P.O. Box, 124, SE-221 00 Lund, Sweden\n\nNote: This paper is part of the 2023 JCP Emerging Investigators Special Collection.\n\n- a) Authors to whom correspondence should be addressed: phuctan3108@gmail.com and dmitry.baranov@chemphys.lu.se\n\n## ABSTRACT\n\nThe cooperative emission of interacting nanocrystals is an exciting topic fueled by recent reports of superfluorescence and superradiance in assemblies of perovskite nanocubes. Several studies estimated that coherent coupling is localized to a small fraction of nanocrystals ( 10 -7 -10 -3 ) within the assembly, raising questions about the origins of localization and ways to overcome it. In this work, we examine singleexcitation superradiance by calculating radiative decays and the distribution of superradiant wave function in two-dimensional CsPbBr3 nanocube superlattices. The calculations reveal that the energy disorder caused by size distribution and large interparticle separations reduces radiative coupling and leads to the excitation localization, with the energy disorder being the dominant factor. The single-excitation model clearly predicts that, in the pursuit of cooperative effects, having identical nanocubes in the superlattice is more important than achieving a perfect spatial order. The monolayers of large CsPbBr3 nanocubes (LNC = 10-20 nm) are proposed as model systems for experimental tests of superradiance under conditions of non-negligible size dispersion, while small nanocubes (LNC = 5-10 nm) are preferred for realizing the Dicke state under ideal conditions.\n\n- \u00a9 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). https://doi.org/10.1063/5.0167542\n\n## I. INTRODUCTION\n\nThe optical properties of self-assembled colloidal nanocrystals are of fundamental and practical interest. The reports of superfluorescence 1-6 and superradiance 7-9 in ordered assemblies (superlattices) of perovskite nanocrystals are recent examples of collective optical effects. Combining such phenomena with scalable self-assembly 10 may lead to the low-cost fabrication of miniature coherent light sources for photonics and optical information processing. These systems form a rich playground where the material properties of constituent nanocrystals and the superstructure could be designed to control the cooperative light emission.\n\nconditions. 13,14 Semiconductor nanocrystals, resembling 'artificial atoms,' are interesting as quantum emitters with facile tunability of emission frequency by chan
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