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Proceedings Paper

High intensity photodegradation of lead halide perovskite nanocrystals
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Paper Abstract

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.

Paper Details

Date Published: 25 February 2020
PDF: 9 pages
Proc. SPIE 11302, Light-Emitting Devices, Materials, and Applications XXIV, 1130208 (25 February 2020); doi: 10.1117/12.2544170
Show Author Affiliations
Peter J. Shaw, Univ. of Southampton (United Kingdom)
Thomas M. Mercier, Univ. of Southampton (United Kingdom)
Christopher G. Bailey, Univ. of Southampton (United Kingdom)
Antonios G. Kanaras, Univ. of Southampton (United Kingdom)
Pavlos G. Lagoudakis, Univ. of Southampton (United Kingdom)
Martin D. B. Charlton, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 11302:
Light-Emitting Devices, Materials, and Applications XXIV
Jong Kyu Kim; Michael R. Krames; Martin Strassburg, Editor(s)

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