Enhanced Photoluminescence of Halide Perovskite Nanocrystals Mediated by a Higher-Order Topological Metasurface

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Alexander S. Berestennikov
  • Anton Vakulenko
  • Svetlana Kiriushechkina
  • Mengyao Li
  • Lev E. Zelenkov
  • Anatoly P. Pushkarev
  • Maxim A. Gorlach
  • Sergey V. Makarov
  • Alexander B. Khanikaev

Detail(s)

Original languageEnglish
Pages (from-to)9884-9890
Journal / PublicationJournal of Physical Chemistry C
Volume125
Issue number18
Online published26 Apr 2021
Publication statusPublished - 13 May 2021

Abstract

Halide perovskite nanocrystals are a family of nanomaterials with a high prospect for use in light-emitting devices, lasers, and quantum optics, which makes their integration into photonic circuits highly desirable. On the other hand, recently discovered higher-order topological insulators offer rich potential for disorder-robust light confinement due to topological protection over an extended range of dimensionalities. Here, we demonstrate coupling of halide perovskite nanocrystals to higher-order zero-dimensional states confined to the corners of a topological metasurface. Namely, we integrate a silicon-based kagome lattice supporting various topologically protected states with a layer of perovskite nanocrystals with the emission wavelength precisely tuned to the required wavelength via anion exchange reaction. By measuring the photoluminescence spectra of perovskite nanocrystals, we reveal a significant enhancement at the frequency of zero-dimensional topological corner states, thus highlighting the interplay of topological physics and the Purcell effect. We further support our findings by the time-resolved photoluminescence measurements.

Bibliographic Note

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Citation Format(s)

Enhanced Photoluminescence of Halide Perovskite Nanocrystals Mediated by a Higher-Order Topological Metasurface. / Berestennikov, Alexander S.; Vakulenko, Anton; Kiriushechkina, Svetlana; Li, Mengyao; Li, Yanxiu; Zelenkov, Lev E.; Pushkarev, Anatoly P.; Gorlach, Maxim A.; Rogach, Andrey L.; Makarov, Sergey V.; Khanikaev, Alexander B.

In: Journal of Physical Chemistry C, Vol. 125, No. 18, 13.05.2021, p. 9884-9890.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review