Resonant energy transfer properties of perovskite nanocrystals

Peter J. Shaw, Christopher G. Bailey, Giacomo Piana, Thomas M. Mercier, Antonios G. Kanaras, Pavlos G. Lagoudakis, Martin D.B. Charlton

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Perovskite nanocrystals of the form FAPbBr3 display significant promise in the field of optoelectronics. In particular, these nanocrystals could bridge the 'green gap' of LED technology, and also serve to down-convert ultraviolet light for harvesting using silicon-based photovoltaic cells. To remain competitive with traditional devices, optimising the energy transfer between the nanocrystal and the device is crucial, however very little investigation has been performed into this subject. Here, we characterise the energy transfer dynamics of FAPbBr3 nanocrystals on a silicon substrate using time resolved photoluminescence. We also use deposited 'spacer layers' to vary the displacement of the nanocrystals from the silicon in order to observe the effect on the energy-transfer dynamics. We find that the overall photo luminescent lifetime increases when reducing the distance between between the nanocrystals and the silicon layer, which runs counter to the expected behaviour. This suggests that the presence of an optically-active substrate suppresses photo luminescent lifetime and, further, suggests that nanocrystal-to-nanocrystal transfer is highly efficient.

Original languageEnglish
Title of host publicationQuantum Dots, Nanostructures, and Quantum Materials
Subtitle of host publicationGrowth, Characterization, and Modeling XVII
EditorsDiana L. Huffaker, Holger Eisele
PublisherSPIE
ISBN (Electronic)9781510633452
DOIs
Publication statusPublished - 2020
Externally publishedYes
EventQuantum Dots, Nanostructures, and Quantum Materials: Growth, Characterization, and Modeling XVII 2020 - San Francisco, United States
Duration: 5 Feb 2020 → …

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11291
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceQuantum Dots, Nanostructures, and Quantum Materials: Growth, Characterization, and Modeling XVII 2020
Country/TerritoryUnited States
CitySan Francisco
Period5/02/20 → …

Keywords

  • Down-shifting
  • Nanocrystals
  • Perovskite
  • PVs
  • Resonant energy transfer

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