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Title: Color-tunable mixed-cation perovskite single photon emitters
Authors: D’Amato, Marianna
Tan, Qi Ying
Glorieux, Quentin
Bramati, Alberto
Soci, Cesare
Keywords: Science::Physics
Issue Date: 2023
Source: D’Amato, M., Tan, Q. Y., Glorieux, Q., Bramati, A. & Soci, C. (2023). Color-tunable mixed-cation perovskite single photon emitters. ACS Photonics, 10(1), 197-205.
Project: A18A7b0058 
Journal: ACS Photonics 
Abstract: Quantum photonics technologies, like wavelength division multiplexing (WDM), for high-rate quantum key distribution require narrowband, spectrally tunable single photon emitters. Physical methods that rely on the application of large mechanical strain to epitaxial quantum dots or electric and magnetic fields to color centers in 2D metal dichalcogenides provide limited spectral tunability. Here we adopt a chemical approach to synthesize a family of colloidal mixed-cation perovskite quantum dots (Cs1-xFAxPbBr3) that show highly photostable, compositionally tunable single photon emission at room temperature, spanning more than 30 nm in the visible wavelength spectral range. We find that tailoring the stoichiometry of the organic formamidinium (FA) cation in all-inorganic cesium lead bromide (CsPbBr3) perovskite quantum dots detunes the electronic band structure while preserving their excellent single photon emission characteristics. We argue that the mixed-cation perovskite quantum dots studied in this work offer a new platform for the realization of color-tunable single photon emitters that could be readily integrated in a diversity of quantum photonic devices.
ISSN: 2330-4022
DOI: 10.1021/acsphotonics.2c01437
DOI (Related Dataset): 10.21979/N9/DOWJDP
Schools: School of Physical and Mathematical Sciences 
Interdisciplinary Graduate School (IGS) 
Research Centres: The Photonics Institute 
Energy Research Institute @ NTU (ERI@N) 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © 2023 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles
IGS Journal Articles
SPMS Journal Articles

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