High intensity photodegradation of lead halide perovskite nanocrystals

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

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

1 Citation (Scopus)


In this work, we probe the photodegradative behaviour of CsPbBr3 perovskite nanocrystals under illumination intensities in excess of 1 W=cm2. In doing so, we uncover optical behaviours unique to this extreme form of degradation namely a pronounced period of increasing photoluminescent intensity at the outset of degradation along with a red-shifted emission lobe. We also compare the photochemical lifetimes of CsPbBr3 to the relating organic-inorganic hybrid of FAPbBr3 and show that FAPbBr3 can withstand such high intensities for approximately ten times longer than CsPbBr3. This marks out FAPbBr3 as a potential successor to CsPbBr3 in optoelectronic applications.

Original languageEnglish
Title of host publicationLight-Emitting Devices, Materials, and Applications XXIV
EditorsJong Kyu Kim, Michael R. Krames, Martin Strassburg
ISBN (Electronic)9781510633674
Publication statusPublished - 2020
Externally publishedYes
EventLight-Emitting Devices, Materials, and Applications XXIV 2020 - San Francisco, United States
Duration: 3 Feb 20206 Feb 2020

Publication series

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


ConferenceLight-Emitting Devices, Materials, and Applications XXIV 2020
Country/TerritoryUnited States
CitySan Francisco


  • Colour conversion
  • Degradation
  • High intensity
  • LEDs
  • Nanocrystals
  • Perovskite
  • Photoactivation
  • Stability


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