Ultrafast and Bright Quantum Emitters from the Cavity Coupled Single Perovskite Nanocrystals

Perovskite nanocrystals (NCs) have attracted increasing interest for the realization of single-photon emitters, owing to their ease of chemical synthesis, wide spectral tunability, fast recombination rate, scalability, and high quantum yield. However, the integration of a single perovskite NC into a...

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Bibliographic Details
Published inarXiv.org
Main Authors Seongmoon Jun, Kim, Joonyun, Choi, Minho, Kim, Byungsu, Park, Jinu, Kim, Daehan, Shin, Byungha, Yong-Hoon, Cho
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 06.04.2023
Subjects
Bragg gratings
Brightness
Chemical synthesis
Emission analysis
Emitters
Far fields
Nanocrystals
Perovskites
Photon emission
Photons
Spectral emittance
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Summary:Perovskite nanocrystals (NCs) have attracted increasing interest for the realization of single-photon emitters, owing to their ease of chemical synthesis, wide spectral tunability, fast recombination rate, scalability, and high quantum yield. However, the integration of a single perovskite NC into a photonic structure is yet to be accomplished. We successfully coupled a highly stable individual zwitterionic ligand-based CsPbBr3 perovskite NC with a circular Bragg grating (CBG). The far-field radiation pattern of the NC inside the CBG exhibits high directionality toward a low azimuthal angle, which is consistent with the simulation results. We observed a 5.4-fold enhancement in brightness due to an increase in collection efficiency. Moreover, we achieved a 1.95-fold increase in the recombination rate. This study offers ultrafast (< 100 ps) single-photon emission and an improved brightness of perovskite NCs, which are critical factors for practical quantum optical applications.
ISSN:2331-8422