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Semiconductors

, Volume 53, Issue 6, pp 814–818 | Cite as

Optically Induced Charge Exchange in ZnO-Based Composite Structures with Embedded CsPbBr3 Nanocrystals

  • K. A. Drozdov
  • I. V. Krylov
  • A. S. Chizhov
  • M. N. Rumyantseva
  • L. I. Ryabova
  • D. R. KhokhlovEmail author
MICROCRYSTALLINE, NANOCRYSTALLINE, POROUS, AND COMPOSITE SEMICONDUCTORS
  • 3 Downloads

Abstract

The introduction of CsPbBr3 nanocrystals into a porous ZnO matrix leads to the appearance of a photoconductivity response in the visible spectral range. Measurement of the spectral dependences of the absorption, photoluminescence (PL), and photoconductivity showed that the shape and position of the PL peak are associated with defects in CsPbBr3. Analysis of the photoconductivity relaxation kinetics shows the possibility of accelerating the recombination of photoexcited charge carriers by more than an order of magnitude. The mechanisms responsible for this effect are discussed.

Notes

FUNDING

This study was supported by the Russian Scientific Foundation, project no. 16-12-10071. The synthesis of CsPbBr3 nanocrystals was supported by the Russian Foundation for Basic Research, project no. 18-33-01004.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • K. A. Drozdov
    • 1
  • I. V. Krylov
    • 1
  • A. S. Chizhov
    • 2
  • M. N. Rumyantseva
    • 2
  • L. I. Ryabova
    • 2
  • D. R. Khokhlov
    • 1
    Email author
  1. 1.Department of Physics Moscow State UniversityMoscowRussia
  2. 2.Department of Chemistry Moscow State UniversityMoscowRussia

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